you are confused this time then, as you ment to say blow-through

i can never remember if its the turb that blows or sucks or the carb that blows or sucks, but thinking about that a carbs not really gonna blow is it

umm injector and twin carbs, thats getting tricky

what is standard compression for an a-15 no mods?

maybe an a-14 head is the way to go, might have to sell the GX head (ever since i ran out of money this month ive become tight and started wanting to sell stuff )

whats the prob with fat gasket if made from metal??
could i use gx head and fat gasket as the gx has good flow and big valves and double valve springs

Yep, copper gasket 2mm with GX head will do good, but if you want to start running boosts from 15-25 psi you'll have to modify the block and insert o-rings around the cylinders to keep from blowing the head gasket

a fat gasket is more likely to blow out around the cylinders, but if its made of metal or copper the problem becomes oil and coolant sealing. Its a catch 22 situation.
Metals good and usualy seal but 3 months down the track they tend to be more prone to leak.

3 months aint long

what about three gaskets cork/metal/cork or is this getting rediculous

whats o-ringing worth roughly?, do you still use a gasket with this and therefore can change compression with fat gasket? will it last shlong time?

Can do as you'll have to fix it again, just seal it with a copper sealer,
with o-ring you can use a gasket it just make it seal better under pressure

this thread has been stolen by the king bunny (ME)

sorry, madtimmo

on my engine i o-ringed the block and will use a standard gasket.
and the dish in my a15 pistons has just been enlarged so it is centralised, and this is how my comp was reduced