This causes bad spool????!!
 

I have had really bad spool lately ...found a loud exhaust leak that I believed was pre turbo... Turns out 1outlet bolt snapped and 2nuts fell off on the turbo to dp flange. The exhaust leaking here hurts spool that bad??

Sorry for the typing ... On my iphone
Attachment 195988

yes, looks like you might have leak pre turbo as well...why that gasket?

pre-turbo leak = big affect on spool
when I warped the flange on mine even though it was a tiny little leak I lost a whopping 800 rpm worth of spool.

I USed the gasket because I had it sitting around ... Most of you don't run gaskets? I know pre turbo will murder spool, but how is the Mani to dp flange effecting it that bad ?

back pressure.

I am taking the turbo off tomorrow and replacing the hardware. Which if any gaskets should I run?

As usual, thanks for the insanely quick response.

if both surfaces are true, none.

Gaskets are just asking for trouble, and are totally unneeded.
If you cant keep it from leaking without a gasket, you need to go find someone with a mill.

Yeah if it leaks I'll just bring it to work and resurface it

Even those real thin metal gaskets?

I vote you get an inconel gasket made by Twins Turbo and get the trackspeed stud kit. Yes, all that is a lot of money. No, you won't have to work on it again.

The TrackSpeed Stud kit does not come with the exhaust studs as far as I know, and if anyone gets them before me I will tea bag their face.

As opposed to tea bagging their ... what?

You clearly need to find the image of the black dude shoving his nuts into a chick's ass :laugh:

had this happen a couple times, its a pain in the arse

if you downpipe does not have a brace to the block try having one welded on will stop any unwanted movement

How does having a layer of inconel (very hard) provide a better seal than two machined flat surfaces? Usually a gasket is of a less stiff material, which gets "squished" into nonconforming surfaces to create a seal. However I can definitely see how an inconel gasket would be superior over a conventional gasket in regards to bolts loosening. I'm not saying it doesn't work, but what am I missing here?

Normal gaskets will just disintegrate, cause a big exhaust leak, and warp the flanges. Inconel gaskets shouldn't cause any of that, but they still aren't necessary if both surfaces are flat.

Exactly. This.

Just an update: I fixed the problem on sunday. I pulled the turbo off and replaced the hardware. The mani to turbo gasket wasnt leaking.

I am currently running no gasket on the dp at all.