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Help with Ross Piston ring replacement

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1fast97gsx

15+ Year Contributor
4,520
17
Jul 6, 2003
Orland Park, Illinois
Someone please tell me if these rings work!

http://www.extremepsi.com/store/product.php…

I'm freshening up my motor and I have older Ross pistons, part # 99811 and it seems like they would work, but the title says only fits new piston with part number # 99737. Will these work or where can I order rings for mine?

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ROSS Replacement Racing Piston Ring Set: 85.5mm Bore (Only fits NEW piston # 99737)
Your #1 Source for In Stock Performance Parts
extremepsi.com
 
Yea I sent them an email and tried calling them earlier but got no answer / no response. If anyone knows the answer to this I would appreciate it. Thanks.
 
Older Ross pistons will not take the hew rings, I have run into this a few times.

The ring company that made them for Ross is out of business.

The new rings are made by Total Seal for Ross.

The difference is in the depth of the ring, the old pistons take a shallower ring than the new ones.

You have 3 options..

1) Send the pistons to Ross and have them cut to accept the new rings. (IIRC about $200 & 3-4 weeks)

2) Get a set of custom cut rings from total seal ( About $220 and a week)

3) Just buy a new set of pistons and rings.

I ended up getting a new set of custom rings, I can dig around and find the part number. I think I may have posted the part number on the forum last time this came up a year or two back.

They are a Pita to get, you have to go through a Ross Dealer to order them and get them.
 
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