Piper 285 cams on a ST170
02-10-2011, 07:24 PM
#1
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Piper 285 cams on a ST170
Do the piper valve springs need to be used with these cams or are the st170 valve springs already up to the job? I don't want to take me head off again if I can avoid it!
What sort of power increase have people seen with bolting these in?
What sort of power increase have people seen with bolting these in?
03-10-2011, 07:58 AM
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