[Fot] CRANKSHAFTS Repairing a cracked crankshaft

[davehogye]

With Greg's recommendation I used Armando to do the work on a stock TR4 crankshaft which I'm about to put in my first TR race engine. All he does is crankshafts. At the same time he was working on my crank, he was doing few 250 V-12 Ferrari, a few V-12 Lamborghini, numerous 356, 911, and 911 RSR, 906, 908s and other Porsche cranks as well as a flat head Ford crank. His customers are from all around the country. Some were getting cracks repaired. There was a sea of crankshafts in his shop. He took about 5 weeks to do the work, but I was in no hurry. Armando was a pleasure to do business with and he is very enthusiastic and proud of his work. 

Dave Hogye 
----- Original Message ----- 
From: "Greg Solow" <gregmogdoc at surfnetusa.com> 
To: n197tr4 at cs.com, "Friends of Triumph" <FOT at autox.team.net> 
Sent: Saturday, August 28, 2010 3:15:29 PM 
Subject: Re: [Fot] CRANKSHAFTS Repairing a cracked crankshaft 

There are good crank grinding people who really know what they are doing. 
The best of them are able to repair cracks in steel cranks. Some years ago 
we rebuilt an AC Ace 6 cylinder engine. This was the single overhead cam 
engine designed and built by AC, not the Bristol engine.. The crank had 3 
cranks in it. The procedure is to grind the cracked area away until there is 
no more cracked material, then weld the crank back up with the proper alloy 
steel. The crank is then stress relieved and reheat treated, then reground 
to the proper size and configuration. Obviously this is a fairly expensive 
procedure and is only worth doing when the crank is an expensive, not easily 
replaceable piece. 
The technician who has done this for us in the past is Armando, at 
"custom crankshaft repair" in San Mateo. His phone number is 650 342-0568. 
He is an expert in the heat treatment of cranks. He has done the best, most 
accurate and consistently sized journals we have ever had done. His 
timeliness sometimes leaves something to be desired. 

Greg Solow 
_______________________________________________ 
fot at autox.team.net 

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