I just blown the piston/sleeve in th cen genesis ...should I replace the piston/sleeve or should I buy the o.s.30 vg...

Go for it
It would be nice to hear from some one with another engine in the Genesis. If you go for the OS please give us the difference in torque and high speed between those two engines!

how do you blow the engine? and how do you know you've blown it? please post pics if you can.

when you take the piston and sleeve out and put the piston back in the sleeve (out of the engine cast)...if it goes through without stopping (pinching) that mean you have no compression which mean...no acceleration.

So what you are saying is that your engine is "worn out" not "blown up". I know the piston and sleeve are costly for this engine but you can get a new engine for $200.00 by doing the engine swap program: http://www.cenracing.com/engineswap.html

no thanks...I found one in ebay for 45 dollars for piston/sleeve and ...I thought about it. I continue looking and found a sleeve resizer that I really been looking for so it coming this week...I have a few sleeve resizers for trx and others. I love those sleeve resizer it save u a lot of money in the future. Yes you are right Cen racing....I mean it worn ..not blown....sorry about that!

OK,
I'm a little confused CEN Racing, why do you offer a swap for two bills when you can get a complete new engine for the same price?

http://www.neweramodels.com/cgi-bin/...r&part_id=2321

I am FED UP with the Genesis engine. It is great for bashing but as soon as you get it on a track, the thing stalls, sputters and just can't handle the open / close sequence on the throttle in a track. It cna go for a little more than one lap and then it starts to stall and shuts down.
It is not a matter of set up, I have spent hours upon hours changin the stting on the needles, then sent it to my LHS (CEN distributors), then even bought a new carb (original CEN) thinking mine would be damaged.
This is the second Genesis motor I've had (the other one blew the main ball bearing and was replaced by CEN's warranty) and neither could handle track use.

I was thinking of putting on a .26 Sportworks (the one the LST has) or a WASP .32. Anything that can stay running anf not shut down every time I hit the cirve after the long staightaway would be betteer than mine.

Any recommendations as to what motor I should put on there?