New to the site, but not new to rc, just a little lost on this one.

I have a Yokomo GT4 with the RX18RE, and it hasnt started for some time now, not even the local hobby shop techs were able to get it to start easily..even with a new piston/sleeve/backplate.

my question is what other engine options are there for the GT4 that have the same output shaft?

pull starts are not a must, but it must have a rear exhaust port, not side.

I had thought mabey the traxxas 2.5 with the long shaft but not sure. I would prefer the Traxxas engine, but just want to know what my options are shaft wise and if the stock clutch assembly and gears would work with any other engine and what shafts are needed.

i really hope i made some sense here, but i need to know as soon as possible.

thanks, and sorry for the ignorance.

maybe you should try thr rc car engines forum

i did after i realized i posted in the wrong forums..thanks