my 400 was burnin tons of oil and low on compression so i decided to get the 11:1 wiseco .040" over but no 1 has them. i work at the local shop and none of our people had 1 in stock and neither did wiseco so i decided to go with the je 10.6-1 040 over


was this a good choice?

the wiseco was backorered for atleast 2 weeks and i need to ride now

 

What exactilly is your question? Did you check moto-man? Thats where I got mine

 

I use that piston in my 400EX and have been happy with it. I can run premium pump gas in it without any knocking. I think JE pistons are better made than Wiseco pistons too.

 

Its good to know 10.6:1 runs on premium! Do you guys lose any bottom end power running this compression over stock?

Rod
86 250R
02 400EX

 

Higher compression will give you more bottom end. To benefit most from a high compression piston you will want a new camshaft too. If you want strong bottom end power there are camshafts that emphasize low end to mid range power.