Anyone suggest what haed gasket to use?
 

Hi can anyone one tell me what head gasket i should use on my Car.
2004 2.0 Turbo

• Nitrated crank shaft,
• Mahle forged conrods and pistons,
• ARP head studs,
• ACL race bearings,
• Parallel fuel rails
• 850cc injectors,
• Full decatted stainless exhaust,
• 321t turbo
• Gt spec tubular exhaust manifolds,
• Spec C inlet manifold,
• Hybrid front mount intercooler,
• K & N cone filter,
• Bosh Fuel Pump,
• Simtec ECU - antilag activated,

Currently has comtec head gaaskets, but think they are either on the way out or it is streching the head bolts when boosting high. Water bulbing over on a bit of a thrashing but other than that normal driving is fine.

Any just a biit confused with the different sizes 0.6mm 0.7mm 1.1mm etc.... and makes?
Thanks Guys and Girls

you don't have this one on ebay currently do you?

Anyway u need to calculate the gasket correctly, you need to know the cc of the swept volume of the cylinder to get the correct thickness gasket.

The link below wil give u more info.
http://www.chainganger.co.uk/Page2/Page2.html

I am sure whoever built the engine to this spec will have done this already so a micrometer to measure the current gaskets should help.

oh and i highly doubt a cometic gasket would fail, it's more than likely the head bolts not holding up, best get some ARP or cossie head studs.

Derek

It already has arp head bolts.
and yes it is the one which was on ebay.

speak to dave @ api he can advise & supply!

arp,s seem to do this a lot from 425bhp + depending on style of usage. as in lot thrashing and track days.

i personally would not use again and would advise minimum at this level be cosworth 260,000. high tensile studs. or as RCM have always advised and done the 14mm stud conversion

arp,s seem to do this a lot from 425bhp + depending on style of usage.

Quite so, " Depending upon style of useage" .

We just built a fresh 2.1 stroker for Danny Clark which is currently running close up to 600 hp on 20% Meth. Using our own 11mm head studs that we make and sell. No problems are envisaged and l would be happy to have used ARP if I needed.

Danny's previous engine: a steel forged STI Vers 4 based 2.5 running 20% meth made 550 hp for over 3 years reliably, before it just plain wore out.

BUT when we stripped it down we found that it had been built - By US - with original head bolts................. Never a hint of head gasket blow or anything.

The original build spec. didn't allow for them to be fitted, as it was originally a road car to make 430 or so. And we just plain forgot through all the upgrades that it was on bolts not even ARP studs.

Lucky ?? Nah not if you build 'em right and pay attention to compression etc.,

David APi

Thanks for the advice. Going to pick the car up towards the end of the week.
Anyone tell me wheres best for mapping in the northwest?

Thanks for the advice. Going to pick the car up towards the end of the week.
Anyone tell me wheres best for mapping in the northwest?