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Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc. |
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Thread Tools | Display Modes |
#21
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The 250 pistons can be sourced significantly cheaper than the 300s. Another reason I like the smaller capacity.
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#22
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Quote:
Ive sent a order to Motocrosscenter 5 days ago. Havent received answer yet. Pretty terrible service, to be honest.
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07` EC300SM. 09` KTM 250EXC. 70`CB350 |
#23
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Perhaps their on Holiday.?
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'12 XC 200 TTX Sold '15 XC 250E Sale pending |
#24
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New piston is in. Did put the new rings in barrel without piston, ringgap is 0.20-0,25. I know recomended is 0,315 or something.
well, did put the piston it. Runs sweet.
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07` EC300SM. 09` KTM 250EXC. 70`CB350 Last edited by stian; 09-13-2014 at 12:11 PM. |
#25
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will someone confirm that mine is a B size??? |
#26
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It certainly started out as a B. I would measure the diameter a few places along the bore to check wear. If you don't have a measuring device, use a piston ring and measure the bore and compare end gap differences at different heights.
It doesn't take a lot of wear to be able to use a C piston in a B cylinder. The difference in diameter between one piston and the other is only 1/100mm; and they use the same rings. I often go to the next size piston to accommodate wear (keep the tolerances tight and reduce piston skirt slap). When I have a cylinder repaired/re-coated, I normally send an A piston for them to match the new bore to; giving me a head start on ring wear. Happy Thanksgiving and Good Riding! Jim
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Jim Cook Smackover Racing Team LAGNAF '11 Gas Gas EC250 (primary ride) '06 Gas Gas DE300 2004 Gas Gas TXT300 Pro '94 Husaberg FE350 '86 Yamaha IT200 '86 Honda TRL200 Reflex '04 KTM 525EXC (soon to be dual sported) Several others, including project bikes, Deb's bike, and a fleet of grandkids' bikes Let's go riding! http://www.jebruns.com/Wudi19/wudi19.html http://www.ahrma.org/schedules-results/cross-country/ |
#27
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and I ordered the b size last night.
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