Well went to the race last night and after a night of bad luck it just got worse i was running second about 5 minutes in to the race and the motor flames out again and it was running around 240 so my pit guys startes me back up and ever time it come by i hear something and it dies again got to my pit tables started it up the rear bearing is out but after around 6 gallons i cant complain i took it apart and looked at everthing and nothing seems to be wrong with the piston and sleeve and it still has some compression.

Tks Bro, will try it out..:D

Well I guess about 6 gallons is the magic #. My 2009 hit 6 gallons this last race. Flame out after flame out. Couldnt keep a tune, it ran fine for a couple of mins and then poof, die. Well got home tonight and found the problem. The connecting rod bushing was totaly gone. The good thing is the bearings,crank, piston and sleeve are still in very good shape. So Im hoping another connecting rod, will get me another 6 gallons. Pics are enclosed. The thing that has me a little upset is that my 2010 only has four gallons, and it has some slop in the rod also. So im probably gonna replace it also. Raced with it today and it ran perfect.

hmm.... mine's getting there. might not practice as much before the AMS race... i can't be losin my b5 at a big race.

i'm no expert but your piston looks like you been running lean

This motor was never ran lean, thats what makes it kind of wierd youd expect this from motor that was run lean. But this motor was alway ran on the fat side due to most of its use was during the winter race season most races were 55 or below......

That's an unusual one, I've never seen a rod bushings failure with one of our engines before! And when I say that includes our own race engines which we normaly get 6-9 gallons on the piston/sleeve! What fuel are you using? Also if you could send me a PM on Monday with your address and I'll send you a new rod, would like to get the old one back to take a look at if you don't mind as normaly the rod will last the life of the engine (p/s set).

Regards,

Ron

See, guys... THAT'S why Ron is DA BOMB!

X2:nod:

During break-in did you use a heatgun? Most premature rod failures are caused by improper break in or when you run in the winter your engine is not getting warm enough for the metals to expand causing your rod to have to push and pull too hard in order to move the piston....If the engine temps are too low that bushing takes a real beating.The lube package in your fuel could also be to blame but if that were the case it would cause higher temps....You should really check your rear bearing as well..Winter temps are hard on these little engines and the cold makes the tunning window much smaller.....Good luck.

I ran my 09 b5 almost 10 gallons, had to have it pinched because my airfilter came off. That was during winter conditions with temps around 35-40 engine temps at 200-220. the rod bearings had a small amount of play but not enough to have to replace it. I think that if my airfilter didnt come off, it would have easily gone another 3 gallons or so before it needed just a pinch and mabe some bearings.

i can tell you that, its sidewinder.

Once again you show excelent customer service...

This is exactly the reason we developed the Competition Heat .21 engine heater... It Works.

Hi Ron, First 3 gallons Odonnells, 1 gallon of sidewinder, and last 2 gallons has been Werks. Dont mind sending the rod back at all. Ill pm you my address on Mon. And if you PM me yours ill ship it right out to you. Thanks again for your great customer service.