Ring placement? - Honda TRX Forums: Honda TRX 450R Forum
 
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post #1 of 8 (permalink) Old 04-15-2010, 12:06 AM Thread Starter
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It's about time to put my top end back together, and I've always been kinda curious about piston ring placement. I know that it's smart to keep the top two compression rings on the cool side (intake side) of the head, but exactly how far apart should the ends be. 90 degrees or is there someone out there who has a different idea?- and what about the oil rails? I'm dealing with a set of low tension rings. How do you place them?

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post #2 of 8 (permalink) Old 04-15-2010, 01:13 AM
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post #3 of 8 (permalink) Old 04-15-2010, 01:34 AM
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I always put the top 2 rings in with the gaps 180° apart
Both gaps are lined up with the NON thrust side of the cylinder.

Oil ring gaps are 120° apart (but really don't matter)
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post #4 of 8 (permalink) Old 04-15-2010, 02:41 AM Thread Starter
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Quote:
I always put the top 2 rings in with the gaps 180° apart
Both gaps are lined up with the NON thrust side of the cylinder.

Oil ring gaps are 120° apart (but really don't matter)[/b]
So are you saying that you line up the top 2 with the wrist pin ends?

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post #5 of 8 (permalink) Old 04-15-2010, 02:44 AM Thread Starter
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Thanks for the diagram Pgreenlaw!!!

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post #6 of 8 (permalink) Old 04-15-2010, 10:58 AM
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it doesnt really matter all that much...

90*, 180* etc..... just dont line them up together....

remember...on a 4-stroke... these rings MOVE round/round...so where you place them at first...is not where they remain.... but placing them at least 90* away from each other will help reduce them from lining up during the break in procedure....


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post #7 of 8 (permalink) Old 04-15-2010, 12:25 PM
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Quote:
it doesnt really matter all that much...

90*, 180* etc..... just dont line them up together....

remember...on a 4-stroke... these rings MOVE round/round...so where you place them at first...is not where they remain.... but placing them at least 90* away from each other will help reduce them from lining up during the break in procedure....


jmho....g[/b]
Spot on Greg!
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post #8 of 8 (permalink) Old 04-16-2010, 12:28 AM Thread Starter
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Thanks for the advice guys!!!! I never really thought about the rings moving or changing positions during use, but I guess I never really bothered to notice where they actually were positioned during disassembly.

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