B16a Intake Manifold Porting Development SRDmotorsports P30
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- Опубліковано 8 вер 2024
- An often slept on Intake Manifold from the B16a Si non typeR
we discuss its potential and possible advantages when it comes to runner length and porting it for greater performance over stock
We also calculate with you guys the 2nd harmonic effect and rpm range on a b16a dyno sheet we have to expand on the topic even further
This is to give more ideas and info for each one of you guys
that could lead to a more fun project or plans for the future
an take note! Locally this is available so do let us know!
we manly say this only because shipping costs have gone up
but we do ship internationally
Check us out at our page at
/ srdms2
for more info, details and photos
and for business inquiries hit us up at the page
#SRDmotorsports
#b16a2
#intake
#porting
#B16a Intake Manifold Porting Development
#B16a Civic Si Intake Manifold Porting Development
#B16a Intake Manifold Porting Development P30
#B16a Si Intake Manifold Porting P30
#B16 Si Intake Manifold Porting Development P30
#B16 Intake Manifold Porting Development P30
#civic si
#honda civic si
#b20 vtec
#B16a intake manifold
#Porting intake
You're a mad scientist. This is the kind of hard-to-find information i spend hours and hours researching to find. Thank you sir
Oh wow! Thank you for the kind words man!
Actually maybe we are “both” mad for liking this kinda things :)
But as we all know, practical and logical always made sense :)
But that’s a compliment I will gladly accept😎
Interestingly today June 29, I just received an ITR manifold from a few racers down south in Iligan City, for porting which is perfect!
This would let me share to you guys the work, as people might start thinking I’m a typeR hater 😀 but nahhh!
@@SRDmotorsports haha can't wait to see it! Keep up the great work and information !
@@novinnovations4026 ey man! It’s guys like u that make it worth this I mean I am suuure it can create new and more ideas along the line
All the while we avoid people spending on wrong stuff 👍
This is a golden DIY, thank you for sharing!
I try to do my best as the goal of this shop channel is to “share” awareness on work, meaning if others can’t explain what they can do for you? Why send them your money? Lol
Ofcourse for peeps like you on a different and far away country, shipping isn’t practical and Ofcourse a lot of DIY guys so I am aware and try to help
But see for our locals here? I hope they don’t get it twisted that a skilled shop work result they can replicate as DIY lol
Tbh I’ve had DM’s at the shop page of guys who just had a shop build their engine showed me photos and wow just like how we do it? Except they made
198whp on JE pistons b18c on skunk2 cam
When we made
201whp on oem P30 pistons b18c on skunk2 cam lol!!!
Watsup 😂
Thank you I am looking to do some modifications to my f22 in my cb7 and this is the kind of diy stuff I'm looking for
That’s definitely nice to know! 😎
Great and very useful. I see that you can get a lot out of the engine if you follow your steps. You got my like here, like always. Keep up mate. :)
Thaaaanks man!
The funny thing is on motorbikes especially 4cylinder? It’s the same
The difference is it comes from the factory tuned better and too well already so the power on a CBR1000RR is higher than a D16 thats 1600cc 😅
@@SRDmotorsports Yes mate. It think a lot higher. Probably there is also the weight difference.
@@RRRRefuelRideRace yes yes that’s true
Eyyyyyy look at that!
Yeah a lot of times especially if it’s a b16a or even a mild stock block b20 the p30 can do good!
I have a type r manifold for my b16a head going to try and port both for my b20 vtec will try to follow your videos great vids as always!!
Oh on your b20 yes it could work for sure :) the combination always matters
Good video - thanks
This will certainly offer significant improvements in high power/ RPM situations how much additional power might one expect in the 4000 to 6000 mid-range where maximum torque may be your objective - Assuming a stock cam for the time being.
Yes sir especially if it’s a b16a when even the torque of a D16 seems higher
Love the commentary! Very informative.
Thank you man! We try… but sometimes we fail at being funny so more practice on the “jokes” lol
Great video - results results results!!
