Ques never seen asked...

[TMSmx47]

Hey guys whats up. All these questions and no one ever asked about a new piston break in.. or should I say proper break in. Just curious how you guys break in your motors after installing a new piston?

Me I do 5mins roll on throttle.. let it cool down. Then 15mins still roll on throttle.. let it cool down. Then 30mins a little harder on the gas but still roll only half throttle.

[MAD450r]

Thats all I have ever done with breakin's and never had a single problem.

start it once let it get nice and hot at idle or just put around a bit then let it cool down fully.

[cals400ex]

i get it up to full temp and then put it to the floor. i change the oil after 20minutes of ride time. i do the same thing again and change the oil again after an hour or two.

[coryatver]

I start it up and ride! On YFZ's start it up and hold it wide open. It will sieze if you don't! The 2007's got a oil injector so they should have the problem.

[400exrider707]

Actually this is one of the more popular technical topics on this forum, try searching. Quite a few people do the hard break ins, including myself. www.mototuneusa.com

^^^^^^^^^^^^^^^^^^^^^^^

I agree!!!!!!!!

[chad502ex]

motoman method. I've tore many builds down and can verify motoman method looks the bests on internal parts....

;)

[roundsy]

motoman forsure!