How to Easily Polish and Port a Throttle Body

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  • Опубліковано 17 жов 2013
  • Video tutorial on how to port and polish a vehicle's throttle body. In order to do this procedure, you must remove the throttle body from the engine so you can probably polish and port the throttle body and the material shavings do not enter the engine. This is a very small horsepower increase depending on the design of your engine, but it will improve throttle response and reduce the amount of oily residue build up. Do not remove any material from around where the throttle plate touches in the bore either. Also when doing this procedure, I would recommend purchasing a new throttle body gasket so you won't have any vacuum leaks once reinstalling. This particular tutorial was done on a 1997 BMW 540i.
    Amazon links for various products used in the video for both USA and Canada:
    USA
    Scotch Brite maroon scuffing pad (400 grit): amzn.to/2O62hwd
    Scotch Brite green scuffing pad (600 grit): amzn.to/2MGpgxJ
    Scotch Brite white scuffing pad (1200-1500 grit): amzn.to/2YM0cI9
    600 grit sandpaper: amzn.to/3t020uP
    1000 grit sandpaper: amzn.to/2YkJzmq
    1500 grit sandpaper: amzn.to/3qTem61
    2000 grit sandpaper: amzn.to/3iWGzWX
    Metal polish: amzn.to/3tytqIH
    Painter’s tape: amzn.to/3jlUB4H
    Threadlocker: amzn.to/31PdODU
    Flap wheel kit: amzn.to/3cT0t3D
    Penetrating oil: amzn.to/2OnKHo2
    Canada
    Scotch Brite maroon scuffing pad (400 grit): amzn.to/3pW1ZGl
    Scotch Brite green scuffing pad (600 grit): amzn.to/2MEQowT
    Scotch Brite white scuffing pad (1200-1500 grit): amzn.to/3tvlAPL
    600 grit sandpaper: amzn.to/2YhR9OJ
    1000 grit sandpaper: amzn.to/36e2fZs
    1500 grit sandpaper: amzn.to/3cfSJZx
    2000 grit sandpaper: amzn.to/3pot4BF
    Metal polish: amzn.to/3aACPGZ
    Painter’s tape: amzn.to/36JqIpS
    Threadlocker: amzn.to/3fL8XvO
    Flap wheel kit: amzn.to/3cT6YDO
    Penetrating oil: amzn.to/3uoJlsp
    Website: 4diyers.com
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    Tools/Supplies Needed:
    -socket set and ratchet
    -throttle body cleaner
    -lint free clothes
    -new replacement throttle body gasket
    -tape
    -rotary grinding stones
    -penetrating oil
    -Dremel/rotary tool
    -flap wheel drum sanders ranging from 40 grit to 320 grit
    -400 grit wet/dry sanding paper
    -abrasive pad (finer than 400 grit)
    -metal polish
    -thread locker
    Procedure:
    -first remove the throttle body from the vehicle
    -remove the butterfly from the throttle body, most are held in with two screws that go into the shaft
    -if you can, also remove the shaft and linkage
    -tape around the shaft or the hole where the shaft was so no metal shavings get into that area and cause premature wear for the bushings or bearings
    -in order to smooth out those edges, you can use grinding stones for either a drill or rotary tool such as a Dremel
    -when using a grinding stone, its best to use WD-40 penetrating oil with it so the aluminum material doesn't plug up the stone and it'll no longer cut away any material
    -once you are satisfied with the sharper edges being ground down, you can down move onto sanding drums for the rotary tool
    -once you have reached the highest grit in a flap wheel drum sander, you can now do some sanding by hand with 400 grit and add some water for lubrication
    -depending on the color, will depending on how course the abrasive pad material is
    -I started out with green and then moved onto the red pad for the finest compound
    -you can also use water with this too to help finer sanding and to keep the dust down
    -again once you are satisfied, you can now move onto a metal polishing compound
    -the metal polishing compound I would recommend is Eagle One
    -apply the polishing compound paste and rub until highly mirrored finish
    -multiple coats can be applied to achieve a higher polished surface
    -once you are done with the bore, you can now move onto the throttle plate
    -most throttle plates are smooth to begin with so you can skip directly to the Scotch Brite stage using the same procedure and finally move onto the metal polishing compound
    -once done, you are ready to reassemble the throttle body
    -make sure you peen the thread of the screws on the other side to ensure they don't come out or apply Lock Tight thread sealant
    -install new throttle body gasket along with throttle body to your vehicle
    Thank you to all those who watch my videos and support my content. Don't forget to subscribe to my channel for future tutorial videos and like my video if you found it helpful. New videos are always being uploaded every week!
    © 4DIYers 2013
    All Rights Reserved
    No part of this video or any of its contents may be reproduced, copied, modified or adapted, without the prior written consent of the author.
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КОМЕНТАРІ • 159

