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pro 21 to pro28 is this possible

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Old 05-17-2009, 08:38 AM
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jbrobertsonjr
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Default pro 21 to pro28 is this possible

can anybody tell me if a pro 21 thunder tiger block will accept a pro 28 piston and sleeve if this will work, will i have to change carb
Old 05-17-2009, 08:39 AM
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supertib
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Default RE: pro 21 to pro28 is this possible

no it will not work...the 28 has a bigger sleeve bore
Old 05-17-2009, 08:47 AM
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jbrobertsonjr
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Default RE: pro 21 to pro28 is this possible

thanks , i will have to buy one to put in my 21 xtr3e will be 28 xtr3e soon thanks
Old 05-17-2009, 09:47 AM
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jbrobertsonjr
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Default RE: pro 21 to pro28 is this possible

 one more question i have a pro 21 that i run on 20 % fuel i want to switch to 30 % nitor do i have to do anything to the motor or just adjust the carb
Old 05-17-2009, 12:18 PM
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SManMTB
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Default RE: pro 21 to pro28 is this possible

I ran my TTR .21 on 30% without doing anything besides retune it.
Old 05-17-2009, 12:48 PM
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Default RE: pro 21 to pro28 is this possible

thank for the info gonna get me some fuel

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