M30 head gasket question

Post Wed Oct 07, 2009 3:01 pm

Hi all
just a quick question. I have a layered metal headgasket which I'm putting on a M30 which I will be supercharging but not boosting above 0.7bar.
Should I go for a standard thickness or should I take one of the thinner layers off when changing it?

Cheers
ben

Post Wed Oct 07, 2009 3:31 pm

If it where me i would leave it well alone.

Post Wed Oct 07, 2009 4:14 pm

But iv rebuilt the engine? I need to replace it.
Do you mean leave the gasket thickness standard?

Post Wed Oct 07, 2009 4:56 pm

STiBen wrote:But iv rebuilt the engine? I need to replace it.
Do you mean leave the gasket thickness standard?

Yes sorry i meant leave the new gasket as it was intended

Post Wed Oct 07, 2009 5:05 pm

Ah lovely. cheers for that I'll get building now

Post Wed Oct 07, 2009 8:09 pm

7psi boost is fine with standard M30 stuff, well has been for me for a couple of thousand miles, a track day and seven runs at the 'Pod.

I'd leave gasket well alone too.

I've been told from several sources that a standard compression M30 can deal with a bar of boost!

I'm guessing that's with ARP or similar head bolts or studs, I'm not sure I'd go that high myself though!

Post Wed Oct 07, 2009 9:31 pm

Well a bar is good news but I won't be going that high. I'll be staying at 0.7 bar me thinks. Iv also been told that standard head bolts will handle quite abit.

Started building the head today what a ass that was.

Post Wed Oct 07, 2009 9:49 pm

STiBen wrote: Started building the head today what a ass that was.

Yup, as soon as I find another head I'll be building my 3rd

Keep up on the pics, enjoying your build thread

Post Wed Oct 07, 2009 9:58 pm

Blimey your 3rd. Do they go alot then?

Ya I'll pop some pics up as I go.

Post Wed Oct 07, 2009 10:04 pm

No, their known for being a really strong engine, apart from the 2 I have had so far

had 3 rockers snap (you won't have this problem!) and the latest one is a cracked head I think...

Post Wed Oct 07, 2009 11:52 pm

Hmmm cracked head. That's something i'm worried about. Should be ok I hope. As for the rockers I have shelled out for so uprated ones so that HOPEFULLY won't be a problem.
Was wondering how this M5 cam is going to do though.
Oh time will tell.
I'll get some pics up soon for the head rebuild on my build thread.

Post Thu Oct 08, 2009 12:34 am

It´s going to be pretty hard to put a M5 cam in a M30 engine.,

Post Thu Oct 08, 2009 7:33 am

It's done. fits and spins.

it's a cam from a E28 M535. Sorry should of explained more.