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Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc. |
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#1
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B or C piston
Hi all, I have a '11 ec300 with 100+ hours on it and a 'B' cylinder and found 'A' and 'C' wossner top end kits. Should I get The 'C' or keep looking for a 'B'.
I searched on here some people use the larger piston in a used cylinder that was not replated. Any suggestions would be greatly appreciated. jz |
#2
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Have you contacted anyone to see if they can order you a B? |
#3
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You will be fine with the C, I do a size up on all rebuilds. I have a B in my A cyl now with 100 hrs on it and will replace with the same soon. You will not be able to measure the cyl accurately enough without some expensive tools and proper technique. Your talking about .01mm or .00039" between sizes, technique and temperature will introduce more error than what you are trying to measure.
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#4
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Thank you, I thought that was the case. I just wanted to verify the results I found. http://www.ebay.com/itm/TOP-END-WOSS...item53eb490211 ^^good deal? jz |
#5
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Looks good to me
Thanks for the info Glenn. Would there ever be much chance that going up a size would result in not enough clearance? Or more likely that ring end gap would be a cause for issue? Coachtech, good to see they give you the full stack of base gaskets to work with too. Are you planning on doing any work to the port timing/squish? |
#6
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#7
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the chance of going up a size being too tight, is miniscule. my borematic has difficulty getting repeatable .0005" - the difference is so small that temperature has more effect... there's plenty of clearance. you'd need some pretty high end gauges to measure the difference between bore sizes.
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07 ec300 was 00 xc200 now a 00 xc300. now parting out. 99 ec300 (now a pile of parts which are for sale) Stainless Cycle - Motorcycle Bolt Kits www.stainlesscycle.com |
#8
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Cool, good info. Thank you GasGas Guru's!
Jakobi, yes I was going to measure squish and use a gasket to maximize squish w/out effecting port timing much. My bike runs great for my riding style and feel no need to make any major modification. Let's call it "fine-tuning" if necessary. jz |
#9
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There was a thread which showed some graphs and the effects of head/gasket works on the engine. I'll try and dig it up. |
#10
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... Here you go: http://www.gasgasrider.org/forum/showthread.php?t=10113
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