  • @4DIYers
    @4DIYers  3 роки тому +2

    Amazon links for various products used in the video for both USA and Canada:
    USA
    Scotch Brite maroon scuffing pad (400 grit): amzn.to/2O62hwd
    Scotch Brite green scuffing pad (600 grit): amzn.to/2MGpgxJ
    Scotch Brite white scuffing pad (1200-1500 grit): amzn.to/2YM0cI9
    600 grit sandpaper: amzn.to/3t020uP
    1000 grit sandpaper: amzn.to/2YkJzmq
    1500 grit sandpaper: amzn.to/3qTem61
    2000 grit sandpaper: amzn.to/3iWGzWX
    Metal polish: amzn.to/3tytqIH
    Painter’s tape: amzn.to/3jlUB4H
    Threadlocker: amzn.to/31PdODU
    Flap wheel kit: amzn.to/3cT0t3D
    Penetrating oil: amzn.to/2OnKHo2
    Canada
    Scotch Brite maroon scuffing pad (400 grit): amzn.to/3pW1ZGl
    Scotch Brite green scuffing pad (600 grit): amzn.to/2MEQowT
    Scotch Brite white scuffing pad (1200-1500 grit): amzn.to/3tvlAPL
    600 grit sandpaper: amzn.to/2YhR9OJ
    1000 grit sandpaper: amzn.to/36e2fZs
    1500 grit sandpaper: amzn.to/3cfSJZx
    2000 grit sandpaper: amzn.to/3pot4BF
    Metal polish: amzn.to/3aACPGZ
    Painter’s tape: amzn.to/36JqIpS
    Threadlocker: amzn.to/3fL8XvO
    Flap wheel kit: amzn.to/3cT6YDO
    Penetrating oil: amzn.to/3uoJlsp

  • @blairguinea1337
    @blairguinea1337 4 роки тому +10

    Great job Sir, perfect explanation and no bullshit music and 7 years late AND in lockdown

  • @ColdWarVet607
    @ColdWarVet607 8 років тому +8

    1000% Excellent tutorial. You did a great job going thru each type of materail/device you used for each step. All presented in perfect order, perfect advice and tips for each step. I've seen many video's such as this and many if not most skip everything you detailed and just say "sand out" or grind. Working on mine now thanks much for the excellent advice and walk through. As we use to say in the military a big Bravo Zulu for you ! (thats a good thing)

    • @4DIYers
      @4DIYers  8 років тому +1

      +Don Agneta I really appreciate the kind words, thank you so much!

  • @jamesexploringonline872
    @jamesexploringonline872 7 років тому +8

    thank you for taking the time to explain all that.. I will be doing my LS1 tomorrow keeping in mind your great tips.
    cheers James

    • @4DIYers
      @4DIYers  7 років тому +1

      Awesome to hear James and thank you for the feedback. Feel free to post up some before and after photos on my Facebook page :)

  • @4DIYers
    @4DIYers  10 років тому +27

    There really isn't much of an increase of horsepower considering you're not increasing the size of the bore where the throttle plate is. But this does allow the air to flow smoother into the intake, increase throttle response, reduces drag on the air flow, and prevents the oil/film build-up inside the throttle body.

    • @carolinawestern3875
      @carolinawestern3875 3 роки тому +6

      Correct! This is more for the purpose of efficiency. I've been doing mechanics since my teens, and have always stressed the importance of what sometimes just a good cleaning will do! Like air conditioning systems for example.

    • @dragan3290
      @dragan3290 2 роки тому +2

      Hi. I'm doing my first throttle body. I marked with a fine sharpie for the butterfly valve. I have created quite a funnel effect. I'm hoping to increase response as you mentioned. I'm a newbie and I appreciate you explain every single process! Including grit of paper!

  • @Hurtyourfeelingsagain
    @Hurtyourfeelingsagain 10 років тому +14

    Awesome video, I learned a lot. Are you constantly cooking popcorn?

