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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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Ring gap? 2001 xc300
Hi there,
I'm ready to assemble my 2001 xc300 top end. I have my cylinder just back from being replated by Langcourt's. They did a nice job. I have an Athena A size piston kit. I sent the piston, but not the rings, with the cylinder to Langcourt. If I drop a ring into the bore to check ring gap, I am seeing about .014 or.015 inch ring gap (.36 or .38 mm). That looks pretty tight to my untrained eye, and I don't have a gap spec to check against. I just wonder if I'll run out of gap when the engine gets hot. Thanks in advance for a clue or two. -Dean 2001 xc300 |
#2
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manual says
300 cc: STD: 0.5 mm - Limit: 0.8 mm it may be different with athena pistons - i know wiseco uses a different spec. this .5mm/.8mm gap spec seems awful big to me.
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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 |
#3
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This from Athena:
"Hello, The difference 0.01 to 0.03mm (0.35 →.38 )in the ring end gap of the rings doesn?t affect the performance of the engine. The clearance piston-cylinder wall that we use is from 0.04 to 0.06mm Thank you" |
#4
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rule of thumb on most engines is .004'' gap per inch of bore.
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