Love the videos. I plan on doing this. I recently got the 7120 head that I will also be porting and polishing while I’m at it I will upgrade the rest of the top end with new injectors and bigger throttle body
Just a helpful tip I use a regular tip sharpe marker - red,blue or green to mark where material needs to be removed . some time it's hard to see a scrib mark
I remember reading that the sizes were mismatched to keep the pulses from back flowing into the valves. They had dynoed before and after. The hp was higher before the port match.
I was told by an old time engine builder, that this style of port matching most likely would gain several foot pounds of torque in the mid rpm range, and should also have a improvement in throttle response. But such as Martin said in his video, I was told that it is best to leave about 30 thousands of material around the edge of the gasket port holes to help with turbulence and to also help prevent vacuum leaks..
Forgive me if im not getting this right but you just got a blank piece to make your own gasket basically bolted it to the cylinder head to keep it from moving then got say a box cutter or a exacto knife and started cutting the holes to the exact size of the cylinder heads correct
I would love to see your jeep with 5.7 hemi engine, I'm sure you can do just about anything with your knowledge and skills, you're very intelligence man. Love your videos.
Was it a very noticeable change? I'm installing the s&j 4.7l stroker and will be doing this with the throttle body, the intake of course, 12 hole fuel injectors and the ripp coil mod with a header
how did you make the gasket? what measures did you use? i like all the modifications that you have done to your xj, congratulations, you are an incredible xj owner
+tk106 I don't know, as I haven't installed it yet. I have the new Edelbrock cylinder head and was going to change the intake when I change the head. Even if I had changed the intake I don't think it's something your going to feel. The only way your going to see the difference is on a dyno.
Love the videos man. I've been watchin them for a while now and it inspires me to do more of these mods on my xj. I have 6.5 long arm lift on it and I will be doing a lot of the same things you have done to yours, because of you. Thank you :)
HI, Can you tell me where you got the gasket material and does it do a good job.I am not liking the leaks I get I have tried many brands.thank you Matt
If you have tried many brands, & 1 of those is the Fel-pro thats the higher end/quality 1. I'd make sure u bolting all the intake and exhaust bolts on correctly in the correct torquing sequence and correct torque value. When my exhaust manifold cracked bad, I used the Fel-pro 1 on my 1998 Jeep XJ. I have 4.0L in-line 6 in it too & used the Fel-pro when installing a new header instead of manifold and upgraded the engine mounts(main reason most the exhaust manifolds crack/not just heat). I did the bolts/nuts for mating the header and intake in the pattern my Haynes manual said to and to the torque value it said. I have 55-65K miles on it since then and no exhaust leaks.
I personally haven't tried it yet on my 4.0 but I am currently running the Bosch 280156161 that are 12 hole that work well. I think the Denso 12 hole injectors may be a little too much for the 4.0...
So the manifold now matches the gasket......great job but does the gasket perfectly line up with the inlet ports on the head? I might do this on my ZJ.
Hey bud. I know that this is a 5 year old video, but it is the first time I have seen it. I heard you say that you made that manifold gasket, my question is, did you make it completely from a blank piece of gasket material? Or did you modify a gasket that you purchased? Either way, if you made it from scratch, what did you use as a template? Or if it is a modified version of a purchase gasket, what brand and part numbers is it? Please answer if you receive this memo, or make another video explaining these things. I am very interested, and I'm sure that many other jeep 4.0 folks are also. Thank you..
Yes I made it from scratch and I use the method that I show in this video to make the temp plate for the gasket. ua-cam.com/video/txCBBO_mI1Y/v-deo.html I made the gasket from the cylinder as those ports are large then the intake.
Any improvement noticed? I've got to swap my Jeep engine and thought I'd make some improvements along the way. Wish there was a way to get a modern crossflow head on there.
I haven't installed the intake yet. I also have the new Edelbrock cylinder head and was going to do both at the same time. I matched the intake to the new cylinder head.