  • @4DIYers
    @4DIYers  9 років тому +3

    +Argenis Bautista No I do not offer this service, but a local performance tuning shop would. Also if you have the same car as mine, the intake manifold doesn't require this same procedure as well. It has a plastic composite intake manifold instead, which was designed to be as large as possible as well as being very smooth inside. But I would recommend cleaning it as they can have a build-up of debris on the inside over time, especially if you've had a PCV failure and this can affect the vehicle's performance. If you wanted to go with the extra step, you can polish and port the heads. That would be much more costly, but it is a possibility.

    • @stanleystalvey6185
      @stanleystalvey6185 7 років тому +3

      Excellent. I've been doing work like this since the 1980's..

    • @lynnchelo4727
      @lynnchelo4727 4 роки тому

      4DIYers buy on EBay $99 and it is ported all the way. Much faster and more hp.

  • @markphilpot4981
    @markphilpot4981 4 роки тому +1

    Pretty nice job on both units. It matters about taking your time and being careful! I see you were and it shows in the result. Good job and good video. Would like to see and hear the results of your work, ok?

  • @rickypantoja9617
    @rickypantoja9617 8 років тому +2

    going to give this a shot tomorrow

  • @stanleystalvey6185
    @stanleystalvey6185 7 років тому +1

    Your presentation, content and commentary in this video is extremely intelligent and I'm very happy to have this engineering information. I'm an engineer and scientist so I enjoyed this very much. Also, I build racing engines and muscle cars for hobby over 40 years now. Thanks for posting this video.

    • @4DIYers
      @4DIYers  7 років тому

      Excellent to hear, thank you so much for the feedback and support. Greatly appreciated!

  • @calebsherman9255
    @calebsherman9255 3 роки тому

    Great video, very good step by step.

  • @aaronkowalewski659
    @aaronkowalewski659 Рік тому

    I'm new to this and I realize that this is an older video, but how tight do you have to make the screws on the flap when reinstalling them? And do you use any thread lock?

  • @voodoonights551
    @voodoonights551 7 років тому

    question, in head port and polish .... if I do a port in polish ok would the work involved in doing it would that act on my heads be better than just purchasing aftermarket ones I really don't want to pay for , I want to build instead of buying

  • @Samson-EC
    @Samson-EC 3 роки тому

    Are you not increasing the size of the bore by removing the aluminum? Does it not get thrown out of spec then ?...thks..jc

  • @christopheragnes3549
    @christopheragnes3549 9 років тому

    Can this be done, the same way? For the Electronic Throttle Body?

  • @user-ub5rg6fn6e
    @user-ub5rg6fn6e 4 роки тому +3

    Great Video!

  • @Ed-qu8nz
    @Ed-qu8nz 3 роки тому +2

    Have you ever tried narrowing the shaft?

  • @chiefgilly.7729
    @chiefgilly.7729 7 років тому

    UNIQUE youasked allot with one question. I assume your bottom end is cast not forged? 55mm to 65mm will not yield enough gain to make or break bottom end, that's good. A power adder ie, nos, turbo or SC will push bottom end.
    You need to be accurate in fuel pressure adjustment. You need to seriously think of dyno tuning because 55mm to 65mm is enough change to cause detonation if your too lean.
    What is your exhaust setup?

  • @saidrodriguez462
    @saidrodriguez462 3 роки тому

    How long does it normally take to port a throttle body on any car? Please answer im very concerned my guy did it in 10 minutes

  • @TylerMoffatt
    @TylerMoffatt 10 років тому +2

    What are the benefits to porting a TB?

  • @dennisfox2344
    @dennisfox2344 5 років тому +3

    Well done video.

  • @tommybaker4330
    @tommybaker4330 8 років тому +6

    It might be helpful to replace phillips head screws with allen head screws when putting the throttle plate/flapper back on the throttle shaft. Probably a 1 time operation, but allen heads are a lot less likely to get screwed up when installing/removing. If phillips heads get screwed up in removal, you can go to the next larger thread by drilling them out. These threads are usually metric so there is not a huge difference in size ( 1 millimeter = .040") also enlarge hole in throttle plate to allow it to center itself in the bore before tightening. Drilling and tapping with plate installed tends to lock plate in position. You can usually find button head allen screws if you are concerned about air flow compared to the regular square shouldered allen screws.

    • @4DIYers
      @4DIYers  8 років тому +1

      +Tommy Baker Excellent tip, thank you for sharing.

