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51 Cub Piston rings - how to install

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Kurt in Va Beac

01-22-2007 18:51:36




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Hi All, I just got my cub engine back from the engine shop and want to start to put back together. I have new oversize cast iron flat top pistons and need to install the ring set - 'Red Power' by Perfect Circle. The directions are pretty good except for the oil ring, talks about the thin steel rings that go on either side of the oil ring, but then there is another thin "clip spring" with 7 sides that completes a "circle". This looks like it would go in the grove flat side wraps around the piston. Where it's job is to keep the oil ring an equal distance from pushing in against the piston. So that's my question, is this the way it should be installed? Or Not? The engine shop tossed my old pistons so I do have them to compare.
thanks for the help, you guys on the forum are great!!
Kurt

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El Toro

01-23-2007 04:14:23




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 Re: 51 Cub Piston rings - how to install in reply to Kurt in Va Beach, 01-22-2007 18:51:36  
Jim has covered the installation very well, but when you have the rings and expander installed make sure you move the new rings in the piston lans (groove). Hal
PS: Coat the cylinder walls and pistons with lots of engine oil and bearings too.



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Janicholson

01-22-2007 18:58:28




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 Re: 51 Cub Piston rings - how to install in reply to Kurt in Va Beach, 01-22-2007 18:51:36  
Exactly.
The expander ribbed piece goes next, then the rails. wind the rails in without scratching the piston. place the rail gaps at least 45 deg. apart on the circufrence, with the expander gap inbetween. JimN



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Kurt in Va Beach

01-22-2007 19:19:06




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 Re: 51 Cub Piston rings - how to install in reply to Janicholson, 01-22-2007 18:58:28  
Thanks Jim! Talk about a quick reply. If only putting the engine back together were to go that fast! THANKS AGAIN!!
kurt



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El Toro

01-23-2007 04:17:05




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 Re: 51 Cub Piston rings - how to install in reply to Kurt in Va Beach, 01-22-2007 19:19:06  
I should have said so you can move the rings freely after they are installed. Hal



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Kurt in Virginia Beach

01-23-2007 05:02:22




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 Re: 51 Cub Piston rings - how to install in reply to El Toro, 01-23-2007 04:17:05  
Thanks Hal! That's something I would have missed. Kurt



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