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Old 09-07-2012, 07:40 PM
andy35321 andy35321 is offline
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Just want to know

What is Everybody using to measure cylinder bore. I am working on my snapper. Got it taken apart and I measure piston ring end gaps with feeler guage. But it is like almost 10 over spec. I tried to measure bore with some cheap harbor freight telescoping guages and digital caliper. Is there a easier way to measure bore. Should I just buy standard rings and just put back together and maybe it will last another year or not. I heard this engine is a piece of junk anyways. It is a Briggs 7 horsepower intek. Heard they had a lot of problems out of intek. Problem was it was getting hard to start. And would start off real slow. I done a leakdown test and it was leaking past rings. Anyways thanks for any help. Also I would like to say but didn't want to make another thread on it. But piston slapper and restrorob and Dutch and bigfish i want to thank you guys for taking the time out of y'alls busy schedule and coming on here and answering questions. I would like that to be me one day. Y'all don't have to share your secrets. But you do and I just think that is cool of you guys to do this. Thanks. Just wanted to share my thoughts along with my question.
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Old 09-07-2012, 07:47 PM
larryinalabama larryinalabama is online now
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Do they even make oversized rings and pistons???
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Old 09-07-2012, 08:07 PM
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piston slapper piston slapper is offline
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Andy...oversizing small engines doesn't happen too often..usually cheaper to replace the block..
I don't use my telescopic bore gauge very often...
I insert a new ring in the bore and measure the ring gap..
Then..I use a 3 legged spring hone with 4 inch stones to deglaze the cylinder.
This gives me a true picture of the cylinder walls..shiny spots are bad...
Hope this helps..
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Old 09-07-2012, 09:14 PM
agrostis agrostis is offline
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I was told that there wasn't enough metal cast into the cylinder wall's on most small engine's to do any boring. Is that true ?
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Old 09-07-2012, 09:38 PM
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piston slapper piston slapper is offline
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The first oversize on small engines is .010...unlike automotive which is .030..
The rule of thumb is to see if the OEM offers oversize pistons and rings..if they do you can bore it..
Kohler offers replacement rings that are slightly larger and do not require boring the cylinders....
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Old 09-07-2012, 09:46 PM
agrostis agrostis is offline
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That's good information, thank's.
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