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Old 12-23-2009, 12:54 AM   #1
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Default ninja jx ,shim 30% ?

just got me new donk and want to know is it really necessary to install shim q
when running 30% nitro ,,,i want to keep max power cause im using in truggy or is it better to use ? ,is life greatly shortened by not using ?,,also do os venturis fit carby ?,,as this is a os engine
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Old 12-23-2009, 01:32 AM   #2
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i would put one on because it will last a good bit longer but a ninja has plenty of power even with the shim. we run a JPX 21 in our jammin truggy that everyone says is heavy and we just run 20%. i would get the shim and run 30% and it will have plenty of power.
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Old 12-23-2009, 08:44 AM   #3
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Quote:
Originally Posted by Gen View Post
just got me new donk and want to know is it really necessary to install shim q
when running 30% nitro ,,,i want to keep max power cause im using in truggy or is it better to use ? ,is life greatly shortened by not using ?,,also do os venturis fit carby ?,,as this is a os engine
The engine comes stock shimmed for 30%. do not add the extra shim. yes os stacks will fit... i like the 8mm
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Old 12-23-2009, 12:13 PM   #4
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Quote:
Originally Posted by Gen View Post
just got me new donk and want to know is it really necessary to install shim q
when running 30% nitro ,,,i want to keep max power cause im using in truggy or is it better to use ? ,is life greatly shortened by not using ?,,also do os venturis fit carby ?,,as this is a os engine
Run the extra (2 total) copper shim for breakin...Remove it after the engine loses pinch.
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Old 12-23-2009, 03:12 PM   #5
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Delete wrong post , sorry

Last edited by romax; 12-23-2009 at 07:18 PM.
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Old 12-23-2009, 05:34 PM   #6
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Run the extra (2 total) copper shim for breakin...Remove it after the engine loses pinch.
+1
I did this, and I have no issues.
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