Looking at your intake reminded me I wanted to hack up a couple intakes and make 1 larger intake with 2 shorter paths to the TB for all 6 runners, to make a 3 stage intake. Long for low rpms, shorter in steps based on rpm. It won't make more but it will shift the tq if I do it right : )
why? just get a offenhauser 4 barrel intake and throttle body with injectors. The injectors are batch fired anyway and if your boosting then what he did is more then enough. just a larger valves and a voodoo cam will free up 100+ hp
sorry to revive an old post, my cousins and i use to buy old junk vehicles(mostly trucks) and just port and polish the heads and intake and we got big gains. so much so it was a wow factor for a "free" mod. defiantly worth the price of a few gaskets.
He is matching his heads ports to his intake. The gasket was cut out from the heads ports, so is like a stencil or template of his heads ports when he puts it on his intake and removes the metal from those ports. Which now makes them "matched ports" like the title implies, so no he doesn't have to remove material on the head. I believe he said the head is a new Edlebrock head so definitely don't remove any for multiple reasons like warranty, already how they need to be for good performance, Edlebrock has done R&D to get the part right so y fix whats not broke, and etc. If factory I guess he could remove some, but then u have to remove it from the block before doing that so no metal shavings get in there, & to clean out the metal shavings. Really not worth it vs just matching the intake to them and doing what he did then polishing them up for smooth air flow.
Jim Miller you lay gaskets an surface that you want to match and take brass hammer and tap gasket around the edges. Cut out marks or use some heavy paper in the same manner then trace to gasket
The mod is basically designed just to help improve air flow from the intake to the cylinder head. If the engine pulls more air from this modification the ECM will easily adjust the air fuel ratio.
if I have a 4.2 can I put the 4.0 head on it and then change it so It will receive the 1999 beautiful fuel injection or will it fit right up to a 4.2 head ?
IIRC.... their are water jacket hole differences ..... IIRC again, the 4.2 has more holes but i KNOW it can be done.....need the right gasket for sure (cant remember if ya need the 4.2 orr 4.0 gasket howeverr) should be a lot of info about this online
intake flow is only as good as its narrowest point. Grind the port till your blue in the face, if its narrow deeperinside.......thats going to be your max flow
its more complex than that. because of high and low pressure zones. Depending on the application,you need to priorise the velocity instead of volume capacity.
Do you or have you met anyone with the new Edelbrock head for the 4.0, and how well does it work? I'm looking at a build in the near future, although on an AMC Gremlin, and will be looking for a Jeep 4.0 to build a stroker.
LOL ... after all these years I still got that Edelbrock aluminum cylinder head sitting in the Box and that intake on the Shelf and still haven't got around to installing it. It's on the list. There's no reason it wouldn't work.
+martinbuilt My jeep is also. I think i am going to start getting all the pieces and plan on parking it so i can do it. I love what you have done with yours. Your my go to for knowledge. Great videos
Jaime Sustaita the idea is to improve the airflow anytime you can make a smoother air flow path you will gain horsepower. Of course this is only one step next would be to Port the heads improve the exhaust system and air intake system.
+Joshua Doustou (jdsupa15) The gasket I used to port match (intake/exhaust gasket) is one that I made. In my opinion is the best intake/exhaust gasket made.
+TruthWarriorFilms This reduces the air turbulence from intake to cylinder head. This would beneficial with other modifications. Like CAI, header, free flow exhaust etc.
+Jason Finlaw It would be fun to do dyno runs for all the modifications to see what work and how well it works, but its not in the budget. I doubt I'll see any mpg increase .
+martinbuilt theoretically it should be about 2+hp/3ft lbs. unless it creates more turbulence before the cylinder. I understand the budget, that's why I read and watch videos first. lol
I don't think you're entirely getting it I match the intake ports to the Head because they are smaller than the cylinder head. I used the intake gasket to transfer from the cylinder head to the intake manifold. The only reason I made my own gasket is because there was no gasket out there that match the cylinder head perfectly.
