IMO stock compression should be ok. my setup lasted a surprisingly long time with non intercooled drawthrough 10psi and 9.7:1 comp- but it does have a fairly big cam, so compression is all relative.

You are shooting youself in the foot putting a shim in an otherwise standard engine for 10psi. decreasing your squish will rob you of lots of kW without much gain from the decreased comp/ extra boost potential.

a series bottom ends should handle 20+psi. the size of the turbo is factor as well. tiny turbo does not pt as much strain on bottom end as big turbo. makes less power.

onetwo00 who are you? where do you live? wasnt aware that there was any others other than me and grunter running forced induction. im running 150hp and it crazy in the dry!

ok you have all talked me in to it so as soon as i can get hold of and find the time i will be ditching the spacer
i will keep you poasted

RB, You are extremely fortunate that you are blowthrough so you have the luxary of intercooling. Heat is the biggest precurser to the dreaded death rattle.
Datsonovic (Or a username very like that) says he has run 30psi on a stock engine, using only water injection to prevent piston destruction.
I hooked up a window washer pump to my boost gauge today, and was surprised to learn that it pumps 13psi. In the future when i begin to power tune my blown A15, I'll be implementing a water/alcohol injection set up for sure. This will allow much more spark advance than would otherwise be sustainable. i'd expect horsepower gains to go with it.

he could intercool suck through? injectors are next to the head?

hi picko
i live in wanneroo
i met with beatie today as he lives a 30 sec walk from my house.
i should have the second engine running by next weekend.
mine is a14 with custom inj and manifold, though it is not the normal falcon throttle body. we must meet as i have not seen another a series injected before

did you do the work? beattie is coming to my house some time (padbury) to show me a turbo. maybe you can come with him

Yeh Richard's injection system is weird. Standard inlet with a t/b where a carb would sit and 'cooler plumbing welded to that. There are 2 injectors before the t/b and 2 after. Controlled by a Wolf 3d i think he said?

Its a very neat exhaust manifold though. I took a coupe of pics if your interested?

Apparnetly going to be running in a couple of weeks!