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Author Topic:   repairing cranks
holeshot
Dirt Maniac

Total posts: 119
posted November 09, 2005 08:41 AM  
just bought a 400 short block with 1 broken rod that messed up the rod journel pretty bad. took it to a shop and they said they could fix it but it would cost $500.00 in cluding reharding the crank. is it worth repairing? the guy i bought the crank from said it was a cola. also it is 20 on the rods and mains and is a stroker.

goinrcn44h
Dirt Freak

Total posts: 205
posted November 09, 2005 08:58 PM  
Thats way way steep... I have had way more than that done for half that or even more.last one I had done he welded straightened ground all journals , polished and with bearings for rod and mains was 254.00.
waterhouse motors in Tacoma,washington, ask for rick. at that rate even shipping it u will be way ahead.keep lookin for another place...
44H

oldfordmod
Dirt Full Roller

Total posts: 46
posted November 10, 2005 08:22 AM  
A welded steel crank is never as strong as before welding, even when its re-nitrided. I might use it for a backup but wouldn't want to put many laps on it especially if its in a big torque (HP) engine. Before I would spend that kind of cash, I would get a new one.

15a
Dirt Freak

Total posts: 354
posted November 10, 2005 01:47 PM  
Try Custom Crank Repair (650)342-0568. He can repair just about any crank. Give him a call.

Kromulous
Dirt Forum Champ
Total posts: 796
posted November 10, 2005 01:58 PM  
If it was a 37 lb, american forging, bad unit i might consider putting 3 to 4 hundred in it. Then its already at .020 under. How much longer will it last?

I believe you would be better served in buying a Howrds, American forged crank at about $750 to 800 and starting fresh.

Krom.

zeroracing
Dirt Forum Champ
Total posts: 1876
posted November 10, 2005 02:24 PM  
I have heard a howards cranks are very nice also. Another option would be callies. Both should be great. I think I also heard that cola is out of business.

goinrcn44h
Dirt Freak

Total posts: 205
posted November 10, 2005 07:34 PM  
I've had 2 separate cranks that were heated, straightened, welded, etc and had both spin 8100-8300 and never had an issue. in fact i've never had a crank issue. the majority of the time its related to the rods, rod bolts, main caps. mine produce around 630-650 or in that neighborhood so they are workin their but off. A steel crank that is redone properly and repolished and is straight and balancedis just fine at .010-.020-.030 its still larger than a small journal or way more than a honda journal so no worries in that department.
44H

holeshot
Dirt Maniac

Total posts: 119
posted November 11, 2005 11:49 AM  
thanks for the info, The 1st thing I said to the guy was I could by a new one for that price and he said that the repaired cola would be better than a scat or eagle. he also informed me cola had gone out of business and he had puchased some of there stuff from there shop.

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