Tired of blowing gaskets. It's probably due to the fact that I can't tighten the rear bolt enough (clearance issues). It would seem that once the bolt loosens slightly, the gasket blows.

Anyway, this is becoming an expensive trend. I'm looking for a better alternative. Please post up what you're using.

 

I'm using this one:

http://www.roadraceengineering...s.htm

Never had any leaks, even on my old SOHC setup and manifold with slightly warped flanges. I guess it's made by Turbonetics.


Modified by inspyral at 9:30 PM 6/3/2008

 

aren't there some people running without em?

 

44mm ftmfw!!! no problems for me haha

 

Is your manifold flange warped at all ? Some fabricators don't sand down the surfaces.

 

no gasket. I've ran no gasket from manifold to turbo, turbo to down pipe, wastegate to manifold, wastegate to dump pipe and never had problems with leaks before. True surfaces are win.

 

38mm wg here. No gasket. The only gasket i run is manifold to turbo.

 

44mm here as well... no gasket here.

I use to run the fire ring gasket though on my 38mm, hit or miss some would blow out and other would last for a year.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by twkdCD595 &raquo;</TD></TR><TR><TD CLASS="quote">44mm here as well... no gasket here.</TD></TR></TABLE>

v-band ftw

 

Better off running no gasket if the flanges are not warped at all.

 

vband's FTW.

On my old setup, i ran no gasket on my 38mm

 

u should run some kind of gasket imo. my friend is having this trouble on his car and he has a lil slower spool up because of it.


personally i switched to a 44mm and v band is the ****

 

Ive never run any gaskets between my turbo and manifold or manifold and wastegate. The one time I tried a gasket between the mani and wg it blew out never again...

 

when i had a 38mm i just made sure all the mating surfaces were flat on the wg neck by putting it on a plain sander for a while then used atp metal gasket, never had a problem.

 

Damn, not a single vote for "Tial gasket"... I guess I'll go sans-gasket once this current one inevitably blows.

It just seems weird not using a gasket because the mating surface on the WG isn't flat; the circular region around the opening is elevated slightly. I figured it would be easier to over-tighten the bolts and warp something without a gasket...? Maybe not.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Legion &raquo;</TD></TR><TR><TD CLASS="quote">Damn, not a single vote for "Tial gasket"... </TD></TR></TABLE>

my parts have been on and off so many times, its just easier to order a bunch from ATP and use what i know works, im not saying the tial gasket doesnt work, i honestly dont even remember what it looks like but i know the ATP one works and pretty sure cost less...

 

im running no gasket on my 38

 

SCE copper gasket from summit racing, been using the same one for years, I will be using a 44mm gate soon, so I guess no more gaskets.

 

Last WG flange I welded on I had to really cook, so it warped a bit. I sanded it flat with rather fine paper and a block, then used a flat SS gasket, and its been fine. The key is to keep the bolts from loosening, which requires a good spring steel lock washer. SS lock washers are actually weaker. Even though spring steel barely rusts, the little bit that does helps it all stick together.

For a constant blow-out, I'd try to flatten the flange, then try the composite/firering style. BTW try sanding the edges of the flange (the thin bolthole ends) to make it very slightly convex. That way it really clamps the WG to the flange.

 

i used a copper gasket on the downpipe side, should i have not used one at all then? there was an oring that came with my WG, its a metal oring that fits in the grooves between the wg and the exhaust manifold, but with it the flanges are not flush now, im guessing the oring makes that seal? do i need this oring?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by accord99power &raquo;</TD></TR><TR><TD CLASS="quote">i used a copper gasket on the downpipe side, should i have not used one at all then? there was an oring that came with my WG, its a metal oring that fits in the grooves between the wg and the exhaust manifold, but with it the flanges are not flush now, im guessing the oring makes that seal? do i need this oring? </TD></TR></TABLE>

yes, put it on!

 

This is great stuff.. you can get it for a caulking gun too.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">for 4-cylinder, turbocharged or high-performance engines.</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HiProfile &raquo;</TD></TR><TR><TD CLASS="quote">For a constant blow-out, I'd try to flatten the flange, then try the composite/firering style. BTW try sanding the edges of the flange (the thin bolthole ends) to make it very slightly convex. That way it really clamps the WG to the flange.</TD></TR></TABLE>

I'll try the spring washer idea. The blowouts are likely due to the bolts loosening (the flange is already milled flat).

 

This pic shows what I was talking about a few posts back. Note the metal ring that protrudes below the flange surface:




That's why I was worried about not running a gasket. Only that metal ring will be in direct contact with the flange on my manifold. This causes the WG flange to be spaced away from the manifold flange slightly. I was worried about over-tightening the bolts in this case which would cause the manifold flange to warp.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2point2 &raquo;</TD></TR><TR><TD CLASS="quote">
</TD></TR></TABLE>

Same thing i've used on all my wastegate gaskets