BINGO!! That's the trick I was looking for. It's simple, I have
the parts for it, and it should work like a charm!
NB: My father in law suggested that I do the same thing with a
piston but it didn't work as well as hoped, I couldn't get it to stay
where I needed it ( 10 mm below deck height)
THANKS,
Lester
On Feb 16, 2007, at 9:25 AM, Peter C. wrote:
> You can insert a ring and square it with a piston inverted, then
> measure on that plane.
> Peter C.
> ===
> At 09:18 AM 2/16/2007, derf wrote:
>
>> Hi,
>> Yes, but when the tool is out of the ideal plane it will give you
>> a slightly
>> larger reading. Take several measurements and go with the
>> smallest you
>> get. You can eyeball a telescoping gauge and get pretty close.
>> The problem
>> with measuring cylinders is that they are bigger in the middle
>> than at the
>> top or bottom, if there is any wear at all. There will be a ridge
>> at the
>> top. Pistons, too, are barrel shaped with a larger diameter in
>> the middle
>> than at the top or bottom.
>>
>> You will probably get the best reading with an internal mic. Hold
>> one end
>> of the mic against the cylinder wall and open it up until it
>> touches the
>> other side without free play. You kinda get a feel for it. Do
>> this several
>> times and your lowest reading will probably be your best reading.
>> Again,
>> anything out of the ideal plane will measure larger. Make sure
>> your inside
>> mic has round tips.
>>
>> Don't be surprised if your cylinders aren't perfectly circular.
>> Cheers,
>> Derf
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