Honestly you are not going to realise much of a power difference I found it's better to just cut some gasket material and fill in the gap or fill in the area with some silicone gasket.
The gasket really didn't have much to do with it other than it was a means of transferring the info from the cylinder head to intake manifold. The reason I did this was because of the mismatch from intake manifold to cylinder head.
This really has nothing to do with using the gasket after he's done. He is using the gasket only as a template/stencil to port his airways on the intake manifold, so they match his cylinder head. Its a cheap gasket that when used to do what he did, is a great and inexpensive way to match your ports for a better airflow for more horsepower, torque, and throttle response. Try only commenting when u actually know something on the subject at hand, instead of being a smart*** in a comment that only makes u look dumb.
I know this is 6 years ago, but is still very valuable info. Especially appreciate the reminder to not over cut. Thank you!
Thank you, glad you liked it and found it helpful.
It turned out the way it should have come from the factory. It looks almost artistic.
Love the videos. I plan on doing this. I recently got the 7120 head that I will also be porting and polishing while I’m at it I will upgrade the rest of the top end with new injectors and bigger throttle body
Just a helpful tip I use a regular tip sharpe marker - red,blue or green to mark where material needs to be removed . some time it's hard to see a scrib mark
Good idea, thanks for the tip.
That sounds like a good idea, then if you changed your plans, you could just clean off the marker with some solvent.
I remember reading that the sizes were mismatched to keep the pulses from back flowing into the valves. They had dynoed before and after. The hp was higher before the port match.
Yes please lets see this article
Horse hockey ; any time you reduce turbulence by matching things up you increase the performance.
I was told by an old time engine builder, that this style of port matching most likely would gain several foot pounds of torque in the mid rpm range, and should also have a improvement in throttle response. But such as Martin said in his video, I was told that it is best to leave about 30 thousands of material around the edge of the gasket port holes to help with turbulence and to also help prevent vacuum leaks..
I want to see it running and a dyno results please
Hey Martin, Thanks for another great "How-To" video. Great job!
Forgive me if im not getting this right but you just got a blank piece to make your own gasket basically bolted it to the cylinder head to keep it from moving then got say a box cutter or a exacto knife and started cutting the holes to the exact size of the cylinder heads correct
I would love to see your jeep with 5.7 hemi engine, I'm sure you can do just about anything with your knowledge and skills, you're very intelligence man. Love your videos.
Wow thanks ... I appreciate that
Was it a very noticeable change? I'm installing the s&j 4.7l stroker and will be doing this with the throttle body, the intake of course, 12 hole fuel injectors and the ripp coil mod with a header
looks great. I'm excited about seeing your Jeep running with it
isee the material you bought, i guess you yourseld did the cut out. How thick should it be for the manifold? valve cover, head gasket?
how did you make the gasket?
what measures did you use?
i like all the modifications that you have done to your xj, congratulations, you are an incredible xj owner
Does port matching make enough difference to do it
Martin do you sell a line of gaskets you made?
how's the performance after the install? Thank you
+tk106
I don't know, as I haven't installed it yet. I have the new Edelbrock cylinder head and was going to change the intake when I change the head. Even if I had changed the intake I don't think it's something your going to feel. The only way your going to see the difference is on a dyno.
Love the videos man. I've been watchin them for a while now and it inspires me to do more of these mods on my xj. I have 6.5 long arm lift on it and I will be doing a lot of the same things you have done to yours, because of you. Thank you :)
Thank you I appreciate that..