  • @petescarport
    @petescarport 4 роки тому

    I know this is an old video but came across trying to find how to do this. I have a 91 318i BMW. I found a forum that suggests to bore out the secondary plate from 3mm to 57mm. I can't find any info on doing this and wanted to see if you had any info or how to do. Thanks and subscribing. Great video

    • @4DIYers
      @4DIYers  4 роки тому

      Thank you for the support :) For boring out a throttle body, it'll need to be done on a lathe. It'll have to be completely disassembled, the slot in the center shaft will need to be wider, and a new throttle plate will need to be made.

  • @Micheal153
    @Micheal153 7 років тому +4

    i must say i just stumbled across this video but you make it seem so simple and explain the right amount not to much and not to little #newsub

    • @4DIYers
      @4DIYers  7 років тому

      Awesome to hear and thank you for the feedback :)

  • @C4H10N4O2
    @C4H10N4O2 7 років тому +1

    The throttle body on my suzuki look like your finished results ! Considering the quality of their paint jobs and other details I would never have guest before looking inside

    • @4DIYers
      @4DIYers  7 років тому

      Perhaps someone polished it previously? What type of Suzuki? Don't forget to subscribe :)

    • @C4H10N4O2
      @C4H10N4O2 7 років тому

      4DIYers a dr650rse, and I know that no one touched it, not even to clean it.

  • @33ordie
    @33ordie 10 місяців тому +1

    nice job!!

    • @4DIYers
      @4DIYers  10 місяців тому

      Thanks!

  • @johnbiddle1738
    @johnbiddle1738 7 років тому

    What are some performance gains I'll feel/see from doing this? Ima newbie

    • @4DIYers
      @4DIYers  7 років тому

      I have the details posted in the video description. Don't forget to subscribe!

  • @krallopian
    @krallopian 8 років тому +14

    I have the same stones.. same ancient Dremel.. and same throttle body! =D
    Looks like I know what I'm doing tomorrow haha

    • @4DIYers
      @4DIYers  8 років тому

      Awesome to hear and keep me posted on the results!

    • @bowlingballmagic
      @bowlingballmagic 5 років тому

      4DIYers someone said that your not supposed to see any light come through when the throttle is in the closed position, but I have 1/32” to maybe 3/64” ,3/4 around the diameter. Is this okay? This T/B is OEM for a C6 vette
      Thanks

    • @bowlingballmagic
      @bowlingballmagic 5 років тому

      *1/32-3/64 gap

  • @johnlaska2875
    @johnlaska2875 8 років тому +8

    You polish the combustion chamber and the exhaust ports not the intake. Polishing helps keep carbon deposits from building up on the exhaust ports. You need a rough finish to increase boundary layer flow against the surface of the intake manifold. Dimpling works the best but is very hard to do in most cases. Of course we are only talking around a .5 to 1 percent difference in power increase so in most cases its not worth it to dimple so just rough sandpaper is the next best thing. We have also dimpled intake valves as well for an extra .3 hp on the small engines.

    • @jacobpulliam1748
      @jacobpulliam1748 6 років тому +1

      At the throttle body i think it helps prob not much, once you get into the intake manifold and cylinder head it should defently be slightly rough

    • @edlingja1
      @edlingja1 6 років тому +1

      I always wondered why people polish the snot out of the intake. It makes sense that you would disturb the valves, but how to do it without damaging that's where the money is made!
      But the main thing is that many passenger vehicles have quite a bit of crankcase ventilation going on directly in front of the TB. You should really clean it like every 5-15 years depending on mileage & personality. I guess this is a big bmw though, so idk if it has a turbo or whatever. If there is a large, or multiple, turbo(s) you could probably go polished TB & further work to disturb the remaining length. The reality is that alot of the combustion at the top end will be ocurring outside the cylinder anyways.

  • @julianoliva2850
    @julianoliva2850 2 роки тому

    Woow that polish is like a mirror finish

  • @roysandoval8230
    @roysandoval8230 5 років тому +1

    Outstanding video, many thanks...

    • @4DIYers
      @4DIYers  5 років тому

      Thank you :)

  • @ElectricalPorkChop
    @ElectricalPorkChop 7 років тому

    Do you think a cylinder honing tool would work for this?

    • @4DIYers
      @4DIYers  7 років тому

      I've never used one on this application but it should work fine. Just keep the surface well lubricated as the stones can plug up easily and do not touch the area around the butterfly.

