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Old 12-16-2010, 10:27 AM
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Sgi Crankshaft

has anyone used one of these 400 sbc 4 inch stroke

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Old 12-18-2010, 04:22 PM
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Quote:
Originally Posted by allweatherracing
has anyone used one of these 400 sbc 4 inch stroke
No I haven't. Looked at their web site it appears to be another wanna be hot rod shop trying to start up with imported parts. Others of this type have spanned the range of junk to great even within themselves. As usual the Devil's in the fine print, so you put's your money down and takes your chances. If they take the junk back when made wrong, that's at least a start. Then all you have to do is hope it stays together when you run it.
Prices are OK for what they offer.

Beyond that I don't know squat about them.

Check out the machining on these rods in the picture. I havent seen tool chatter like that in forever. That's a dull tool taking too much bite, going too fast if I've ever seen it.http://www.sgiperformance.com/client...details&id=136 That doesn't necessarily mean they're bad parts, but the manfacturer sure was in a hurry.

Bogie

Last edited by oldbogie; 12-18-2010 at 04:27 PM. Reason: Keep thinking of things to say
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Old 12-18-2010, 06:11 PM
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While their address may be shown as being in California, Star Galaxy Incorporated(SGI) is Chinese.

If you run into Sunrey, being sold under the Eagle name, they are also Chinese.

Star Galaxy makes rods and cranks for a lot of the private label stores like ProPower, Probe, Wheeler, Herbert, KMJ, and several others I can't remember at the moment. Quality is about the same as Eagle, so like Eagle have them checked for tolerance, taper, and sizing by a machine shop before you just throw them in an engine.
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Old 12-18-2010, 06:26 PM
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It is my understanding that you not only have to worry about the final machining of some of this Chinese junk, you have to worry about the base metal the part is cast or forged from. I have heard all the horror stories of sweeping up the floor and dumping it into the cauldron. Don't have any idea if they are true or not, but it's enough to make me cautious. It has been said before many times and it's still true "YOU GET WHAT YOU PAY FOR."
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Old 12-20-2010, 09:03 AM
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sgi cranks

took the advice its Howard's or lunati thanks guys jack
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Old 12-20-2010, 09:22 AM
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I too, was nervous about parts from china. Some of our mainshafts are chinese, sell for less than the competitions similar product and have NO problems with them. The biggest thing to remember is IF the IMPORTER cared what he was selling, The chinese would make a superior product. Not supplying a control print or diagram of some type and relying on your vendor to create the print and to hold themselves to tight tolerences is scary stuff, regardless of nationality.

That being said, I have personally used Scat, Cola and Ohio cranks with good success.

Any crank you buy should be checked by a qualified machine shop before installation. Thats a few bucks well spent for peace of mind.

We tend to see a lot of chatter marks, but we pay for the tooling, so we call up the vendor and insist on a new tool, problem solved. Metallurgically speaking there are some questions, but the chinese have been casting iron a lot longer than we have, so if you ask them to make quality parts they can and will. As an aside I got a truckload of steel in from Ohio that was full of inclusions...its not a race problem its lack of attention to detail and that can come from anywhere
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