Hey guys after a long time im finally building up my a12 turbo motor. I originally bought it carby turbo. Atm im replacing a few things. Im using a duropro gasket kit. Im not sure if the headgasket is good enough though? Im using a standard bottom end and a h89 head. the heads at the machinist getting faced, pressure tested and im using Stewart Wilkins double valve springs. I am also going to purchase arp head studs as well. I dont expect to reach 280hp but I am interested to see what I can get out of a pretty much standard a12/h89 combination. The carby turbo probably will go back on untill I can save some more for efi. Doee anyone have any advice or positive input? thought it might be a good idea to ask :p

I used Durapro head gaskets up until very recently. With the ARP stud kit, it will be fine. Re tension it after a bit of a run tho.

Good to know :). Now my next question is this a12 had a 1000 std gearbox attached to it. Can I use the flywheel still? Im pretty sure the 60 series box wont match the 1000 clutch but I thought 1000 flywheels were lighter. Do a14/a15 clutchs fit 1000 flywheels? Or does it require machining?

Ok many searches and I read I think from dodgeman that there is machining and drilling to use a a10 flywheel with the later clutches so I might go with a standard a12 flywheel and maybe a a15 vanette clutch? Im using a 60 series 4 speed for now. Also can anyone tell me what sort of turbo this is? Its a bit odd

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Not sure about that turbo mate any numbers or letters stamped on it? Im sure there are a few guys here that have done this build before and could give you an idea of what hp to expect. My advise after building a similar setup with an A14 is don't get tempted in running to much boost. keep it low to start and the other thing is with your head gasket, try and get a copper head gasket made.

My standard bottom end lasted a good while, till i burnt the rings. now i have a complete head and block re built for turbo with EFI and she goes like a dream.

Good luck with the build.

I'll be using ARP head studs to try keep it together :p. HP I'm not bothered. I have a minimal budget, a nice 1200 ute so I gotta try make the most from available parts :/

OK today sourced some r32 gtr n1 turbos. apparently theese have steel wheels not ceramic. Not sure what psi they safely put out but at 200 a pair I couldn't say no :p

even the Ceramic Garrets are ok to about 11psi, they get a bit sad over that,
so you steel wheel ones should be fine,
best just to grab a 12 flywheel, take a look at what you can find, they do vary a lot with weight,
hunt for a 1200 box, the flywheel will fit in, the 1000 box needs a modded flywheel to fit in other than the b10 one....

I have a 60 series 4 speed ATM. I'm running a stock flywheel and just about to source a clutch. Australian clutch want $190 for a heavy duty std type clutch which I think is a good price