  • @websterilderis2554
    @websterilderis2554 9 років тому +3

    if you weren't planning on showing your face the entire video, im sorry to say but you did too good of a job, lol.

  • @GxHxN
    @GxHxN 4 місяці тому

    Would it be possible to cut a bigger butterfly so you could open up that contact area more?

    • @4DIYers
      @4DIYers  4 місяці тому

      Yes you can bore out a throttle body and make a bigger butterfly.

  • @chrisreidland
    @chrisreidland 7 років тому +1

    try a product called Heavy Metal Green compound for final polish.

    • @4DIYers
      @4DIYers  7 років тому

      Excellent tip, thank you for sharing! Don't forget to subscribe :)

  • @IsmaelRavenlock
    @IsmaelRavenlock 9 років тому +1

    did you use a micrometer afterward?

    • @4DIYers
      @4DIYers  9 років тому

      Ismael Ravenlock Nope, there is no need for it.

  • @user-jf1mq9os1p
    @user-jf1mq9os1p 8 років тому +2

    this is my trick

  • @turkandproud69
    @turkandproud69 8 років тому

    changing the throttle body from 55 to 65mm. inoly have the tps and screw to adjust idle. does TBs mess with your idle and cause flat spots?

    • @4DIYers
      @4DIYers  8 років тому

      +micheal balma What is the upgrade on??? I did an upgrade like that years ago on a Ranger and the computer was able to adjust accordingly to the larger bore. As for causing flat spots, no. It could be an issue with the new TPS if it works on a potentiometer.

    • @turkandproud69
      @turkandproud69 8 років тому

      +4DIYers i got it welded on with a plate. it doesnt have a iac valve anymore unless i make a custom mount or something. could i just ise the screw for cold starts and etc?

    • @4DIYers
      @4DIYers  8 років тому

      Do you mean the idle adjustment screw???

    • @turkandproud69
      @turkandproud69 8 років тому

      +4DIYers yeap. if i cant use the IAC Valve. can i just use the idle screw to control the idle?

    • @4DIYers
      @4DIYers  8 років тому

      It's not something I would recommend as it's a fixed adjustment as opposed to an IAC valve which is a variable adjustment controlled by the vehicle's computer. Therefore you may setup the throttle for when the engine is warm, but it'll most likely be too low for when the engine is cold. Same goes for a change in altitude as well, the engine won't have a way to compensate for that, therefore you'll most likely encounter running issues.

  • @stingray2088
    @stingray2088 10 років тому

    If I polish my TB is it as good as porting it?

    • @4DIYers
      @4DIYers  10 років тому

      Unfortunately no... The porting allows more air into the throttle body. But that also depends on your throttle body design. If you have odd edge or an irregular shaped bore, it tends to cause turbulence in the throttle, therefore reducing the flow pattern.
      You can go ahead and polish the throttle which does improve some of the performance. But you won't be able to achieve it's maximum potential.

  • @ThePerpetualStudent
    @ThePerpetualStudent 5 років тому

    Could you make a larger throttle plate?

    • @4DIYers
      @4DIYers  5 років тому

      Yes you can. The throttle body can be bored and then you'd need to make a larger diameter plate in most likely a lathe.

  • @turkandproud69
    @turkandproud69 8 років тому

    gain or loss from a 65mm throttle body from 55mm port matched with intake,headers,exhaust on a 2.2L motor?

    • @4DIYers
      @4DIYers  8 років тому

      +micheal balma If you're increasing the size of throttle body, I would also recommend upgrading the fuel delivery as well, especially since you're increasing the flow of exhaust as well. You should certainly experience some noticeable gains. As to how much, well it's hard to say how much because it's dependent on if it's extremely de-tuned from factory or not.

    • @turkandproud69
      @turkandproud69 8 років тому

      The injectors are 220cc.i will be using stock injectors but aftermarket sard fuel regulator. Its a 5sfe engine a engine thats always lean. Hoping this will be sufficient. And it wouldnt be tuned. Only thing ill be doing extra is porting the cylinder head and advance timing & fuel pressures

    • @4DIYers
      @4DIYers  8 років тому

      Not sure what injector design you have, but sometimes you can upgrade them to a multi hole to help optimize the air/fuel mixture. I would also recommend porting the intake manifold as well and use some ball hones to smoothen out the internal rough casting. Have you considered phenolic spacers too??? Helps keep the intake heat transfer down.

