Jubilee valve adjustment

[gwoc]

Over the last 10 years I've owned a 9N and (4) 8Ns. I recently bought a well-used Jubilee.

A compression check showed fairly good compression in cylinders 1, 2, and 3. Cylinder 4 showed about 30 psi. I checked the gap between the valves and rocker arms with the piston at TDC and found no gap.

After adjusting the gap to .015 I got 100 psi in the cylinder. I just wanted to pass this along to those who may be having a similar compression problem. YMMV.

 

[showcrop]

Good for you! You are very fortunate to get that amount of compression because usually some valve burning takes place when they are not closing all the way.

 

[gwoc]

It's obvious the PO used a lot of "trial and error" methods. I don't think he was able to get it running to burn the valves.