when I used to build engines I used Dbilas valve springs for above 7000rpm or left them standard for engines not revving past 7000 rpm
so three years later the cylinder head is finally finished :LOL:
head had a light skim to clean it up, they also did 3 angle valve seats and lapped in the valves
brand new OEM valve stem oil seals fitted
Head is now for sale, comes with port matched inlet manifold - £350 +...
A quick round up of spec, probably a few things missing.
Full suspension refresh with new OEM wishbones, track rod ends, bolts and OEM hubs.
Alloy front uprights and steering arms + rack raiser plates.
Quantum shocks with 550 + 425 springs.
Adjustable front anti-roll...
is the EGR blanked off ?
have you cleaned the throttle body ?
the wiring can break on the air intake sensor, so worth checking that too
ps: standard vauxhall triple electrode spark plugs are the best for the z22se or Bosch 4's
could be a good time to fit a F23 or go 6 speed, which would be cool in a mk2 astra.
The M32 is not as weak as people say, fill them with 3 litres of good oil and they are fine, but they don't like abuse. It's basically the same size as the F23 box.
I still regret getting rid of my champion...
The z22se engine family loves mods, it was restricted at the factory for being too close to the z20let engine power
Weak points - always keep an eye on the oil level, the dipstick is useless at measuring the oil level;
be careful when tightening the spark plugs, over tightening them can cause...