    • @turkandproud69
      @turkandproud69 8 років тому +1

      +4DIYers i have welded the throttle body onto the manifold and ported it and gasket matched it and also smoothed the runners.

  • @MrClayFTW
    @MrClayFTW 9 років тому +3

    Great DIY man im about to port and polish the living shit out of my caddys upper and lower manifold cause its some thick ass aluminum haha. If i can get as great of a finish as you on the inside and outside of my upper manifold especially i would be so stoked.

  • @techstar4547
    @techstar4547 5 років тому

    Can I just do it by hand with sand paper and WD-40 ? Starting with 1000 and finishing with 3000 ?

    • @4DIYers
      @4DIYers  5 років тому

      Yes you can but it'll definitely be work intensive.

    • @lowrider8464
      @lowrider8464 4 роки тому

      Exactly how much do grind out while porting it? I know you don't wanna go to thin

  • @skylersmall6322
    @skylersmall6322 7 років тому

    Would I need to retune my car after this? 07 Mustang GT

  • @turkandproud69
    @turkandproud69 8 років тому

    is a 220cc injectors with a aftermarket fuel regulator capable of handling a throttle body upgrade from 55mm to 65mm ported manifold and a port polish cylinder head with stock bottom end? cheers

    • @4DIYers
      @4DIYers  8 років тому

      +micheal balma Unfortunately I'm not familiar with those engines so I am not sure. It would be best to install an air/fuel meter to determine if your car is running accordingly. You don't want it running too lean and you'll lose performance and then there is the risk of damaging the engine.

    • @turkandproud69
      @turkandproud69 8 років тому

      +4DIYers i will be installing a aftermarket fuel regulator. the engine is prone to run lean as it is stock standards.

    • @piecartbox
      @piecartbox 8 років тому

      +micheal balma man I thought my 360cc were small. Fuel regulator is for when u run more boost/pump/injector and the new pressure from the pump is overrunning the stock unit.

    • @chiefgilly.7729
      @chiefgilly.7729 7 років тому

      A Fuel Pressure Regulator is used in a return style fuel system. Fed EPA regulations require all new cars to have returnless systems to reduce fumes created from fuel splashing back into the tank. EPA screwed the manual tuner.
      Get a wideband air/fuel ratio gauge. Helps to tune. And you'll see if you run too lean. Although I don't think you'll run too lean with this mod. The only time there will a difference anyways is at WOT.
      Peace out Holmes

    • @turkandproud69
      @turkandproud69 7 років тому

      ive decided to go for a 60mm throttle body. its gotta better sound but im just trying to adjust it at the moment and its running pig rich

  • @rickchalcraft
    @rickchalcraft 10 років тому

    thanks for the video, ive seen the butterfly shaft machined down betwrrn the screws and the sidewalls, so its down to the flap itself, what are your thoughts on this? what do you use to stop the screws falling out once they have been out? threadlock?
    thanks

    • @4DIYers
      @4DIYers  10 років тому

      I have seen people cut down the shaft in the past and it would be a great idea if you had the means to do it and also if you're able to remove the shaft. Once the butterfly is open, even with the stock shape of the shaft being round, it can change the airflow to some extent.
      As for the screws, you either peen the threads or apply some threadlock.

    • @ihateliberals518
      @ihateliberals518 10 років тому

      4Diyers really, for a street car, that kind of mod would give very little added performance anyway, unless it's a track and you're needing every little bit to be more competitive,

    • @4DIYers
      @4DIYers  10 років тому +1

      The way I look at it, every little bit counts... Someone can do a series of small 1hp performance gains. In the end if they've improved 10 different items, then they have a 10hp increase. It doesn't mean this is something for a track only application, people can use this for added street performance as well. Not to mention just for regular daily driving, it may have positive effects on fuel consumption as well.

    • @ihateliberals518
      @ihateliberals518 10 років тому +1

      I agree, I have a 97 prelude i'm working on. I can't afford a super charger, or turbo, so I have to do little things like this, that the young guys probably don't know about. what I meant is, shaving the butterfly is such a minor mod, and you take a big chance on screwing it up for such a small gain. porting and polishing the tb is a definite must. alopng with that I've also built my own TRUE SEALED RAMAIR SYSTEM. btw my prelude is making about 205-210, not bad for a stocker. I prefer to under rate the power, it probably makes a few more, but i'll leave the bragging for the teens who think putting a coffee can muffler on makes it a race car. I must be one of the oldest import guys out there. i'm 46, and my dad, who helped me put in the lowering springs in, he's 67. we've always built big block mopars, this is our first import, having fun with it.

