baack Posted January 10, 2009 Report Posted January 10, 2009 So i talked to the dude that owned the banshee before me and told him that he was full of sh** about it being bored to a 450 he said thats just what yamaha told him he had it bored 20 over he said it has toomy pipes and reeds on it what does it being bored 20 over mean and is that something that is possible or is he bullshitting me once again thanks for all the help! Quote
278 Posted January 10, 2009 Report Posted January 10, 2009 (edited) .020 over will definantly not make it a 450. I was unaware that toomey made reeds, I dont think they do, but I could be wrong. The boring really doesn't do anything all it means is that for whatever reason the cylinder walls needed to be cleaned up a little bit because it had some grooves in it so he had it bored to clean them up. Edited January 10, 2009 by 278 Quote
lilmegill727 Posted January 10, 2009 Report Posted January 10, 2009 (edited) nice shee and welcome! its definetly not bored to 450 lol. boring means when they expand and widen your cylinders cause he blew up the motor and it scarred the cylinder walls so they bore it out so its nice and smooth. you have bigger pistons in it now to match the bigger bore size. usually depending on how bad the cylinders are scarred, they'll bore it .010 over if there not that bad and .020 if there a little worse. like mine are bored .030 over. good luck with the bike! Edited January 10, 2009 by lilmegill727 Quote
baack Posted January 10, 2009 Author Report Posted January 10, 2009 .020 over will definantly not make it a 450. I was unaware that toomey made reeds, I dont think they do, but I could be wrong. The boring really doesn't do anything all it means is that for whatever reason the cylinder walls needed to be cleaned up a little bit because it had some grooves in it so he had it bored to clean them up. no i meant it has toomy t5 pipes and intake reeds i could have would tangle up too lol this is my first banshee! I LOVE IT! Quote
brian Posted January 11, 2009 Report Posted January 11, 2009 This topic is pinned in the repairs and mods section ! Oh what the hell.................click here !! This means that with a stock stroke you would have to bore it about .355 over stock bore size. Boring it .020 over makes the bore size 64.5mm. Quote
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