This one may not see a dyno but definitely on the next planned series I do hope it’s a b16a so we can do this actual work and see dyno ftw!
You can really do a lot even though its not a type r. Good work ralph!
So true so true! Hopefully this doesn’t balloon the price of the “not needed” P30 cuz it’s not a typeR 😅
@@SRDmotorsports i got mine before, it was like 4k to 4500.. dat was in 2012 i guess
@@benjieco630 oh gosh i hope nowadays it aint over 6-7k 😮
@@SRDmotorsports ok. Port mo na pla intake manifold ko. Hahaha
@@benjieco630 hahahaha we need a spare if ever so there isn’t a downtime
Well actually this one = is owned by noone
Really interesting, I'm going to try and transfer some of this to make a custom Toyota/Nissan manifold for my nissan
Oh that would work!!!!! nice to see its useful, the video ftw!
Awesome work brother my dad is doing a little something to him manifold, just a little more flow 🛠🤟🙏
Ooooh yeah! More torque for CivRv ftw!!!
Yes sir 🏋️♂️🏋️♂️🏋️♂️🛠🛠🤟❤
@@royalracingtechroyalracing6128 woohoo!
very interesting. learnedalot from watching.Thanks for the awesome content man, its great!
Oh wow thanks brother! Will keep trying to push out these types of content for all of us 😎
Awesome work I am doing something as well nothing much just a clean up 🛠😎🤙🚘
Ooooh that’s awesome anything to get the CivRV runnin snappier is def welcome cuz it got 4wd! Definitely :)
About too put a video out now update 🛠🚗😎🤙🚘👈🙏
@@shiftlifegarage3284 oh that’s it brother I’m waiting curious on the updates! 😎
Very useful information ❤ , thanks for sharing it . That venturi / ventuli plate would be nice to find ... Or to print ... ❤️ Its hard to find it in europe ... I prepare my high compresion pistons and on my d16z6 heag
D i vwould try to port it as diy at home ... By polishing
True true hard to find it nowadays
This video will make the B16A manifold expensive, hahaha! Btw, someone from MFactory's following your videos ;)
That’s my fear hahaha prices will go up lmfao!!!!!
Also, what you said in 6:34
@@findtherightbeat yep when we think about it even driving hard or spiritedly that’s looks to be the good window
It's interesting why Spoon stopped using the Ventuli plate -- that part piqued my interest back in the day but I didn't find much info on it then.
@@SRDmotorsports Any thoughts on the angled throttle body wedge/spacer people were using back in the day? I forgot the brand but it had its heyday in the same period as the Ventuli plate. The angle supposedly improves/equalizes the flow to the intake manifold runners.
Buongiorno ,
complimenti per il lavoro molto molto bello dal punto di vista estetico e credo maggiormente dal punto di vista funzionale e prestazionale, ma il coperchio che è stato tagliato, sarà poi risaldato!!?
Anche io desidero fare questa operazione))))
grazie ancora
Hi very nice work! Please say me what carbibe burr use what type and how much long? Thanks!!
It’s 8inch long just the regular tree shaped catbird or they call it teardrop shape
Amazing video I have a b16a6 down in south africa on a stage 1 tuner 1 cams stock block i won't be going pro series intake after this video. Quick question what tb do you recommend and induction for maximum torque and kw?
