[Domingor]

I was reading a post on break-in methods for engines. Now, i am assuming that similar methods are used for karts, but I just want to know you guys approach this.

http://www.mototuneusa.com/break_in_secrets.htm

http://motorcycles.suite101.com/arti...in_controversy

http://www.flyinmiata.com/tech/breakin.php

I just got a new HPV100 engine and to break it in. I drove it hard at the track (Concept Haulers Motor Speedway) for 30 minutes.

[Mikko Nassi]

Karts likely have slightly tighter tolerances than road bike engines, so following the "hard immediately" approach will often lead to a seized engine "immediately".

[JohnKing6]

Karts likely have slightly tighter tolerances than road bike engines, so following the "hard immediately" approach will often lead to a seized engine "immediately".

That's why the subject is Break-in rather than Run-in

[gp8]

Like I always say - sometimes its hard to differentiate between what you believe to be true and what you really know. I have no significant experience of running in race kart engines on the track. The (very) few we have run in on the track using the manufacturers "coke it up" method were never very well performed engines. I neither know nor believe that the running in process used was the primary causal factor is somewhat average outcomes. It could well be pourely coincidental.

Virtually all of our engines (and certainly all of our current rotax engines) have been run in on a programmed dyno. I do not believe that you will see better performed rotax engines in Australia than those built by CC Racing and run in on their dyno. Now in terms of the dyno program - well I believe (but don't absolutely know) that it is very similar to what is recommended in the first article above under "dyno"...