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veedubnut
Samba Member
Joined: November 21, 2007
Posts: 310
Location: St. Pete, FL
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 Posted: Mon Jul 06, 2009 2:24 pm Post subject: Chevy or VW journals? |
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| I see these options alot when looking at crankshafts. What's the difference and why? |
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dubkrzy
Samba Member
Joined: July 02, 2006
Posts: 485
Location: One step behind
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| Posted: Mon Jul 06, 2009 4:44 pm Post subject: |
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Chevy rod journals are smaller, so less clearancing is involved.
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| vwracerdave wrote: |
| always modify the cheapest part and never modify the most expensive part. |
| Glenn wrote: |
| Sure... you can take a grinder to them. You can also use an adjustable wrench to assemble it. |
| Jake Raby wrote: |
| That looks like Tom Jones |
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vwracerdave
Samba Member
Joined: November 11, 2004
Posts: 15599
Location: Deep in the 405
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| Posted: Mon Jul 06, 2009 5:03 pm Post subject: |
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Use VW journals for 78mm and smaller cranks. Use Chevy journals for 82mm and larger.
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2017 Street Comp Champion - Thunder Valley Raceway Park - Noble, OK
2010 Sportsman ET Champion - Mid-America Dragway - Arkansas City, KS
1997 Sportsman ET Champion - Thunder Valley Raceway Park - Noble ,OK |
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miniman82
Samba Swamp Donkey
Joined: March 22, 2005
Posts: 9515
Location: Southern Maryland
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| Posted: Mon Jul 06, 2009 5:21 pm Post subject: |
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No hard and fast rule to it, Dave. I have a VW 82 crank with stock rods and one of those pre-clearanced cases, it dropped right in with plenty of room to spare. Personally, I'd rather have the additional journal overlap on the longer cranks, it adds life.
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Build thread: http://www.thesamba.com/vw/forum/viewtopic.php?t=212747
| Glenn wrote: |
| satterley_sr wrote: |
I just wanted to bitch but I'm getting no sympathy. |
Welcome to the Samba. |
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dubkrzy
Samba Member
Joined: July 02, 2006
Posts: 485
Location: One step behind
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| Posted: Mon Jul 06, 2009 5:29 pm Post subject: |
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I also have an 82mm crank and pre-clearanced case with stock clearanced rods, but I still had to clearance the cam.
Probably wouldn't have had to clearance the cam if I had used chevy journals.
_________________
| vwracerdave wrote: |
| always modify the cheapest part and never modify the most expensive part. |
| Glenn wrote: |
| Sure... you can take a grinder to them. You can also use an adjustable wrench to assemble it. |
| Jake Raby wrote: |
| That looks like Tom Jones |
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gonebuggy
Samba Member
Joined: June 23, 2005
Posts: 691
Location: Canada
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| Posted: Mon Jul 06, 2009 7:16 pm Post subject: |
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| miniman82 wrote: |
| No hard and fast rule to it, Dave. I have a VW 82 crank with stock rods and one of those pre-clearanced cases, it dropped right in with plenty of room to spare. Personally, I'd rather have the additional journal overlap on the longer cranks, it adds life. |
Total agreement. |
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