Nice the 70mm tb is a decent upgrade and probably a cold air intake extension that helps daily driving torque improvements
Another solid content chief 🔥🔥🔥
thaaaanks man! :) its quite fun to do the calculations kase and alot of times it gives hs that "eureka" moment
All this is great information Ralph. I’m from Australia and was in the Philippines for work, not far from you actually. I was going to come past the workshop and show some picks of my DC2. But I got Covid while I was there and it shorted my trip. I just want to ask, what intake mani would you
recommend for my setup? B20 with sleeved 86mm bore x 89mm stroke so it’s actually a B21 when you round it up. It’s been O ringed too but is still too dicey to run boost, so I want to get the most out of N/A, it currently has kelford 176-c cams and has 190hp at the wheels currently, looking for more but the midrange is superb! Any help from someone with plenty experience would be greatly appreciated!😊
@@nicmccarthy8300 bummer on the Covid man! Sorry it shortened your trip…
I agree 86mm bore is mostly for NA and that’s alright u got a good cam right there
In this rare instance if you aren’t running ITR manifold or if you are, an Ultra Street or Race skunk2 would give u more top end as the displacement already takes care of the midrange
Thanks so much for response, they were my thoughts too. I currently have a Victor X that I’d bought way back and was going to use it for forced induction. It carries up to 10000 rpm but I feel the engine has more to offer through the middle, especially with the lowish rod stroke ratio. Many thanks again and keep up the awesome work!!! 🤙
Yeah the victorX kills alot of midrange for NA use
New Sub here man! From New Zealand :D Just wondering if you had any recommendations for a stock 96 ITR build. Wanting to keep it fairly stock but add some magic 🤣
Oh maaan that’s a fun project!! Actually I agree a stock ITR unit is awesome
I’ve build a few that made 186-195whp on stock ITR cams but it’s the ‘00 spec ITR cams that’s sized like the CTR so that’s something u can eye on to keep the oem them going 😎
It’s a very good video. If we put a intake manifold b16a ( 9inch) on a b18c6 engine ( 7 inch intake manifold ) we would have more torque? but this will not restrain high speed? you sell manifod already ready? you ship to France?🙂.
Yeah it will not restrain power up top for a b18
@sebgtr49 message us at the shop page, link in the description I might have something nice for you 😎
I can’t find the link for the shop page@@SRDmotorsports
It’s all on the video description of all the videos both Ig and Fb link
Would it make a worth while difference to fill and flow the end of the phlenem chamber or would this over charge intakes three and four,a case of while you are in there job.
I think that could be worth while I mean notice on the ultra street? That end is smaller… and one can look at it differently and consider it “filled”
Great work. Do you know how this would compare to an Edelbrock Victor X on a B20Z1 block with B16A2 head @ 12:1 compression?
Oh yes yes the victorX has 4in runners so it’s real short so most likely loss of midrange regardless of comp
BUT…at above 8,200 rpm the victorX will start to shine so it’s a “pick your poison” kinda thing…
@@SRDmotorsports I'm not planning for this engine to even rev to 8200 haha! What do you think is a safe rev limit for the B20 block?
@@dangerpoole tbh stock block I’ve seen okay to 8,200rpm actually
Ofcourse not everyday hitting the rev limiter 😀
@@SRDmotorsports Thank you. The crank, pulley, fly and clutch is balanced and it has high comp pistons but standard rods. I was thinking of setting VTEC 5k to 8k. But it's not a racer, just a weekend toy so I want good mid range and reliability. Maybe the Victor X wasn't the best choice then.
@@dangerpoole oh man that sounds like a killer project! I feel sorry for the tires they be screeching too much 😂
erm.. Sharp edges (as oppssed to rounded) leading edges REDUCE flows.
👍
Where do you get the spoon vintuli plate? I thought they dont make it anymore?
Oh no they don’t make them anymore indeed , I just referenced it and plus a local friend has one from decades ago and yes he won’t sell it to me even though we already built his K24 😂
👍 nice man
it is a nice option for certain set ups :)
Based on the 3rd harmonic that was calculated, wouldn't a ported P30 manifold be just as efficient or better on an ITR for circuit racing or just in general?
in General yes actually especially for circuit racing atleast for me... and the dynograph
and the track 🤣
its why i started porting the P30 manifold years back , because i noticed the length is near ideal, so a lil volume here n there would def help atleast get "near" the ITR top end
lets not forget to facor in "cams"
with that calculation id prolly run a Pro2 cam even on a b18 :) no prob midrange and the cam can take care of the top hmmmm :)
@@SRDmotorsports I'm glad I'm not the only one who thinks so and it seems you've already gone and proven the theory and assumption! Cheers!
