55mm cam clearance

racerxo69 · 12-13-2009, 10:28 PM

anyone know if a 3.5" stroke crank with 2.1 journals with manley aluminum rods would clear a 55mm cam.

Mike Taylor 3601 · 12-14-2009, 09:17 AM

You need to mock it up and check w/cam degreed,I say it will be close, if does touch I would notch rods w/flycutter on bridgeport style mill get one where it misses by .050'' then you can cut other 7 exactly the same.I always notch all 8 to keep weights equal for easier balancing and to eliminate chance of having rods in wrong cylinder if only notched for cylinders that hit. also if notching will get into bolt, torque rods before notching so bolt will match notch.Don't have base circle of cam reduced or you will lose one of the benifits of 55MM cam.
Mike Taylor 3601

12-13-2009, 10:28 PM	#1
racerxo69 Junior Member Join Date: Sep 2006 Posts: 1 Likes: 0 Liked 0 Times in 0 Posts	55mm cam clearance anyone know if a 3.5" stroke crank with 2.1 journals with manley aluminum rods would clear a 55mm cam.

12-14-2009, 09:17 AM	#2
Mike Taylor 3601 VIP Member Join Date: Oct 2008 Location: Somerset,Ky Posts: 1,361 Likes: 333 Liked 279 Times in 96 Posts	Re: 55mm cam clearance You need to mock it up and check w/cam degreed,I say it will be close, if does touch I would notch rods w/flycutter on bridgeport style mill get one where it misses by .050'' then you can cut other 7 exactly the same.I always notch all 8 to keep weights equal for easier balancing and to eliminate chance of having rods in wrong cylinder if only notched for cylinders that hit. also if notching will get into bolt, torque rods before notching so bolt will match notch.Don't have base circle of cam reduced or you will lose one of the benifits of 55MM cam. Mike Taylor 3601