HI, Can you tell me where you got the gasket material and does it do a good job.I am not liking the leaks I get I have tried many brands.thank you Matt
If you have tried many brands, & 1 of those is the Fel-pro thats the higher end/quality 1. I'd make sure u bolting all the intake and exhaust bolts on correctly in the correct torquing sequence and correct torque value. When my exhaust manifold cracked bad, I used the Fel-pro 1 on my 1998 Jeep XJ. I have 4.0L in-line 6 in it too & used the Fel-pro when installing a new header instead of manifold and upgraded the engine mounts(main reason most the exhaust manifolds crack/not just heat). I did the bolts/nuts for mating the header and intake in the pattern my Haynes manual said to and to the torque value it said. I have 55-65K miles on it since then and no exhaust leaks.
So now you should be able to honestly say what this intake mod actually achieved if anything.
Please can you state if worthwhile
Do u have dyno numbers before and after to see if it's worth doing
no, I don't
I'm totally doing this to my XJ I dont care if it only gives +0.25hp. Its free. I'm doing it.
Ok thks, i well definitely do that to my 94 jeep Cherokee 4.0, , also thks for the quick response.
Martinbuilt: what is your thoughts on Denso 12 hole injectors on the 4.0 L with the 68mm TB ?
I personally haven't tried it yet on my 4.0 but I am currently running the Bosch 280156161 that are 12 hole that work well.
I think the Denso 12 hole injectors may be a little too much for the 4.0...
So this video if for only if youre adding a better intake right? No need to do this if youre doing a motor swap and keeping the same intake?
Not necessarily. The mismatch between intake and heads pretty much exist on all 4.0's
And howd u get all the aluminum shavings out of the intake manifold
Lots of water, simple-green, degreaser, parts cleaner... or a hot tank are all good options that work well.
So the manifold now matches the gasket......great job but does the gasket perfectly line up with the inlet ports on the head?
I might do this on my ZJ.
I first made the gasket match the head then transfer the gasket to the intake manifold, so both intake and head match perfectly.
martinbuilt
Ahhhh, that explains it, thanks.
Hey bud. I know that this is a 5 year old video, but it is the first time I have seen it. I heard you say that you made that manifold gasket, my question is, did you make it completely from a blank piece of gasket material? Or did you modify a gasket that you purchased? Either way, if you made it from scratch, what did you use as a template? Or if it is a modified version of a purchase gasket, what brand and part numbers is it? Please answer if you receive this memo, or make another video explaining these things. I am very interested, and I'm sure that many other jeep 4.0 folks are also. Thank you..
Yes I made it from scratch and I use the method that I show in this video to make the temp plate for the gasket. ua-cam.com/video/txCBBO_mI1Y/v-deo.html I made the gasket from the cylinder as those ports are large then the intake.
Does it make power. Did this to my old 78 caddy back in the day but don't know if it made power ...
These kinds of mods can only be seen on a dino.
Any improvement noticed? I've got to swap my Jeep engine and thought I'd make some improvements along the way. Wish there was a way to get a modern crossflow head on there.
I haven't installed the intake yet. I also have the new Edelbrock cylinder head and was going to do both at the same time. I matched the intake to the new cylinder head.
Looking at your intake reminded me I wanted to hack up a couple intakes and make 1 larger intake with 2 shorter paths to the TB for all 6 runners, to make a 3 stage intake. Long for low rpms, shorter in steps based on rpm. It won't make more but it will shift the tq if I do it right : )
why? just get a offenhauser 4 barrel intake and throttle body with injectors. The injectors are batch fired anyway and if your boosting then what he did is more then enough. just a larger valves and a voodoo cam will free up 100+ hp
a 100hp?....a 50% increase from cam and intake?.........doubtful.
sorry to revive an old post, my cousins and i use to buy old junk vehicles(mostly trucks) and just port and polish the heads and intake and we got big gains. so much so it was a wow factor for a "free" mod. defiantly worth the price of a few gaskets.
Does any work need to be done to the head, such as removing any material, like what was done to the intake?
