INTAKE MANIFOLD GASKET
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Tuned
Joined: Oct 2020
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INTAKE MANIFOLD GASKET
Which intake manifold gaskets have you had the best luck with,
I am running afr185 heads and a edlebrock performer rpm intake and I am not having much luck with the intake staying sealed to the heads.
So I would like to know what your experiences are and what worked for you
Thanks
I am running afr185 heads and a edlebrock performer rpm intake and I am not having much luck with the intake staying sealed to the heads.
So I would like to know what your experiences are and what worked for you
Thanks
Cargo Master
Joined: Oct 2020
Posts: 2,675
Likes: 784
Most of the time on an engine where there's water going through the gasket I've had the best luck with a gasket that has a steel core. A stock replacement gasket if it will fit the ports is the best. But something like the Fel Pro that have the "S" suffix in the part number seem to be ok. Cometic makes some gaskets that are not cut from that black fiber stuff but a different material that's much tougher. Those can work well too. In a situation where the intake is dry the high performance gaskets seem to hold up better.
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Tuned
Joined: Oct 2020
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Thanks for the reply
the issue i am having is not water port related, it is keeping the intake ports themselves sealed. I have tried 3 different types of gaskets (all have been Felpro gaskets) i am currently running the reinforced 1262 set. And the same thing keeps happening they lose thier seal and sucks oil from under the intake.
i do have a set of cometic gaskets ordered, they should be here today.
I have read alot about this on the internet, it seems to be a fairly common problem. But so many either give up or they just don't say what they did to solve the problem
the issue i am having is not water port related, it is keeping the intake ports themselves sealed. I have tried 3 different types of gaskets (all have been Felpro gaskets) i am currently running the reinforced 1262 set. And the same thing keeps happening they lose thier seal and sucks oil from under the intake.
i do have a set of cometic gaskets ordered, they should be here today.
I have read alot about this on the internet, it seems to be a fairly common problem. But so many either give up or they just don't say what they did to solve the problem
Cargo Master
Joined: Oct 2020
Posts: 2,675
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The water causes them to get mushy and move around over time, sort of squish out.
I've had a similar problem on a 289 one time and the problem was with the intake manifold. It was not machined correctly and it was tight at the top and loose at the bottom which caused it to suck oil into the ports. A Ford like that is easy to check because the intake faces are 90 degrees apart. A square can be used to check the intake just to make sure while it is off of the engine.
I've had a similar problem on a 289 one time and the problem was with the intake manifold. It was not machined correctly and it was tight at the top and loose at the bottom which caused it to suck oil into the ports. A Ford like that is easy to check because the intake faces are 90 degrees apart. A square can be used to check the intake just to make sure while it is off of the engine.
Cargo Master
Joined: Oct 2020
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Another thing to check would be to make sure that the intake can sit down solidly against the intake face of the head without interfering with the bolts. Even though they go straight down this can sometimes happen.
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Tuned
Joined: Oct 2020
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I will check on that too, I have set the intake on to check the China wall clearance, but I did not check that.
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Lead Driver
Joined: Jan 2019
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From: N.W. Alabama
How long after new gasket does it start, have you attempted retorquing after a few heat cycles? My water pump/timing cover gasket would weep after first install, and kept retorquing, a few times it finally stopped.
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Cargo Master
Joined: Mar 2007
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I would think the two gasket surfaces are not parallel to each other and until they are, then it will always be an issue. I understand that gaskets are there to take up minor clearance issues, but if you got to tighten the manifold up multiple times, something ain't right.
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Tuned
Joined: Oct 2020
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I agree something is not right. All of the parts are new (i know not does not mean good anymore).
the gasket mating surfaces are nice and flat i did check that. Before removing the intake again i am going to run a borescope down the intake runners and see if that gives any clue as to what is happening
the gasket mating surfaces are nice and flat i did check that. Before removing the intake again i am going to run a borescope down the intake runners and see if that gives any clue as to what is happening
Cargo Master
Joined: Mar 2007
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Flat probably is not the issue. The gasket surfaces are probably not parallel with each other. The gasket can only crush so much and if the angles are not the same, all that tightening would not help. Gaskets can probably handle slight differences. Sealer is just a band aide.
FTE Community Team
Joined: Dec 2023
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From: sussex county, nj
dumb question here,yet something i ran into in a similar issue, sucking oil in from the valley,
the fix was matching the gasket to the aftermarket head and intake port which in my case was edelbrock to match the 2.10 in. x 1.28 in. Port
the fix was matching the gasket to the aftermarket head and intake port which in my case was edelbrock to match the 2.10 in. x 1.28 in. Port
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Tuned
Joined: Oct 2020
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Upon further research and pulling the intake off to reseal. I now do not think it was the intake leaking and causing the oil consumption. The heads I am using the intake rockers studs are threaded into the intake runners. I did not check this and assumed they where blind holes. Thread sealer must be used when installing these studs.
when I received these heads I didn't get any paperwork with them,but if you go to afr's website this information is there.
I did remove the studs and reinstall using thread sealer. Hopefully this solves the problem.
Thanks for the responses
when I received these heads I didn't get any paperwork with them,but if you go to afr's website this information is there.
I did remove the studs and reinstall using thread sealer. Hopefully this solves the problem.
Thanks for the responses
FTE Community Team
Joined: Dec 2023
Posts: 8,788
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From: sussex county, nj
thank you for that post, it's going to help others by reminding people to fully read the instructions. self included . since i use mostly edelbrock sets which are fully assembled,
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