    • @rickchalcraft
      @rickchalcraft 10 років тому +1

      4Diyers
      well ive done it, every little helps, it was tense cutting the shaft down but all done and polished up,
      im going to sand and polish my inlet manifold next as that is rough, its an FSI engine so no need to keep the roughness in for mixing the fuel,
      thanks for the help

  • @RY4NP
    @RY4NP 7 років тому +2

    are there noticeable power gains?

    • @4DIYers
      @4DIYers  7 років тому +1

      The biggest noticeable improvement was throttle response, but this will depend on your vehicle and how much of a modification was made.

  • @low72
    @low72 10 років тому

    If the oil / buildup stuff doesn't get stuck to the inside after you do this the P&P, where does it go? In the engine?

    • @4DIYers
      @4DIYers  10 років тому

      It'll just get burned up in the combustion chamber just like if there was any excessive oil content within the intake.

  • @TheSpeedfreak665
    @TheSpeedfreak665 5 років тому +5

    I think it's honestly better to leave the flapper in place as a guide.

    • @HappyFeetWomboCombo
      @HappyFeetWomboCombo 2 роки тому

      Yeah but he mentioned not to hit the butterfly, and with these types of attachments, you can get closer to it. I wouldn't say much of a difference, but depends on the shift length either side

  • @chiefgilly.7729
    @chiefgilly.7729 7 років тому +2

    if it wasn't mentioned an alternative I found better than scotchbrite is steel wool. There are progressively finer grades, same as sandpaper. Use the polish with the SW. Finish with "000" (finest grade) and just buff residual polish off w/clean microfiber towel and it will be highly shined.
    Thanks for the video. Too bad no one will see the effort.

    • @4DIYers
      @4DIYers  7 років тому

      Awesome tip, thank you for sharing!

    • @geraldgreen5371
      @geraldgreen5371 6 років тому

      Chief Gilly . ....yeah but l bet you it should be a noticeable difference...

  • @toddgilmore118
    @toddgilmore118 4 роки тому

    I used a wire wheel on my drill to just scrape away ( basically ) at the inside of the plenum and used a fine sand paper for smooth out all the rough feeling ridges from the wire wheel left behind...it's not premium polished or shined, but it does at least feel smooth as I can get it with what I had.

  • @antz19coyote73
    @antz19coyote73 8 років тому +1

    I know all aboot it! Ey!

  • @danj7112
    @danj7112 2 місяці тому

    Does that add power

    • @4DIYers
      @4DIYers  2 місяці тому +1

      Yes it can.

  • @toddgilmore118
    @toddgilmore118 4 роки тому +1

    Better fuel flow through it being polished, yes!! with rough ridges, scuffs, or scratches gas will no doubt have to bounce off them to pass through the throttle body. Better smoother fuel flow = Better MPG

    • @lynnchelo4727
      @lynnchelo4727 4 роки тому +5

      Todd Gilmore Gas does not go thru the throttle body on fuel injection. Only air.

    • @TheHitman-
      @TheHitman- 3 роки тому

      @@lynnchelo4727 😂

    • @dragan3290
      @dragan3290 2 роки тому

      Only air! No fuel!

  • @3rdGenGuy
    @3rdGenGuy 10 років тому

    Does this mod increase or decrease horsepower?

    • @4DIYers
      @4DIYers  10 років тому +1

      This mod increases power and throttle response.

    • @lees.4084
      @lees.4084 9 років тому

      4Diyers only on SOME vehicles. On most, the TB is not a restrction to the engine, and porting will offer no real power gains.

    • @MrClayFTW
      @MrClayFTW 9 років тому +2

      Lee S. Yes but this same concept can be applied to the upper and lower manifolds as well and if youve got a car like my caddy that has a really restrictive stock air intake and intake manifolds you would see serious gains from adding a cold air intake and porting and polishing. Ive heard many people say not to get carried away with the porting part tho and in fact several say less is more and the gains are from smoothing everything with polishing compound.

    • @lees.4084
      @lees.4084 9 років тому

      MrClayFTW
      Not sure which Caddy engine you have, but regardless, you won't likely see any tangible gains from this.
      There would have to be a demonstrated deficiency
      with your particular manifold design in order for this to be of any significant gain.
      Which year and engine do you have?

