Reliability?

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idle

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If i got this how much is a std size je high compression piston, exhaust and cam gonna hurt the reliability of my quad
 

idle

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Id like to go with a standard bore because I dont really wanna take my engine apart so will it be ok with just the standard bore?
 

tistheman5

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well it be better to go with like 1 size more or something to have a fresh motor like what im doing :) but if your motor is still good then it will be ok. what size cam you getting, if you get a big cam like .450 you are going to nee TI valve springs too
 
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