Question about 1996 Geo Metro

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Piston ring installation on 96 geo 1.3 liter 4 cyl engine.

The new rings on this motor did not come with instructions on how the rings are to be installed.I need to know piston ring gap and wich way they go, numbers up or down?

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  • deanmcmn Dec 01, 2008

    I went to the website of the ring manufacturer it was no help. These are new pistons being installed in an engine that has been checked and machined by a reputable machine shop. My engine manual simply states to install the rings per maufacturer's instructions.

  • deanmcmn Dec 02, 2008

    Thanks for the input Howardepgco, I was finally able to get a phone # and they do have a tech line. The company is D&J Rock products. The rings are installed numbers and name stamp facing up.



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If you are that deep into things you will do poorly without a good manual. Are the pistons new or used?If they are used you need to completly clean the ring grooves in the pistons or the new rings will stick and gall.Did you remove the ridge at the top of the cylinders? If not there is a good the top ring will either break or bust the upper land off of the piston. Hopefully you had a machine shop go through the block. Check the ring manufacture's web site. I am sure they will have tips and instructions.

Posted on Nov 29, 2008

  • Howard Lester Dec 01, 2008

    Who made the rings. I have friends in the business. They may have some insite.



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I think this TSB will solve your problem even know your car is older.

NO: 18-05-96 Rev. A
GROUP: Vehicle Performance
DATE: May 24, 1996

SUBJECT: **Intermittent Rough Idle**
NOTE: This bulletin supersedes technical service bulletin 18-05-96 dated February 16, 1996 which should be removed from your files. The subject description was printed incorrectly and is marked with **ASTERISKS**
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An intermittent rough idle may occur during cold engine operation, within 3 minutes after engine start up, in rainy weather and temperatures of approximately 30° to 50°F.

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