1.8 stacked head gaskets?

[flyinglizard]

Boosters, I am putting a T 3/4 turbo on my 1.8 8V. I have 8/5 to 1 pistons and want to use the ABA HG.
Is the standard thing to stack two of these?
This car needs to run about 9-10#/( 150-170hp) , of boost for the Chumpcar races. , 14hrs.
All help appreciated.
Mike Ogren

[.therealvrt]

why would you stack with a low comp piston?
people do that to lower factory comp pistons to run boost

[Rod Ratio]

Boosters

I lol'd

[flyinglizard]

What compression can I run with 10# of boost? I am at around 9/1 as the head is now.
Thanks, Boosters, yeah.

[Rod Ratio]

Only 10 psi? You can run stock compression, but you're at the edge. Personally I wouldn't drop the compression more than 9:1 for medium boost.

With 8.5:1 pistons; you're well set for high boost. Frankly im confused about you wanting to run low boost if you're doing pistons. Seems to defeat the purpose IMO.

The lower compression will have a lot less power when not in boost; so you'd normally want to run some serious psi to make it worthwhile.

[flyinglizard]

The car is a road race car that runs 14hrs at a time. Chumpcar.

[Rod Ratio]

The car is a road race car that runs 14hrs at a time. Chumpcar.

Unnecessarily lowering the compression will not make it more reliable. Stronger internals will.

Stacking headgaskets will make it less reliable. Noone lowers their compression to more than 8.5:1. Ever.. 1000 HP drag 1.8t's that run 45 lbs of boost run 8.5:1.

If you want more reliability; add a set of rifle drilled aftermarket connecting rods, and arp hardware EVERYWHERE. Kevlar timing belt, etc.

[flyinglizard]

Thanks ' That was the answer I need.
Iuse one gasket and 10-12# boost.
MM

[flyinglizard]

Up date,
Got it rolling with the T 3 Merkur turbo < t bird intercooler, 9/1 Felpro 1.8 HG .
Hits 10# from 3800 to 6500,.
Feels like around 160hp?? Maybe. Hope the stock pistons last , The 2.2in small exhaust and low( 23*) timing seem to keep it cool and low boosted.
It roast both tires with the welded diff, 3rd gear and under. 4th, if it is damp. Nasty.
Should go a lot faster for the Chumpcar races.

http://forum.chumpcar.com/index.php?...turbojett-028/ pics.
MM

[billyVR6]

4th, if it is damp.

[flyinglizard]

I got the brakes and BOV to work, but now the O2 has gotten leaner.
Maybe the BOV leaks? I will plug the line today and make a pass.