Originally Posted by Wolverini

With ALL due respect to everybody you've read posts from, many of those guys would kill any engine they touched. Every manufacturer will have the occasional clunker now and then, it just happens. The key here is what you said, "all the top guys run them". They're at the top cuz they're GOOD and know their stuff when it comes to R/C.

As far as break-in goes I'd go with the disk that comes with your new engine or turn to who YOU trust to help advise you. Ask the top guys how they broke in their engines and model what you do from that. Everybody will say something different when you ask that question and most will advise you well. There are different methods and most don't do much harm even when not done "perfect". But start with the guys you see at your track in the A-main every week that run the engine you want to get. TALK to them bro. Who knows, you might make a new friend along the way.

Originally Posted by M7H

try this:

http://www.mugen-rickv.com/index.php...d=15&Itemid=78

Originally Posted by wallyedmonds

to me they do if i start to rich it stays that way and to lean i know right away its to lean.
and in a 30 min main it stays the same the hole time.
just like other motors seal the carb and its fine.
we use racer's choice air seal.
and break in do it the way mike S said,do not do the full throttle way.it here somewhere back a couple of pages.