Break in

[Max400]

I just put a new piston in and a stage 1 hot cam, I have ridden it around for about 30 mins. I'm going to re-adjust my valves and change the oil, Is that enough break in time and can open it up and she what it does? or should I give it a little more break in time?

[COOTERGUY]

I KNOW YOU WANT TO PUNCH IT AND SEE WHAT YOU'VE GAINED, BUT YOU SHOULD TREAT IT JUST LIKE IT WAS BRAND NEW. MAINLY BECAUSE INSIDE IT IS. MOST SHOPS RECOMMEND A 5 TO 10 HOUR BREAK IN PERIOD WHERE YOU TRY NOT TO GO OVER 1/2 THROTTLE JUST TO LET THE RINGS SEAT IN SUPER GOOD. IT WILL ALL PAY OFF IN THE LONG RUN.

[Rebelrider4OOex]

Originally posted by COOTERGUY
I KNOW YOU WANT TO PUNCH IT AND SEE WHAT YOU'VE GAINED, BUT YOU SHOULD TREAT IT JUST LIKE IT WAS BRAND NEW. MAINLY BECAUSE INSIDE IT IS. MOST SHOPS RECOMMEND A 5 TO 10 HOUR BREAK IN PERIOD WHERE YOU TRY NOT TO GO OVER 1/2 THROTTLE JUST TO LET THE RINGS SEAT IN SUPER GOOD. IT WILL ALL PAY OFF IN THE LONG RUN.

oh man i hope not they didnt tell me that crpa when i boight my 400ex new last month i hope i didnt mess the pstion or rings up.............:(

[Max400]

I can already feel the difference. I can't wait till it's broke in :D ..
I just left the stock bore and got a JE high dome piston and stg. 1 cam and I can teel a difference, I bet a 416 with a stg. 2 would scream. But for just trail riding it really woke up the motor.

[Silver400EXinBR]

wel i just got mine finished with everything in my sig... I went from boner stock to what I have now,.. and beleive me it is worth every penny!!!!!