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Piston Ring Order

LOUD MOUSE
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Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Re: Piston Ring Order

Post by LOUD MOUSE » Mon Apr 27, 2009 6:45 am

THERE WILL BE NUMBERS ON THE RIGHT/TOP EDGE. USUALLY NOT EASY TO SEE.
IF YA DON'T SEE THEM ON WHAT IS TOP AS INSTALLED YA MANY WANT TO LOOK AT THE OTHER SIDE. THEY MAY BE INSTALLED WRONG SIDE UP. .........lm
Spargett wrote:It appears my rings don't have any numbers on them whatsoever. They're NOS honda rings too. Oh well.
LOUD MOUSE wrote:YOU WILL SEE NUMBERS ON THE RIGHT SIDE OF THE OPEN END IF YOU HAVE THE RING "TOP UP". ..........lm
Davo, thanks, saw reference to that in Bill Silver's manual. Always appreciate the reminders.
davomoto wrote:Also, be sure to put the end gaps 120 degrees apart.

rbaselt
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Joined: Sat Apr 08, 2006 7:24 pm
Location: Seal Beach, CA

Post by rbaselt » Tue Apr 28, 2009 10:05 am

Forget about staggering the ring gaps. The fellows at Triumph did a study years ago in which they ran an engine for 1, 5 and 10 minutes and found that the rings turned freely in random directions even in the span of 1 minute. --Randall

Spargett
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Joined: Wed Jun 18, 2008 10:19 pm
Location: Los Angeles, CA

Re: Piston Ring Order

Post by Spargett » Tue Apr 28, 2009 2:15 pm

I went a double checked the rings in the sunlight. I found the numbers. Man, those things are faint. Luckily for backtracking's sake, only one of the rings was upside down. Thanks again.

I was curious as to what the effects would be of an upside-down ring.
LOUD MOUSE wrote:THERE WILL BE NUMBERS ON THE RIGHT/TOP EDGE. USUALLY NOT EASY TO SEE. IF YA DON'T SEE THEM ON WHAT IS TOP AS INSTALLED YA MANY WANT TO LOOK AT THE OTHER SIDE. THEY MAY BE INSTALLED WRONG SIDE UP. .........lm
Thanks for the fun fact rbaselt.

Spargett
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Posts: 592
Joined: Wed Jun 18, 2008 10:19 pm
Location: Los Angeles, CA

Post by Spargett » Tue Apr 28, 2009 2:17 pm

I'm about to put the piston's back on, I was wondering as to which side the piston ring clips should be on? The inside of the piston or the outside? If memory serves me correct, it was the outside.

LOUD MOUSE
honda305.com Member
Posts: 7817
Joined: Mon Aug 15, 2005 8:23 am
Location: KERRVILLE, TEXAS

Re: Piston Ring Order

Post by LOUD MOUSE » Tue Apr 28, 2009 5:43 pm

Each ring has a job such as seal for compression or first seal for oil and second for oil.
If upside down the ring can't do it's job. .............km
Spargett wrote:I went a double checked the rings in the sunlight. I found the numbers. Man, those things are faint. Luckily for backtracking's sake, only one of the rings was upside down. Thanks again.

I was curious as to what the effects would be of an upside-down ring.
LOUD MOUSE wrote:THERE WILL BE NUMBERS ON THE RIGHT/TOP EDGE. USUALLY NOT EASY TO SEE. IF YA DON'T SEE THEM ON WHAT IS TOP AS INSTALLED YA MANY WANT TO LOOK AT THE OTHER SIDE. THEY MAY BE INSTALLED WRONG SIDE UP. .........lm
Thanks for the fun fact rbaselt.

rbaselt
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Posts: 209
Joined: Sat Apr 08, 2006 7:24 pm
Location: Seal Beach, CA

Post by rbaselt » Tue Apr 28, 2009 7:32 pm

Ultimately, you want pin clips at both ends of the pin!! But it's a lot easier if the clips face each other when installing the pistons, would be tough to do the other way around, although maybe not impossible. I assume you know there is a front and back to each piston. I find it easier to place the pistons into the upside down cylinder first up to the level of the top of the pin, then slowly lower the cylinder down onto the crankcases, sliding each pin home one at a time. That way you don't have to fight to squeeze the rings into the sleeves with very limited access. --Randall

Spargett
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Joined: Wed Jun 18, 2008 10:19 pm
Location: Los Angeles, CA

Post by Spargett » Tue Apr 28, 2009 7:38 pm

Yeah, two pins on each side makes sense to me as well. But most kits I see only have one pin per piston, and the same was true when I took the old ones off. I noticed there are recesses for clips on each end. Looks like it's time to place an order. Thanks for the help. Learning alot from everyone.
rbaselt wrote:Ultimately, you want pin clips at both ends of the pin!! But it's a lot easier if the clips face each other when installing the pistons, would be tough to do the other way around, although maybe not impossible. I assume you know there is a front and back to each piston. I find it easier to place the pistons into the upside down cylinder first up to the level of the top of the pin, then slowly lower the cylinder down onto the crankcases, sliding each pin home one at a time. That way you don't have to fight to squeeze the rings into the sleeves with very limited access. --Randall

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