1972 Gp292 Yamaha Piston Ring Orientation - Snowmobile World : Your #1 Snowmobile Forum
http://www.snowmobileworld.com/forums
» Sponsors
Go Back   Snowmobile World : Your #1 Snowmobile Forum > SNOWMOBILING EXTRAS! > VINTAGE SLEDS

Reply
 
Thread Tools
Old 01-18-2008, 04:08 PM   #1
hd_superglide
Junior Member
 
Join Date: Jan 2008
Mileage: 1000
Primary Sled: 03 Rev
Where I sled: NH
Posts: 4
Default

I'm trying to rebuild a 72 GP292 and I'm in the process of putting the motor together. The set of rings that came with the new piston has 2 types, the first which is a straight cut ring I'm assuming is the compression ring, and the second is an "L" shaped ring which I would think is the oil ring. My question is does the L shaped ring face down towards the skirt? I would assume so but wanted to ask this forum in case anyone can confirm or tell me otherwise.

Thanks in advance,

HDhttp://www.snowmobileworld.com/forum/style_emoticons/default/dozingoff.gif
http://www.snowmobileworld.com/forum/style...t/dozingoff.gif
hd_superglide is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 01-18-2008, 04:19 PM   #2
hd_superglide
Junior Member
 
Join Date: Jan 2008
Mileage: 1000
Primary Sled: 03 Rev
Where I sled: NH
Posts: 4
Default

Also I should add, which ring goes where? I've seen references to the L ring being on top and others where it's on the bottom.

Thanks,

HD
hd_superglide is offline   Reply With Quote
Old 01-18-2008, 04:42 PM   #3
catdoo
Senior Member
 
catdoo's Avatar
 
Join Date: Jan 2003
Location: Queensville-Southern Ontario
Mileage: 2121 mi.
Primary Sled: 2006 Arctic Cat Sabercat 700 EFI LX
Where I sled: Ontario
Posts: 575
Default

Quote:
Also I should add, which ring goes where? I've seen references to the L ring being on top and others where it's on the bottom.

Thanks,

HD[/b]
A GP piston only has one ring. Is this a Yamaha part or aftermarket? The "L" goes on top and sits like the letter "L"
__________________
Now that I'm older, I thought it was great that I seemed to have more patience.
Turns out that I just don't give a sh*t.

2006 Mustang V6, Pony Package, Legend Lime (my other Green Machine)
catdoo is offline   Reply With Quote
Old 01-18-2008, 04:51 PM   #4
hd_superglide
Junior Member
 
Join Date: Jan 2008
Mileage: 1000
Primary Sled: 03 Rev
Where I sled: NH
Posts: 4
Default

Quote:
A GP piston only has one ring. Is this a Yamaha part or aftermarket? The "L" goes on top and sits like the letter "L"[/b]

It's actually a piston for an SL292 since GP292 pistons are next to impossible to find. The rings are Kimpex and the "L" ring seems to be slightly larger that the groove cut into the piston, to the point where I can't seem to compress it enough to slide it into the cylinder.
hd_superglide is offline   Reply With Quote
Old 01-18-2008, 05:37 PM   #5
catdoo
Senior Member
 
catdoo's Avatar
 
Join Date: Jan 2003
Location: Queensville-Southern Ontario
Mileage: 2121 mi.
Primary Sled: 2006 Arctic Cat Sabercat 700 EFI LX
Where I sled: Ontario
Posts: 575
Default

Quote:
It's actually a piston for an SL292 since GP292 pistons are next to impossible to find. The rings are Kimpex and the "L" ring seems to be slightly larger that the groove cut into the piston, to the point where I can't seem to compress it enough to slide it into the cylinder.[/b]
Did you place the ring alone into the cylinder to check end gap? Should be at least .006",
maybe you have an oversize piston.
__________________
Now that I'm older, I thought it was great that I seemed to have more patience.
Turns out that I just don't give a sh*t.

2006 Mustang V6, Pony Package, Legend Lime (my other Green Machine)
catdoo is offline   Reply With Quote
Old 01-18-2008, 09:17 PM   #6
hd_superglide
Junior Member
 
Join Date: Jan 2008
Mileage: 1000
Primary Sled: 03 Rev
Where I sled: NH
Posts: 4
Default

Quote:
Did you place the ring alone into the cylinder to check end gap? Should be at least .006",
maybe you have an oversize piston.[/b]

Looking at more it turns out the ring is slight wider than the groove in the piston which is why I can't get it to seat right.

Thanks for the info on where and which way the "L" goes.

-HD
hd_superglide is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 06:29 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.