He is matching his heads ports to his intake. The gasket was cut out from the heads ports, so is like a stencil or template of his heads ports when he puts it on his intake and removes the metal from those ports. Which now makes them "matched ports" like the title implies, so no he doesn't have to remove material on the head. I believe he said the head is a new Edlebrock head so definitely don't remove any for multiple reasons like warranty, already how they need to be for good performance, Edlebrock has done R&D to get the part right so y fix whats not broke, and etc. If factory I guess he could remove some, but then u have to remove it from the block before doing that so no metal shavings get in there, & to clean out the metal shavings. Really not worth it vs just matching the intake to them and doing what he did then polishing them up for smooth air flow.
Great video. You didn't give any info as to how you made the gasket pattern. Will you please explain ?
Jim Miller you lay gaskets an surface that you want to match and take brass hammer and tap gasket around the edges. Cut out marks or use some heavy paper in the same manner then trace to gasket
Well, how did you like the edelbrock head? (And what casting did you replace)
I let you know as soon as I install it. It's been sitting here in the box now for 2 years or more. I have the 0630
when will you do the eldenbrock head, I'm curious about matching ports also.
So thats a hand cut gasket? based off the cyl head? im building the 4.6 stroker
yes it is. I matched it to the Edelbrock cylinder head
I WANT THAT CYLINDER HEAD SO BAD! Sadly it costs as much as two of my XJs...
Nice job 👍
Thank you! Cheers!
@@martinbuilt You're welcome :)
Where can I find this gasket
this mod doesnt change the mixture at all? is a better flow mod with no consequenses?
The mod is basically designed just to help improve air flow from the intake to the cylinder head. If the engine pulls more air from this modification the ECM will easily adjust the air fuel ratio.
@@martinbuilt thx for the reply, thats exactly what i was thinking just a fuel trim mod by the ecu,cheers
if I have a 4.2 can I put the 4.0 head on it and then change it so It will receive the 1999 beautiful fuel injection or will it fit right up to a 4.2 head ?
IIRC.... their are water jacket hole differences ..... IIRC again, the 4.2 has more holes
but i KNOW it can be done.....need the right gasket for sure (cant remember if ya need the 4.2 orr 4.0 gasket howeverr)
should be a lot of info about this online
intake flow is only as good as its narrowest point. Grind the port till your blue in the face, if its narrow deeperinside.......thats going to be your max flow
+matt sez and....larger inlet area is still reduced by the size of exhaust ports.....doing one and not both makes no major diff
its more complex than that. because of high and low pressure zones. Depending on the application,you need to priorise the velocity instead of volume capacity.
how much performance add???
Why not make those injector bosses smaller?
How can we get that air tool. What can we expect to pay. Will any deburring tool work?
The tool that I'm using is a Dremel with a wade
Beautiful.
Thank you, I'm glad you liked i
one word from me...excellent!
Thank You
+martinbuilt ..my pleasure Martin...;-)
you did a very good job 👍👍👍👍👍
And how thick is the gasket klingersil has a bunch of sheets different sizes
Jeep manifold is pretty open, I would assume hitting it with compressed air and just rinsing it out would be enough.
Do you or have you met anyone with the new Edelbrock head for the 4.0, and how well does it work? I'm looking at a build in the near future, although on an AMC Gremlin, and will be looking for a Jeep 4.0 to build a stroker.
+Kenneth Cohagen I have the Elelbrock head will be installing it soon.
+martinbuilt great! Please let me know what you think of it!
martinbuilt was it worth the money?
Ayy I'm doing the same build. If you're doing a t5 from a mustang, what tb do you use? Using a multipattern amc bell off a spirit for this
4,6 stroker is that a reliable engine ?
Yes, I wish I had one.
Which rotary kit did you use? And where did you get it?
+Rick Agosto I got everything at Lowes, all made by Dermal.
did it worked?
LOL ... after all these years I still got that Edelbrock aluminum cylinder head sitting in the Box and that intake on the Shelf and still haven't got around to installing it. It's on the list. There's no reason it wouldn't work.
Well put it together on good short block bro,.. We are all interested in seeing and hearing it run...
