m20b27 valve adjustment

[5Toes]

No, the german guys do .012 COLD

[timninja]

sweetbabyjesus!thatd been good to have known about haha

[timninja]

Lol as euro as id like to be,my engine internals where produced for usdm use so im torn here

[timninja]

My pair are dropping,hope one of you guys have a spare head;)
I'm somewhat warm so im going .012
I'll let you guys know how she runs when im done,..if it does

[5Toes]

Dude dont sweat it... .010 is factory spec. The germans do .012 because they believe it makes the performance better

And the euro spec e30s have same engien internals as usdm

[timninja]

Valves didn't change and I found my new head gasket is fucking leaking..hello 325e striker..

[timninja]

Stroker

[jlevie]

Dude dont sweat it... .010 is factory spec. The germans do .012 because they believe it makes the performance better

And the euro spec e30s have same engien internals as usdm

If that is their logic, it is going the wrong way on multiple counts. Tighter valves yield slightly more valve opening which results in slightly greater mass flow and thus higher performance. And, in my opinion, tighter valves reduce impact forces on the rocker and lessen the chances of a broken rocker.

I would not do this on a well used head, but I set the valves on my cars tighter. I use a cold setting of 0.006" on the intakes and 0.008" on the exhausts. But those engines have freshly rebuilt heads. The race car gets a head refresh every three-four years when the leak down numbers go above 10%.

[timninja]

Dayum,redoing my valves again...^