Question if a ball hone is needed

havoc_squad

Senior Chief Petty Officer
Joined
Mar 5, 2011
Messages
711
Back when I was checking the old/original two stroke piston rings for the gap in the cylinder after the block was checked to be in spec by machine shop and they de-glazed it with cross hatching, the OEM ones had a very small surface area to measure end gap.

That was a problem because it made measuring the gap difficult, and light marks were made on the cylinder wall by the feeler gauge. I can still see the cross hatching marks where the mark is when looking at it from an angle, it just made a line with darker grey color.

Do I need to go and buy a ball hone of the correct size with 320 grit and re-do the 45 degree cross hatching on the cylinder for the new piston kits?
 

racerone

Supreme Mariner
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Dec 28, 2013
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36,528
I do not believe you can damage a cylinder wall by using feeler gauges to check ring end gap !
 

jimmbo

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May 24, 2004
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Don’t use a Ball Hone on 2 Stroke, Balls and Ports do not interact well together.
 

havoc_squad

Senior Chief Petty Officer
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Mar 5, 2011
Messages
711
Don’t use a Ball Hone on 2 Stroke, Balls and Ports do not interact well together.

To be more specific if I wasn't, a flex hone in the shape of a cylinder with small balls on it.

I am nearly certain it was the regular blade/stone style of hone that was detrimental/dangerous for use on two stroke ports because the stones could catch on the port edges.

I would like some source references for why something like a flex hone is a bad idea for two stroke cylinders.
 

jimmbo

Supreme Mariner
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May 24, 2004
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If you think the Regular Hones could catch on the Ports, then you really need to exam the Flex/Ball

Edit: the Balls and the Ports will chew each other up
 
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racerone

Supreme Mariner
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Dec 28, 2013
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If there are defects in the cylinder then the ball hone will hide them.----Using a ball hone makes no sense to me whatsoever !
 

F_R

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Jul 7, 2006
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28,195
To me, a "Flex hone" is one where the straight stones are held out against the cylinder wall by a spring. As contrasted by an adjustable hone where the stones are held in a straight arrangement, as contrasted by a ball hone which is like a giant bottle brush with ball-type stones.

A ''flex hone's" stones can catch in the big bypass holes in a loop-charged cylinder.
 
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