@@mfactorypatrick145 I am quite glad too for what you were seeing!!
TBH that’s what I “feel” I would go for it I had a circuit car for fun or for serious
Run a close ratio Mfactory 3-4-5
BUT run a 4.2 final drive to give me the “stretch”
Which makes one wonder or think.. maybe just maybe that is why Mfactory has a 4.0 final drive hmmm! Now that would be fun!
@@SRDmotorsports gearing is all a compromise based on your tire size, redline and desired top speed. So it all depends.
I think in this case, measuring the intake volume of the ITR plenum and modifying the P30 as you suggested would be the ideal setup.
Or maybe that's why the Skunk2 intake manifold for the D series has such long runners that it is practically right up against the brake prop valve on the firewall.
Interesting things to recall after watching your videos.
@@mfactorypatrick145 I was gonna say it’s why my skunk2 sohc manifold luckily misses the brake prop valve but it’s right there next to it = long runners cuz. They prolly knew
Now sadly I just realized I never measured mine when it was cut open wtf now it’s an excuse to spend more and get another sigh our self imposed treasons that make us broke 😂
When you say that you dip the porting bit in ... Was that, 'mix EPF?+ mineral spirits.' and if so what does EPF stand for?
ATF (automatic transmission fluid) that’s lighter than motor oil and the mineral spirits can be kerosene to further lighten it up
@@SRDmotorsports Thank you for that.
By the way, I've a S2 manifold but don't want to cut it open as I'm planning to use a Flex-Hone, to port it. Im thiking of using a larger brush at the entry end of runner, and then dropping down to the narrower brush toward the end where it enters the cylinder head
@@Midnightrider773 I think the flex hone can work and just spend more time near the runner entry (to eat more aluminum) than nearer the head
@@SRDmotorsports Thank you for replying
No prob!
Shorten your bit to 4".....you'll have a lot more control.
True true
so if I understand we want to 3rd hamonics at as high as the max rpm?
what would you recommend for a street car that has max torque at 3000rpm and max power at 6000. Currently the 3rd harmonic is at 8000 to 9200 even without the port in the head and my rev limiter is at 7200.
It's not a manifold suited for this engine and I think it clearly shows that
3rd harmonic because that’s the length that we can physically try to fit in the engine bay
@@SRDmotorsports so for what rpm should I shoot to have the highest 3rd harmonic, around the rev limiter?
@@miralemnermina142 depends on engine and set up… when u mentioned 7,200 I was thinking b20 crv engine that’s why the b20 intake manifold has a way longer runner than even the p30 (have not measured it yet but we know it’s long)
Same with the d16z6 and d16y8 sohc intake manifold the runners are longer as it bends upwards
@@SRDmotorsports unfortunately it's a fiat 1600cc in a yugo with yugo efi intake manifold
@@miralemnermina142 oh sorry I assumed based on the RPM hehehe if u wanna msg me at the shop page il search on pictures of the manifold u use and the engine… pretty sure there are some trick ideas that can come up :)
long runners and short runners, which or does it affect fuel consumption? lets say on a daily driven car.
I’d choose long runners
Mainly cuz I like big cams 😀
it has some effect to fuel consumption. for a daily driven car, better go with long runner since you won't be revving the engine high all the time. you'd be on low to mid-range RPM most of the time
@@n.shiina8798 yeah the effect is “usable power” u step less on the gas cuz u got torque = more efficient than “less midrange” but step on the gas more… if that makes sense
@@SRDmotorsports totally agree. i smirked everytime people deleted variable-length intake manifold for the sake of "high flow" ones on their modern engines. it's not only about the maximum flow!
@@n.shiina8798 so so true!!!! I wanted to say in the P75 video that yes flow is good but
Flow quality > Flow quantity
But some may get offended and this is not Facebook 😅
Just like why I show dyno sheets as visual example… cuz peak power is only 1/3 of the equation but that gets the “wow” from a friend’s friend in FB 😅
Hey Chief, after porting the head or intake manifold, is it ok to paint the inside with a special non peeling paint to have a smoother surface?