Have you thought about putting a small block LS motor in yours
+Biking&Jeeping
I haven't only because my Cherokee is my daily driver and I'm sure that would be more then a weekend project.
+martinbuilt My jeep is also. I think i am going to start getting all the pieces and plan on parking it so i can do it. I love what you have done with yours. Your my go to for knowledge. Great videos
Besides nicely matching the two togather what other benefits is there to doing that?
Jaime Sustaita the idea is to improve the airflow anytime you can make a smoother air flow path you will gain horsepower. Of course this is only one step next would be to Port the heads improve the exhaust system and air intake system.
another great video brother :-)
What head gasket is that one you used to port match?
+Joshua Doustou (jdsupa15)
The gasket I used to port match (intake/exhaust gasket) is one that I made. In my opinion is the best intake/exhaust gasket made.
Good job
Thank you John I appreciate that.
And what is the benefit of this mod? Thanks!
+TruthWarriorFilms
This reduces the air turbulence from intake to cylinder head. This would beneficial with other modifications. Like CAI, header, free flow exhaust etc.
+martinbuilt - Ok, thanks... Keep up the vids, good info.
+martinbuilt
Have you noticed any improvements?
Can't say yet I haven't installed yet. Should be soon. Not working right know so I got time.
MrHilbillybob1 I have not yet installed intake manifold. I have a Edelbrock cylinder head that I'm going to install at the same time
thought about doing a before and after dyno? maybe a mpg difference?
+Jason Finlaw
It would be fun to do dyno runs for all the modifications to see what work and how well it works, but its not in the budget. I doubt I'll see any mpg increase .
+martinbuilt theoretically it should be about 2+hp/3ft lbs. unless it creates more turbulence before the cylinder. I understand the budget, that's why I read and watch videos first. lol
So it would be best to use oem gaskets to do this correct?
Whoa Weezy
I personally have never seen a OEM gasket but that certainly could be the case.
martinbuilt ok great thanks great video
FWIW, some tool makers die would make that scribe line pop, at least for these old ass eyes!
@3:39 I would use an awl because I'm no woodworker
you are good man
good job bro
thank you
Lol have fun with that. Definitely not easier and won't gain anything over what he's doing. Plus would take a lot longer & cost a lot more.
Nice Job.....
Thank you...
Which intake is that.
sheldon bertram. that is the 99 and later
martinbuilt ok I was wondering if it will work on a 96.
sheldon bertram yes it will fit a 96 but you will need to get I believe it's the power steering pump or belt tensioner mount from the newer model
wouldnt it have been easier to trim a gasket rather than crewing up your manifold.. seems backwards to me.
I don't think you're entirely getting it I match the intake ports to the Head because they are smaller than the cylinder head. I used the intake gasket to transfer from the cylinder head to the intake manifold. The only reason I made my own gasket is because there was no gasket out there that match the cylinder head perfectly.
There's no water passages on a 4.0l jeep engine.
I was referring to the cylinder head
Honestly you are not going to realise much of a power difference I found it's better to just cut some gasket material and fill in the gap or fill in the area with some silicone gasket.
The gasket really didn't have much to do with it other than it was a means of transferring the info from the cylinder head to intake manifold. The reason I did this was because of the mismatch from intake manifold to cylinder head.
10/5/16
portiarla aumenta la fuerza
Everything Pace Setter makes is complete crap. I have yet to see anything out of that company that would change my mind about that.
can you email me? got some questions
Gasket is useless
This really has nothing to do with using the gasket after he's done. He is using the gasket only as a template/stencil to port his airways on the intake manifold, so they match his cylinder head. Its a cheap gasket that when used to do what he did, is a great and inexpensive way to match your ports for a better airflow for more horsepower, torque, and throttle response. Try only commenting when u actually know something on the subject at hand, instead of being a smart*** in a comment that only makes u look dumb.
this seems like a pointless modification