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scottydouk

06 February 2009 07:23 PM

engine rebuilding, which uprated head gakets and head bolts use?

A mate has blown his head gasket on his classic impreza turbo, which uprated head gakets and head bolts do people use? some makes, prices and where to get from would be brilliant!
cheers

mje_wrx

06 February 2009 07:36 PM

cdf racing, top man

arp head bolts and cometic gaskets

cant remember price but pm him, he is on sn

rapid.STI

06 February 2009 11:03 PM

i got mine from RCM, there 1.6mm steel gaskets. £116 delivered, that is for both:thumb:

steviecrump

07 February 2009 12:55 AM

you can reuse head bolts.

scottydouk

09 February 2009 12:09 AM

Quote:

Originally Posted by mje_wrx (Post 8488088)

cdf racing, top man

arp head bolts and cometic gaskets

cant remember price but pm him, he is on sn

that is what im thinking, cometic gaskets and arp bolts, apparantly, once rebuilt engine and run in for a while with the arp bolts you have to retorque them!? is this true as pain in the arse to do that on a scooby.

is a standard heaad gasket thickness 1.2mm? or what would a safe thickness be to run up to 25psi on?
cheers

Slowboy Racing

09 February 2009 09:11 AM

ARP bolts only need to be torqued up once “Correctly” following the same OE Subaru pattern to your desired toque setting. You can recheck this if you like while the engine is out at a later time, but no need to head up and cool down.

Most important, clean threads, make sure the stud is seated correctly in the block, use ARP lube or similar.

Gasket sizes will vary depending on year and pistons used, MLS gaskets like Cosworth, Cometic, etc are more than up to the job assuming heads are freshly skimmed and the deck has been cheeked.

Any supplier experienced in this field will be happy to supply you all the correct install info.

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