hey guys, very new to the site so am not really sure if this is the right spot.

i have a question regard options for a head for my 4l. its a currently sitting waiting to be wired up into a xh. its putting out 270rwkw's with a s**t tune and turbo. i want bg power eventually and big skids but i have no idea where to go or who to talk to so any help would be much appreicated.


thanks

More info mate.. What turbo? Will your fuel system support it? Your tranny won't last long.. What ecu etc.. Head work will give you more power no doubt. But what exactly did u want to no?

Your engine puts down 270 with a stock head?

What else have you done to it?

I think 300-350 is the limit on a stock bottom end,

EDIT: disregard first line. I missed the turbo part lol.

Last edited by Lowlane7 on Mon Jan 24, 2011 10:52 am, edited 1 time in total.

Its called more boost. When people arent soft and run more than 10psi they go pretty good.

I'd be going to a place like Jim Mock Motorsport or CMS for a head and cam package. There arent many places that do heaps of work to the ohc engine from what I can find.

Frittz's JMM head and cam turned out really well. I think he has replaced the cam with a surecam grind now though.

Ill likely do the same if I ever get around to it. How much power are you after? What turbo setup and components are you using now?

I competely forgot about this. :p

Its currently running standard head with forged mahale pistons, au crank and rods. Its got some s**t 800hp ebay turbo and a microtech. No the fuel system will need upgrading and i plan to do that but i would like to sort out the head first then worry about injectors etc. I have already got a tko600 and twin plate plus a custom massive tailshaft. i would like about 400 kilowasps once i change the fuel setup and get a t04z. and a 9 inch.

yes it doesm ill show you the dyno sheet if you like. It has lots off boosted hahah. The guy that i brought the car off who did the bottom end has mad it super low compression so its fine for boost. I understand this to be the reason why it doesnt do much about 4.500RPM, although i dont know.

Its basically a s**t atm that needs alot of love but ill get there eventually.

well i sent jim mock a email a few weeks again and i didnt get a reply so i will probably have to go else where.

give joe from cms a call.. he is a site sponsor and im yet to hear a bad thing about his work