No compression after valve job still....

[Chrisf]

Hockey, how did things turn out after you changed your shims? What kind of compression readings were you getting? I am going through a rebuild and am still have compression under 100. Going to double check the timing and then measure the cam gap.

[hockey911]

Well my motor is dead right now (spun crank bearing)

If i remember it was around 150psi

[hockey911]

If you cant figure it out, remove the shim and perform a leak down test

https://www.youtube.com/watch?v=WgrfT0LFMhc

[Ghostgs1]

The K&L kit only goes down to 2.30mm, if you need a thinner one contact me. Ray

[gs11ezrydr]

Usually if you can spin the shims in the buckets by hand without much resistance most of the time they are not tight enough to effect compression while cold maybe when they get hot and expand they might. Now if you can't turn or spin them that means they are tight that will cause low compression by placing pressure on the valves. Like the other post said the clearance in very minimal. Just an old fashioned way I do a quick inspection. Then get out the thinnest feeler gauges. And check them. The feeler gauges don't lie. Got to watch with shims that are too thin they cause the bucket to make contact with the retainer and cause the valve to drop into the cylinder. Go to only the thinnest that is in the service manual shim chart to be safe. Thinner shims might get your clearance but gambling with possible engine damage. But like Ray said some of the kits don't go down to the safe minimum thickness only the Suzuki O.E.M.do. Some kits Like Hot Cams I have seen go beyond the safe minimum for certain models. Working at a dealership I see this often.