    • @3rdGenGuy
      @3rdGenGuy 9 років тому +3

      Lee S. I did this mood to my Colorado 3.5l and improved throttle response a lot.
      Mpg and 0-60 is the same

  • @joshhutch4432
    @joshhutch4432 7 років тому +3

    How did that extra one horsepower treat you?

    • @4DIYers
      @4DIYers  6 років тому +4

      Horsepower increase isn't so much noticeable with this particular car, but the throttle response has greatly increased. It depends on the vehicle.

    • @philmitchell9552
      @philmitchell9552 5 років тому

      Things like this aren’t for a direct horse power increase, it’s for improved drivability, making the intake nice and smooth the whole way through will let everything flow nicely and therefore have a more responsive engine

  • @Meekmillan
    @Meekmillan 2 роки тому

    Shout out to you and MaxBore Lol

  • @NoWr2Run
    @NoWr2Run 5 років тому +2

    DAMN SON, I don't know how you get it so round after using small tools like that, FACT. DAMN NICE WORK, ALOT OF TIME & DETAIL GO INTO THAT, JUST LIKE POLISHING THE INTERNALS OF GUNS. I'm just going to use a flap wheel a little bigger than my throttle body to take out the taper below the throttle plate.Then polish it up the best I can with my dremel ?

    • @4DIYers
      @4DIYers  5 років тому +1

      Thank you, I really appreciate the kind words and feedback :)

    • @NoWr2Run
      @NoWr2Run 5 років тому

      Marshall &, I know right ? I actually watched it a few times just going man that's a lot of work & looked GREAT AFTERWARDS. Like doing a hand rubbed on oil finish on a wooden rifle stock, getting all the scratches out, rubbing & rubbing, coat after coat.

  • @BMWhips
    @BMWhips 8 років тому +1

    good ol m62

  • @leo82yk
    @leo82yk 4 роки тому

    How did you polish?

    • @4DIYers
      @4DIYers  4 роки тому

      It's covered in the video, but you can also refer to this video which is a much better quality ua-cam.com/video/nTKJKE1qRiA/v-deo.html

  • @Mvasilev69
    @Mvasilev69 3 роки тому

    Looks easy but its hard

  • @motoXcR
    @motoXcR 7 років тому +2

    SIZE: 8

  • @EvilJ069
    @EvilJ069 9 років тому +1

    The constant flashing activated my epilepsy and gave me a seizure...

  • @bman737
    @bman737 9 років тому

    Please note that your car may run quite lean if your ECU does not compensate for added air.

    • @4DIYers
      @4DIYers  9 років тому

      bman737 Considering you aren't enlarging the bore of the throttle body around the throttle plate, this should make that much of a different. The end is able to compute any adjustment very fast regardless. With this modification, it's creating air flow efficiency, reducing drag, and optimizing atomization.

    • @thomaspfeiffer1763
      @thomaspfeiffer1763 5 років тому +1

      Unhook the negative terminal for 20 minutes turn your lights on to drain any stored energy in the vehicle hook battery backup put the key in the on position for 10 seconds start it let it idle reaches operating temperature drive it as normal as possible for the next couple of days. Nothing too aggressive. That way itll relearn correctly. and your fuel trim should adjust accordingly

  • @82raptor
    @82raptor 9 років тому

    I could see this gaining POSSIBLY 2 to 5 hp.

    • @menogusta9829
      @menogusta9829 9 років тому +1

      82raptor But the power to $ ratio is very high. The people who do this generally already have most of the tools and consumables involved in the process.

    • @MadCrazyGaming
      @MadCrazyGaming 6 років тому +1

      Fuck It lol its free

  • @bartojoe
    @bartojoe 8 років тому

    benefits of doing this?

    • @4DIYers
      @4DIYers  8 років тому +1

      +bartojoe Yes there is. It will increase throttle response, reduce the chance of oily residue build up in the bore, reduce airflow turbulence which will reduce performance, a mild increase in performance depending on how poorly designed the existing throttle body is, and increase fuel economy.

    • @piecartbox
      @piecartbox 8 років тому

      +4DIYers If you've opened your intercooler piping and plenum up huge this might help a bit... but most ppl who have welded up a new plenum will just use a larger TB since they are fabbing a new surface for it to mount to anyway.

    • @4DIYers
      @4DIYers  8 років тому

      piecartbox This is an NA engine. This is just intended for anyone wanting to modify stock parts without getting into too much more or an excessive amount of work retrofitting a new throttle body.