Originally Posted by g-wan
hope those engine same with the on road engine as my friend ever try toro nero on his 1/8 on small tight track,but is it the same performance or different on off road and on road engine?some say off road engine can be use to on road,but some say the crank shaft/ conrod will broke due to stress once on the straight..
That could be because of over-revving the engine.
Offroad engines produce less RPMs, say up to 35,000.
Onroad engines can make past 50,000 under no load, but when in a car the usually make 40-45,000 RPM.
Offroad have more torque whereas onroad has more RPM and I think a higher Peak HP, as well as a more broader power curve.
I would say that you could use an offroad engine for on-road, but I wouldn't because they aren't made for that kind of use, and because you would have to gear it up higher so the engine doesn't top out and over rev.