Question about 2007 Yamaha XT 660 R

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What piston ring goes in the top groove shiny or dark

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  • Douglas Hansen
    Douglas Hansen May 11, 2010

    The top ring might have a dot or a "t" on it.

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Shiny on top then dark ring in middle groove all marking face up.

ring groove

Posted on Mar 27, 2010

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Most 2 cycles have a pin in the piston groove that keeps the ring from traveling. The pin location (upper groove, lower groove position) will give you the indication. Most 2 cycle rings have an L shaped cut in the very end that mates with the pin in the groove. Otherwise the piston/ring assembly will not fit into the cylinder.

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On a 4 ring grove piston, does the 3 piece oil scraper rings go o the 3rd or 4th grove?


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Hello im having a problem repairing my pistons and rings on my motor bike. can you plz tell me if the piston rings are supose to spin all the way around or are they both ment to lock in the groves for them


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How do I install the compression ring into the cylinder of a sears model # 919165140?


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Other way is buy a ring spreader tool and a compression tool from any auto parts store. This will come with instructions and you'll get the hang of it in no time.

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What is the piston ring gap clearance for the ford laser


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2 Answers

I am changing piston and rings, my problem is that the ring are different, do you know which one go on the top, one is more black or dark than the oder.


Most rings are marked in one manner or another. They may have a dot on them, a angle cut on the inside towards the piston, or some other means of identifying which position it goes in and in which direction. If the two rings are different, there should be a paper to tell you how they go on the piston. Since you're asking this question here, I assume that this is not the case.

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I had to replase the piston and fogot how to put it back togther


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1 Answer

Piston rings positions


Hi johanjur
It is important that the rings all go in the right way up and in the correct order. The ring with the shiny edge may be tapered, the shiny edge then should be closest to the top. Check the rings themselves. There are often markings on them, and they generally face upwards. Hpethis helps you. Cheers
regards robotek

Jan 25, 2009 | 2003 ATK 125 4-stroke

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