Quote Originally Posted by strada-caster View Post
Here's my last weekends fun
reset valves: they were bang on from last year except for cyl4, .002in high
done warm, set to .010in

compression test (440 is a brand new engine)
done warm
cyl1 425
cyl2 415
cyl3 405
cyl4 435

leakdown test
done last(~ 2 hours after shutdown, was in a heated garage though), so still a warm block
cyl1 10% no noise, couldn't really tell where any air was coming from
cyl2 18% noise, air leakage from crankcase (dipstick tube)
cyl3 18% noise, air leakage from crankcase (dipstick tube), and from intake (a tiny bit)
cyl4 9% noise, it was coming from the crankcase.
wondering also if you changed also your timing belts. or you may want to recheck the timing too.

btw, i set the valve clearance on my motor at 0.25 mm (HOT)....

carbon buildup on the valves may be preventing a full seal even when hot.

hth