Crankshaft grinding?

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CptKelly
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Crankshaft grinding?

Post by CptKelly » Sun Jun 05, 2011 01:10

Who have you found to do the best job at the least cost, for a crank grind. I have used Aircraft Specialties before, and they do nice work. Seems to me that they are a bit pricey though. Has anybody else out there had a crank ground who can make a recommendation?

Mike

Paul Agaliotis
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Re: Crankshaft grinding?

Post by Paul Agaliotis » Mon Jun 06, 2011 16:30

Mike,
I have one at ECI right now for grinding. I think it's about 200 to certify, about 250 to grind and if you go ,+020 it adds another 200 or so. check their site at ECI.aero
Paul
Mailing Adress : Paul Agaliotis 2060 E. San Martin, San Martin,Calif. 95046

CptKelly
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Re: Crankshaft grinding?

Post by CptKelly » Tue Jun 07, 2011 09:42

Thanks Paul. I wonder why they charge more for a .020 grind?

Mike

N86250
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Re: Crankshaft grinding?

Post by N86250 » Tue Jun 07, 2011 11:23

Most places supply a new bearing set with their regrinds. The .020 bearings are not common and are not cheap. jrh

Paul Agaliotis
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Re: Crankshaft grinding?

Post by Paul Agaliotis » Tue Jun 07, 2011 16:13

Mike,
The plus .020 requires the crank to be nitrided. Not all small 4 cylinder cranks were nitrided, it's based on serial numbers.

The bearings used to be twice as much as the STD or +.010, but the price has come down a little bit.
Paul
Mailing Adress : Paul Agaliotis 2060 E. San Martin, San Martin,Calif. 95046

geneL3c
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Re: Crankshaft grinding?

Post by geneL3c » Thu Jun 23, 2011 22:16

Mike , The .020" regrind , as Paul states , requires nitriding because the grinding process
( beyond .010" ) goes through the original surface hardening of the crankshaft . Since this is a modification of the original factory specifications , it requires an STC which is included in the price by ECI .

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