Ribrickulous
Veteran Member
This is more of a technical question than guidance, I'm going to reset the valves this weekend, but out of curiosity - I know a tight valve can lead to low compression readings, but can a loose valve give high compression readings?
I took cold compression on my twin yesterday just out of curiosity, and picked up 165PSI on the right side, 195PSI on the left side (!). Same pistons/rings since the rebuild ~3,000 miles ago, and this is about 7-900 miles after I swapped the head. Both plugs read fine, right side maybe a bit lean, so I didn't think it was carbon buildup on the valves.
The left cylinder may have an occasional miss, as the bike is idling a bit rough, and the bottom pipe is a bit cooler than the top.
I plan on running through the paces - cam chain, valves, timing, carb clean - this weekend, but curiosity led me to post here.
I took cold compression on my twin yesterday just out of curiosity, and picked up 165PSI on the right side, 195PSI on the left side (!). Same pistons/rings since the rebuild ~3,000 miles ago, and this is about 7-900 miles after I swapped the head. Both plugs read fine, right side maybe a bit lean, so I didn't think it was carbon buildup on the valves.
The left cylinder may have an occasional miss, as the bike is idling a bit rough, and the bottom pipe is a bit cooler than the top.
I plan on running through the paces - cam chain, valves, timing, carb clean - this weekend, but curiosity led me to post here.