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Registered
Join Date: May 2002
Location: Lake Elsinore, CA
Posts: 842
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crankshaft ID
Hello. Can anyone help me identify my crankshaft. I beleive it to be an SC crank, but the rod journal size is larger than I read an SC should be. Here is what I measure.
Main dia 60mm Rod dia 55mm Flywheel bolts 9 Stroke 70.4mm Thanks John |
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11-02-2014, 11:15 PM
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Registered
Join Date: Jun 2003
Location: Camarillo, Ca.
Posts: 2,418
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John,
It is most likely a 74.4 stroke crank from a 3.2/3.3
__________________
Aaron.  F.S. 1965 Solex engine w carbs/cleanerBurnham Performance https://www.instagram.com/burnhamperformance/ |
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11-03-2014, 06:41 AM
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Registered
Join Date: Jan 2004
Location: CT
Posts: 11,538
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With 60 mm mains and 55 mm rods, it could also be a 3.6 crank.
Post a pic and we will be able to tell.
__________________
Tom Butler 1973 RSR Clone 1970 911E 914-6 GT Recreation in Process |
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11-03-2014, 07:25 AM
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Registered
Join Date: May 2002
Location: Lake Elsinore, CA
Posts: 842
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Thanks for the help guys. I am pretty sure I measure 70.4mm stroke. With the nine bolt flange it must be a carrera 3.0, early 930 3.0, or SC crank. I read SC rod journals are 53mm. I will check on my math again and work on the pictures.
Thanks John |
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11-03-2014, 01:13 PM
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Registered
Join Date: Oct 2008
Location: Nash County, NC.
Posts: 8,481
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A 3.0 from. A Carreras 3.0 uses a 6 bolt flywheel, 2,7 crank.
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11-03-2014, 01:54 PM
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Registered
Join Date: May 2002
Location: Lake Elsinore, CA
Posts: 842
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Here are some pictures. I recalculated my stroke measurments and I came up with 75.6mm
This does not seem that accurate. I expect to find 74.4 or 76.4. Can anyone ID this crank from the pictures? I measured a rod journal width. I came up with approx 22.6mm Thanks John   
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11-03-2014, 02:06 PM
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Registered
Join Date: Jun 2003
Location: Camarillo, Ca.
Posts: 2,418
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That is a 74.4 stroke crank from a 3.2
__________________
Aaron. F.S. 1965 Solex engine w carbs/cleanerBurnham Performance https://www.instagram.com/burnhamperformance/ |
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11-04-2014, 08:21 AM
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