installing performer rpm
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Freshman User
Joined: Jan 2005
Posts: 40
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installing performer rpm
I'm installing a PErformer RPM on my 390 and the directions say to not use the gaskets on the ends, fill the gap with rtv silicone, is this the way you guys would recommend, thanks for the info.
Laughing Gas
Joined: Jul 1999
Posts: 1,048
Likes: 22
From: Lacey, WA
Hi,
That is the way most do it, me included. I did not get enough silicone there at first and it leaked. Had to re-do it.
Also, most folks HIGHLY recommend using Victor Rienz MS15166X intake gaskets. Not Fail-pro.
Good luck,
Lee
That is the way most do it, me included. I did not get enough silicone there at first and it leaked. Had to re-do it.
Also, most folks HIGHLY recommend using Victor Rienz MS15166X intake gaskets. Not Fail-pro.
Good luck,
Lee
Elder User
Joined: Dec 2003
Posts: 531
Likes: 1
From: New Mexico
My machine shop, that also does a world class FE block racer, recommended that I just use plenty of silicone front and rear. Pressure in the engine even with venting, over time, pushes the gaskets out and then comes the leakage. Add extra in the corners but not so much that it is oozing into the inside. Silicone coming off and going through oil passages aren't something you'll enjoy. It worked fine for me. I even used that trick on a 351 Windsor because we all know they love to leak from the same area (front and rear of the intake).
Elder User
Joined: Dec 2003
Posts: 531
Likes: 1
From: New Mexico
OOPS, one more thing. Use plenty of alcohol on the mating surfaces so there is no oil and the silicone (Black RTV) can bond. Then, let it 'skin' for about 15 minutes so the curing process gets underway before tightening and torqueing.
Lead Driver
Joined: Apr 2001
Posts: 6,175
Likes: 21
From: Texas
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Post Fiend
Joined: Jan 2003
Posts: 8,600
Likes: 4
From: Iowa
I tried the silicone RTV after reading the Edelbrock instructions that came with my Perfromer RPM. That was on my 360. It didn't work. Oil still leaked. I used plenty. The problem with RTV is that it tends to shrink a little when it dries, then cause leaks, particularly on large gaps like the intake.
Here's how I got my intake to seal on the 390. I used the cork end gaskets, and glued them in place with Permatex Copper Spray-A-Gasket. So far, no leaks.
Here's how I got my intake to seal on the 390. I used the cork end gaskets, and glued them in place with Permatex Copper Spray-A-Gasket. So far, no leaks.
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Tuned
Joined: Mar 2004
Posts: 265
Likes: 2
From: Georgetown, De
would permetex high temp ultra copper gasket maker take care of this?
i was going to use it to fix an exhaust manifold lead, cause the bolt i know for sure aren't going to come off in one piece. I was going to wirebrush the exhaust manifold and clean the surface as best as i can before applying the permetex then apply a thick layer over the small leak in order to ensure a proper seal and a good hold, then let it sit for 12 hours and then start it to check for leaks.
i was going to use it to fix an exhaust manifold lead, cause the bolt i know for sure aren't going to come off in one piece. I was going to wirebrush the exhaust manifold and clean the surface as best as i can before applying the permetex then apply a thick layer over the small leak in order to ensure a proper seal and a good hold, then let it sit for 12 hours and then start it to check for leaks.
Elder User
Joined: Jul 2004
Posts: 938
Likes: 1
From: North Carolina
I used cork gaskets that came in the gasket set with a lot of high temp RTV. After a year and a half there is no leaks. Even though the insturctions say not to use gaskets, use them, it is guarnteed to leak otherwise.
Senior User
Joined: Sep 2004
Posts: 457
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Originally Posted by dffay
OOPS, one more thing. Use plenty of alcohol on the mating surfaces so there is no oil and the silicone (Black RTV) can bond. Then, let it 'skin' for about 15 minutes so the curing process gets underway before tightening and torqueing.
If so, yer wife may catch you napping under the hood.Mike
Lead Driver
Joined: Apr 2001
Posts: 6,175
Likes: 21
From: Texas
Guys, for a long time the debate lingered over end gaskets or no end gaskets. This thread really seems to be one-sided....Use them!
I'm sure that I will when I get back into mine. I think I even have set of the cork gaskets in the shop. I wish this thread would have happened before my last reassembly....
I'm sure that I will when I get back into mine. I think I even have set of the cork gaskets in the shop. I wish this thread would have happened before my last reassembly....
