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Old 04-05-2016, 09:08 PM
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I own this engine and raced with it last season. It's made by Go, the same as their RTR .21 engine. X-Act also sells it through Amain but rebranded under their name. It's a solid engine. Easy to tune. Not the most powerful, but it was always my driving skill that held me back and not the engine. If you want to run 30% I highly recommend adding a shim. When I switched from 20% to 30% I was blowing glow plugs repeatedly until I added a head shim. I can't remember if it was a .3mm one or a .2 mm one but it solved my problems.

Most .21 head shims should work... the ones I used were from Losi.
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