Don't exactly know. There was a pop and it died. And it just wouldn't start again, no matter what I tried.
I thought at first it flamed out. But now I think its something else.
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Sounds like there is a bent shock shaft if you have to coax it through its stroke.
I would take the clutch bell off and see if there is any broken bits, I.e. snapped spring.
Might be worth stripping down the engine and carb. Clean and rebuild.
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I have used the New EEA Big Block Mount with ease. And have a XTM 247 BB engine bolted up.
If you can't find my build thread on this forum, search the traxxas forum, there is an abundance of info.
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I've got one that I have stored away. Have a look on my build thread, for what I've done to it.
Revo vantage carbon build thread.
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I have kept my 3.3. I quite liked it. I modified the sleeve and the crank, for better air flow. And converted it to pull start.
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