warm it up and dont baby it.
Breaking In Engine
so what do you guys recommend for a completely gone through engine as far as breaking it in?
1 - 20 of 25 Posts
QUOTE (YFZ450 #69 @ Mar 5 2009, 08:45 PM) index.php?act=findpost&pid=754312
dont baby it? i was told to baby mine for the first tankwarm it up and dont baby it.[/b]
QUOTE (450kidd @ Mar 5 2009, 06:50 PM) index.php?act=findpost&pid=754314
whoever says to baby it is out of touch or covering their ass against people that shouldnt own anything with an engine.
The original break in theory was developed when engines had hand made plain bearings and chitty cast pistons with clearances you could walk through.
I dont mind if people disagree with this, i wont get offended because i know what works for me.
with the metallurgy and machining processes used to build these things, the "break in" requirements arent needed. the only thing that needs to happen is to get a good ring seal and the only way to get that is by making it work by varying the rpm under load and letting it decel through the gears.dont baby it? i was told to baby mine for the first tank[/b]
whoever says to baby it is out of touch or covering their ass against people that shouldnt own anything with an engine.
The original break in theory was developed when engines had hand made plain bearings and chitty cast pistons with clearances you could walk through.
I dont mind if people disagree with this, i wont get offended because i know what works for me.
i break mine in like i'm going to ride it. HARD!!!
QUOTE (YFZ450 #69 @ Mar 5 2009, 06:04 PM) index.php?act=findpost&pid=754317
Couldn't have been said better. I took my bike to the dunes found the flattest spot called the "highway" and pinned it through all gears then down shifted through every gear and let the compression of each downshift slow the bike down. I did that a few times. Worked for me!with the metallurgy and machining processes used to build these things, the "break in" requirements arent needed. the only thing that needs to happen is to get a good ring seal and the only way to get that is by making it work by varying the rpm under load and letting it decel through the gears.
whoever says to baby it is out of touch or covering their ass against people that shouldnt own anything with an engine.
The original break in theory was developed when engines had hand made plain bearings and chitty cast pistons with clearances you could walk through.
I dont mind if people disagree with this, i wont get offended because i know what works for me.[/b]
Beat the w00ter out of it, but don't manhandle it
well im def going to try this new break in when i re do my engine this week but now a new question my stock motor only has lik 30 hours on it do i have to hone the cylender now to let my rings set right?
QUOTE (450kidd @ Mar 5 2009, 06:39 PM) index.php?act=findpost&pid=754339
Depends on how your cylinder wall looks.well im def going to try this new break in when i re do my engine this week but now a new question my stock motor only has lik 30 hours on it do i have to hone the cylender now to let my rings set right?[/b]
QUOTE (Sidewinder @ Mar 5 2009, 09:40 PM) index.php?act=findpost&pid=754340
what should i look for when i take it apartDepends on how your cylinder wall looks.[/b]
how will i know what the perfect look will look like?
QUOTE (450kidd @ Mar 5 2009, 11:18 PM) index.php?act=findpost&pid=754402
try to get a very clear picture of it from different angles around it, post it up, some of the great guys around here will help you identify the condition.how will i know what the perfect look will look like?[/b]
that might be a problem cause im working out side and have to try and get everything done as fast as possible i will do that thogh but hopefuly will get a very quick reply
dont hone the cylinder...its nikasil coated and it cant be honed with a regular hone
i took mine easy and its good. First tank was quarter throttle and below, second tank was half throttle and below, then the third tank was 3/4 thotle and below then the fourth tank i pinned it.
ya after reading that testimonial my motoman i'll bring it up and down my street a few times to get some good accel and decel on the engine..
i was told to start it and let it warm up and then completly cool down. do this 3-4 times and then go ride at varing throttle, and not to lug it
i herd 10 min. idle , cooldown, repeat, and ride like u stole it!!!!
1 - 20 of 25 Posts
- This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
YFZ Central
A forum community dedicated to Yamaha YFZ owners and enthusiasts. Come join the discussion about performance, modifications, troubleshooting, maintenance, classifieds, and more!
Full Forum Listing
Recommended Communities
