It's all in the tuning when it comes to speed, power, and lasting cylinders. You can richen it to hell and get ANY motor to last past 5 gallons. Then you can do what I did with my first motor, lean the crap out of it, get a rediculous 50mph out of a DTX 18 and then fry the goddamn thing. Man was that engine screaming, HAH! I DEFINATELY pushed the RPM limit on that thing.

That's exactly what I did to my first engine! GOD THAT THING WAS LOUD!!! I hear richening too much can be bad too though.

i've just finished my 4th gallon in a 2.5. its still running pretty good. starts on the first or second pull. but get this. i sold a rustler with 4 gallons through it to a friend and he got 1 and a half more gallons and it needed a rebuild. i'd say that's pretty good. i've never had to rebuild an engine. (probably because i dont drive it every day.) but i just had a big wreck (trying to go off a ramp at full. lol) and broke the rear hub carrier and another part up front. i've only had to replace 3 or 4 parts while i've had it. (about 1 1/2 - 2 years)

ive had 15 gal thru my 1.5 without 1 problem[sm=punching.gif][sm=punching.gif][sm=punching.gif]

Any normal engine should last 7-9 gallons. Some people have claimed to have 12 gallons through their engine (although that sounds a little exaggerated)!

revo 3.3engine lasted 2 1/4 gallons. i was so pissed when it blew that early

i have a jato on gallon 6 thats faster than the day i bought it, and i bought it used so who knows how many gallons are really on it!

i own the traxxas nitro vee with a trx 15 in it and have run more tanks then i really can count and i even got it used. still goin strong. also i have the traxxas nitro hawk with trx.12 in it. so far i havent had this ran through any tanks. but am sure it has with many tanks through it. this engine looks new because of cleaning.

I'm a noob and have probably treated my 2.5 badly, but it's on gallon 7 and runs superbly, maybe I'm just naturally gifted!