Alright folks, got my sons bike put back together and it seems to be functioning fine but I now need to know the breakin procedure for these types of mods.
For those that aren't familiar with the situation here's a quick rundown. My son's transmission grenaded down at Glamis a couple of weeks ago so I searched high and low trying to get the parts I needed and it wasn't going so well. Cost wise anyway. Figured I'd see what I could do to find a drop in motor instead but that was somewhat futile. Along the way some decent deals on aftermarket items came along and finally the motor appeared.

I ended up with a complete 01 motor in very nice shape, an 11.5:1 piston, and a set of Wood 9 cams. Used the 01 bottom end since my crankcase was busted, 01 cylinder since the grenaded parts had pitted mine below where the piston runs, and my 03 head. Already had a TM45, Big Gun Race series exhaust, Big Gun CDI, K&N, blah blah blah.

Fired her up while ago and the only thing I noticed out of the ordinary was that I had to choke it even at 84 degrees, and then adjust the idle a little faster. Does the compression change affect the starting? Started fine several times after the adjustment but never really cooled down either.

I'm going to take it out to the dry lake bed in the morning and ride in some different types of terrain. Just curious as to the recommended break in procedure for these mods. We have a Glamis trip scheduled this weekend. Will it be safe to take it on the normal runs through the dunes after just an hour or two through some trails and a lake bed?
Don't want to be too hard too fast, or should I ride it like I stole it?

 

Vic,
Congrats on your first rebuild, can't really answer your questions, but good luck with it.

 

Ive alway's broke every build in like i intend to ride it......But im not always the best to listen too.[img]i/expressions/face-icon-small-wink.gif[/img] And hey congrats on the build.

 

Ace - Take it out and put it under decent load. Don't let it idle too much and don't just putt around either. Put it under load, get into that throttle but don't rev it way out. You need the load to push the rings hard against the cylinder to seat the rings.

Listen for your carburation the first time you do this. If you have lean popping or rich blubbering adjust your jetting because rich will be really bad for your break in and you know why you don't want lean.

I think your carburation should be close enough to break in but it probably isn't optimal with the few changes you did. I would guess you are a touch lean if you have upgraded your piston and cams.

A little lean is better than a little rich for break in.....imho.

Good Luck man!

 

AZ - lol, sounds like you do the light break-in they recommend in the manual. [img]i/expressions/face-icon-small-happy.gif[/img]


lol, I know, I know.......snuggleyournutz! LMAO j/k

 

Hate to say this now but, if you don't know how old the valve springs are you may want to change them out. Those cams can eat-up valve springs and send loose valves into the jug. . . almost got sick the first time I saw a head with a bent valve pushed into it.

 

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