Breaking in a new top end

[kx125412]

I've done a search and found 10 million different oppinions on how to properly break in an engine. Im in the midst of ordering a new top end for my 81' RM 125 and I just wanna get an idea of how most of you here break in a bike. Alot of the things I read were "well I heard you do it this way..." So any help would be appreciated.

 

[ellandoh]

my routine that has worked well for years is

1. start bike and warm it up slowly
2. let cool completely
3. start bike and warm it up while riding easy
4. let cool completely
5. start bike and warm it up while riding easy with burst of aggressiveness
6. let cool completely
7. start bike and ride it like you rented it(with optional insurance)

 

[The_good_ol'e_boy]

lol number 7 sounds like the best step of the process.

 

[chevy383cid]

Thats the best way!!!Heat cycles,Always worked well for me.

 

[AnTs]

Heat cycles. Says it right in the honda cr250 manual

 

[kx125412]

Alright then I'll try it that way, so the first warm up just a few minutes no revving or a little bit of mild revving?

 

[ellandoh]

Alright then I'll try it that way, so the first warm up just a few minutes no revving or a little bit of mild revving?

i usually give it some varied rpm's for 6- 10 minutes til its completely warmed up

 

[kx125412]

Ok thanks!