![]() ![]() I’d like to try and keep it in the 10:1 area just so I can stay with the premium gas. The only thing was that according to Namura’s website all the piston kits for the 400EX were 11:1 compression. While looking at pistons the Namura piston seemed to be best quality that I could find as far as cast ones go. I don’t do any racing, but I do ride hard and was figuring on sticking with the stock cast type piston. ![]() It doesn't seem to be burning any oil though cuz there's no smoke whatsoever coming from the exhaust. Added a little oil and it when up just over 100psi. Did a compression test on my 400EX the other day and found out that my rings are a little worn – read 80psi – should be 100-128psi.
0 Comments
Leave a Reply. |