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04-20-2013, 04:38 AM | #1 |
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B Model Scat Crank
B Model Scat Crankshaft Has anyone used 1
I know they use A model conrods What do they use as rear main seal and thrust lip they looks a little strange in there photos Thanks Colin |
04-20-2013, 07:54 AM | #2 |
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Re: B Model Scat Crank
Why not contact SCAT and ask??
Paul in CT |
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04-20-2013, 06:19 PM | #3 |
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Re: B Model Scat Crank
Did contact them said the seal was new style but no idea which 1
As for the thrust lip missing on there crank no real answer was hoping someone who who had fitted 1 could tell me if they needed to do any modifications or if it fitted straight in Colin |
04-20-2013, 06:25 PM | #4 |
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Re: B Model Scat Crank
They use the SBC rear seal. Thrust can be set up for either center or rear main thrust. You tell them what you want when you order it. Try to talk to Tom Lieb when you call them.
I've only fit them to new builds. Blocks were machined with the crank in hand. - |
04-20-2013, 08:20 PM | #5 |
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Re: B Model Scat Crank
OK... what is SCAT??
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04-20-2013, 08:22 PM | #6 |
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Re: B Model Scat Crank
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04-20-2013, 08:51 PM | #7 |
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Re: B Model Scat Crank
Or what is left on the ground by game you are following during the hunt!
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04-21-2013, 12:13 AM | #8 |
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Re: B Model Scat Crank
SCAT is the name of the company in Long beach that makes crankshafts,rods and many other engine parts, quite a bit of it for General Motors. Tom is a collector of early vehicles out of the teens,real nice guy.
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04-21-2013, 12:41 AM | #9 |
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Re: B Model Scat Crank
Thanks for the info makes sence to use sbc seal
also told the photos are not The B/C Crank Cheers Colin |
04-21-2013, 01:19 PM | #10 |
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Re: B Model Scat Crank
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04-21-2013, 01:48 PM | #11 |
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Re: B Model Scat Crank
The A/B crank is forged 4340.
- |
04-21-2013, 01:58 PM | #12 |
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Re: B Model Scat Crank
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04-21-2013, 02:03 PM | #13 |
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Re: B Model Scat Crank
Burlingtons are forged 4340 also.
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04-21-2013, 06:08 PM | #14 |
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Re: B Model Scat Crank
Eubanks and Drake made cast nodular (ductile) iron cranks for A's and I think B's several years ago. I haven't heard anything about Eubanks and Drake since about 2006. Volume 1 issue 2 of Model A Times had a rudimentary story about them.
If I could get my hands on one, I'd take a cast nodular iron crank for a banger any day over a forged! They are plenty strong, many high power big blocks from various OEM makers used them as production parts as they proved both superior and cheaper than forged. The two big advantages: 1) They are stiffer (flex less) than a forging and due to the grain structure they readily dampen shock waves, converting the energy internally into heat. 2) Superior bearing surface oil retention and oil drag, plusses with plain bearings like inserts or cast babbitt. Disadvantage: There is a limit, perhaps 250 hp on an A sized crank. That's well beyond my limit! If a new one were to be cast with 80+% counterweighting it would certainly be a welcome 'buzz killer' for those nasty I-4 second order harmonics and permit an extremely light flywheel, taking loading off the rear flange. |
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