Problems with Street Intake Manifold sealing on TB side.

[laserspeeddemon]

I have purchased a JMF Street Intake Manifold for my 1g DSM. I seem to be having a slight problem with the getting a gasket to seal between the manifold and the Throttle Body. When I removed the throttle body, I noticed that the OEM gasket wasn't even touching the manifold all the way around; the hole for the throttle body on the manifold is bigger than the gasket by about 2mm. I tried using the gasket that goes on the other side of the throttle body, but it too still barely touches all the way around and still does not seal. I should note that I am using a 91-94 N/T throttle body. And I’ve tried the normal square gasket and the round one (that goes between the turbo TB and the TB elbow). Both would not seal.

To put it simply, the hole for the throttle body is bigger than the gasket itself and because of this cannot seal. Anyone else using a JM Manifold with a 1g TB? What did you use to seal the TB/Manifold?

 

[ed1380]

get a roll of gasket paper and make your own gasket.

 

[Jon91TSi]

I made a bead of ultra gray on my S90 throttle body and let it vulcanize and then installed it. No leaks up to 35 psi.

 

[laserspeeddemon]

get a roll of gasket paper and make your own gasket.

Amazing, I've worked on cars for over 16 years now and never heard of "gasket paper"....... you learn something new every day.

 

[ed1380]

Yup I make my own front case gaskets.

I've never used the exhaust gasket "paper" but I've heard mixed reviews.

 

[Demon33]

get a roll of gasket paper and make your own gasket.

I've done this for years and it works great. Get a role of gasket material from your local parts store (got mine from AutoZone), cut a piece slightly larger than the throttle body, place it over the throttle body and carefully cut it to shape with an Exacto knife using the throttle body as a guide.

 

[ed1380]

For small parts, rub some oil or greese on the sealing surface and use it as a stamp on the gasket material. Then just cut it out.

 

[mattasi]

Or do like me and laser cut them out, haha sorry guys had to throw that out there

 

[knochgoon24]

If you have a set of punches for leather, they work awesome for making holes in gasket paper.

 

[97gsxIA]

I like to use Indian head gasket shellac as well.. Just another thought.

 

[laserspeeddemon]

Well, I picked some up today. We'll see.

 

[TSITurbo95]

Mine had this same issue. I just used 2 gaskets with a little rtv, sealed right up.