Can this help or it is useless.
IMO too scary I mean it might still peel… but I guess polishing it to a finer grit is def doable as I’ve done that, just too tiring 😀 and the Makita screaming “stop”
But good thing to bring it up… as generally a lot get confused by mixing different aspects of different “practice”
Our intake manifold is “dry flow”
Why? Cuz no fuel yet 😎 and the characteristics and reactions in a dry flow aren’t always identical to “wet flow”
Do you want your engine ingesting that paint when it peels off? Polish it to a mirror like finish that's how its properly done.
@@GCS88 time stressing fo sho
But He may also be meaning “Anodized” which could work I think but then costly and man it’s a shame to be hidden 😅
But true polish like crazy like the OG scoot shops aft sanding polish then it’s cloth then lastly “denim” so it’s abrasive seen it before
Hmmm how that got me thinking hmmm
(Moments of craziness again lol)
@@SRDmotorsports I wouldn't put anything in there asides from proper porting, funny enough I got so curious about this and did a research.. Apparently alot of people have been pondering about it for different reasons, while I haven't read a claim that one has have done it, this train of thought was more often than not responded to with foul languages 🤣
@@GCS88 ahahahaha oh maaan on forums back then this would happen 🤣
it sometimes bring up new ideas but often timws just a line you could write on your "signature" on the forums 🤣
What hp gains expected from this particular port job
Really hard to estimate gains like that alone as u see on the example it upgraded to CTR cams too but it’s safe to see 5-8% gains on manifold alone and more with other complimentary parts
I know an SiR 4door that went for this and after the manifold upgrade it can easily “chirp” third gear like light spin and when stock manifold it couldnt
Hi, I got some question. I also use the P30 intake manifold, if I do this Port and Polish in my intake manifold, the function is same as ITR manifold or better than it?
Maybe a bit the same but it’s complicated…. Example on a B16a yes it could work like that but for a B18 or B20 the ITR might work better because of volume it’s bigger
@@SRDmotorsports Oh... So if I custom the volume same ITR, the function just same ITR and better than ITR, is that means?
@@lunwiszy52 for a b16 engine there is a chance yes
@@SRDmotorsports Okayyy, thank you, I try my best custom one.😂😂
@@lunwiszy52 thank you also for checking this out :) and yeah take it slow to get to the shape you need to achieve
I have a 3 spare manifolds let me know would love to trade an let u pick
Oh sweet! Will def let u know man
@@SRDmotorsports 🙏🏻
Yes sir yes sir!
May i ask how did you weld it?
tig weld aluminum... the only way
@@SRDmotorsports Thank you sir. I’ve got a small crack on the IM while installing only tig weld will work?
@@fotismanelides8222 yeah i mean you can take it to a machineshop and most machineshops can tig weld it shouldnt cost alot if its just a crack or somethinf
@@SRDmotorsports Thanks
@@fotismanelides8222 no worries man
How much to do one?
Our page has a pricelist pinned post but it’s usually $200-250
How much to get it ported ?
Hey watsup man… prices are on the page pinned $200-250
I paid for a intake to get done then never received it or was told when it was done been trying to hit him
Up to try to pay for shipping or even just get a refund and haven’t got a reply in a couple months
How much you charge
Our fb shop page has a pricelist pinned post
What motor did you use for that set up did you have stock pistons or high compression piston with the p30 intake manifold
@@user-fm9yj8cy9f it had CTR cams and arias pistons but stock 81 bore we have a dyno here of it , it’s the white ek civic siR last year… made 181-183whp I think
@@SRDmotorsports how would the p30 perform on p75 head an stock b18a1 block with b16 pistons pr4
@@user-fm9yj8cy9f it needs to be modified to work and fit a p75 head
Great videos... Where did you made the harmonic calculation?
Thanks
Bowling’s and Gripo
= same guys that made Megasquirt ftw