I moved this to the nitro forum, you should get a better responce here.
Are you looking to convert your GXR15 ( thats a Kyosho engine, right? ) to non-pull start, or are you looking to mount a non-pull start engine in place of your GXR15? Also, what car is it in?
Generally, with many nitro engines - yes you can convert it to non-pull start by buying a new backing plate and becoming creative with a cut-off wheel. There is a lot more to this process than what I am going to type here, as I'm not sure what exactly you want to do. I would probably reccomend getting a new engine rather than going through this process, even more so if you've run quite a bit of fuel through it. And again, generally speaking, most nitro cars you can mount a non-pull start engine in place of a pull start engine. You will have to buy a starter box though. It would also be best to purchase non-pull engine mounts and flywheel to lower the engine - which although not "nessisary" - is definately reccomended as a lower Center of Gravity is one of the benifits of a non-PS engine.
These additional questions should help get the ball rolling on getting you an answer. Welcome to RCTech!
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