Honda Twins banner
1 - 3 of 3 Posts

·
Registered
Joined
·
66 Posts
Discussion Starter · #1 ·
so I own two twins, one a cl350 one a cb360, and I've gone through the 360 engine and made as many upgrades as I could think of without increasing displacement, then I started looking into building my cl350 motor and according to specs, the 350 has 325cc, vs the 360's 356, yet it produces 2 more hp and has a 10,500 redline as opposed to the 360's 9000, same stroke, 360 is 3mm larger bore... so I'm for the life of me trying to figure out why, the valves are identical, the wristpins on the 360 are larger, so I'm not sure why this newer bigger engine sucks... can anyone explain it to me so I could build my 360 into a better engine?
 

·
Sensei
Joined
·
27,180 Posts
Lower compression ratio (360=9.3/1, 350=9.5/1) and milder camming..... I show a 7mm bore difference , and both engines run similar 28mm CV carbs, so it's likely the 360 is slightly under carbed, under jetted......Assuming identical sized valves would make them proportionally smaller on the 360......etc, etc.....
I believe the basic design changes from 350 to 360 were to reduce production costs, not to improve the performance...
 
1 - 3 of 3 Posts
Top