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Modded nitro motors

Old 07-06-2019, 09:26 AM
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let_it_fly
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Default Modded nitro motors

I recently acquire some nitro engines from a friend of mine who used to race dirt track stadium trucks. He had one engine that has been modified by a company that modifies race engines. I have no interest in stadium truck racing and would like to use this engine in my pro mod drag car. My question is how do I know how that's motor was modded and if it will work for my application? Here is some pictures I took of the sleeve don't know what other modifications were done anyone have any answers



for me?
Old 07-06-2019, 09:27 AM
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let_it_fly
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I forgot to add this is a OS CVR 12 engine
Old 07-06-2019, 11:42 AM
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1QwkSport2.5r
 
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It looks like it’s had some cosmetic stuff done to it. The difference will be in knowing what certain measurements were stock and what the engine you have measures. The grinding on the outside of the liner alone won’t do much if anything, however if the timings were changed and work done to the crankshaft... then you may really have something. Look at the top of the ports (towards the top of the liner). If you see brass across the whole port window top, it’s probably been modified. If you see chrome, then it’s not been changed. If you can degree the engine and take some basic measurements of the crank, I can give you a fair assessment of the engine.

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