Ground Cranks - Team Camaro Tech
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post #1 of 5 (permalink) Old Apr 9th, 08, 02:02 PM Thread Starter
 
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Ground Cranks

Hey guys,

I have 6223 crank that has been ground .020/.020

What does this mean for an SHP application in terms of strength? I have read that this crank was Tuftrided and grinding the crank removes this coating. Is this a big deal, or am I still safe using this crank.

Hate to need to get a new crank.

thanks,
Joel
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post #2 of 5 (permalink) Old Apr 9th, 08, 04:26 PM
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John
 
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Thumbs up Re: Ground Cranks

I have used plenty of 10/10 & 20/20 cranks in street HP engines that have lived long and very happy lives
The coating is not that big a deal in the big picture of things.
These forged cranks were very stout and as long as the crank has been properly machined and prepared it should be just fine unless you are planning on lots of flogging.
If you just aquired it and are unsure of it true past, I would recommend you have it carefully checked and polished by a reputable crank-shop if this hasn't been done. They will be able to give you a better assurance it will fit your needs.

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post #3 of 5 (permalink) Old Apr 10th, 08, 08:09 AM
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Don
 
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Re: Ground Cranks

If you are cutting a crank for what ever reason, this is the time to do some oil hole chamferring ( sp) . Useage of soft bearing will help.

Don
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Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968

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post #4 of 5 (permalink) Old Apr 10th, 08, 12:14 PM
 
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Re: Ground Cranks

I wold not worry about cutting a crank down. Pro stock often runs a very small rod journal and those are put to some serious power.
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post #5 of 5 (permalink) Old Apr 10th, 08, 12:27 PM
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Patrick
 
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Re: Ground Cranks

My crank is cut: rods .040 and mains .030 and see's 7000 plus rpm daily! Engine is in sig.

69RS/SS,383,10:1cr,4.10,60ft1.6sec,1/[email protected],1/[email protected],Vicjr,RPMheads,750dp, Proform main body, cam,246*-250*@.050,.510,522,1.6rr,700r4,3200stall
383 IS SOLD!
Building a 489BBC

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