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Head Questions 


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Posted: Wed Oct 18, 2006 9:14 am 
Tyre Shredder

Posts: 304

Joined: 5th Sep 2006

Location: christchurch
New Zealand

Krytox wrote:

All the gaskets are the same between models, but don't use an ACL or monotorque.
Use an AU head gasket (they are much better and with in theory increase compression ratio by a bee's d**k)

and most importantly, Buy new head Bolts

Everything else is plug and play!


how come the sets are marked differently at repco from 1994 onwards?



Posted: Wed Oct 18, 2006 10:19 am 
Getting Side Ways
User avatar

Age: 38

Posts: 575

Joined: 5th Nov 2004

Ride: EF

Location: Wodonga
VIC, Australia

Krytox wrote:
trust 'us' don't use the permaseal head gasket (everything else is ok)

personally i got my head from JJM.

I ended up getting a full reco 94DT head with cam, bolts, hla's seals, all for $550 (with a few trade ins)

If your to port the head... do it to a standard one, there are benefits in doing so.

if keeping your head just get it crack tested, surfaced and a quick going over... any local shop should be able to do it for about 200bux

I'm using a permaseal head gasket on my falcon, running up to 15 psi boost and over 15,000 ks now I'd have to say they last ok..
But the AU gasket is a better option as it’s a metal shim type.
One of the main reasons the gasket blow is because the Alloy head and the cast block expand at different rates. The head gasket been in the middle cops all the movement and it will eventually wear in places and loose it strength. The beauty of the AU gasket is that it is a metal shim, which wont wear like the material gasket do.

Its not hard to put the head back on yourself, If you have managed to remove it, that’s half the battle, Like other people have said, get the head checked out and surfaced, while that is been done, make sure you clean the top of the block completely, and also get the head bolt holes/threads completely clean, even go buy a tap and run it through them. It will make a big difference when you torque up the head bolts.

Good luck with it all.
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