Would you use these cams - damage pics
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Road Warrior
Joined: Jun 2009
Posts: 1,347
Likes: 2
From: Michigan
Would you use these cams - damage pics
Bought a set of used 255 cams, and noticed the one cam has some nicks on the edge of the cam. as you can see just barely touching the bearing surface. opinions on would you use them or not?
Road Master
Joined: Nov 2009
Posts: 997
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From: Charlotte, N.C.
If you got a good price on them I would go ahead and install them. The end of the cam serves no purpose that small little indentation in the bearing track will cause no problems with oil flow or bearing damage unless it is a raised surface, and from the pic It doesn't look like it. I would definitely check the cams for trueness since there is impact damage on that one, if they are straight they are good to go.
Club Member
Joined: Jun 2007
Posts: 45,429
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From: Bedford UK
I would guess that during manufacture these are part machined, then heat-treated before final precision grinding. After heat-treatment a batch of them are probably tumbled together in abrasive stuff, to clean them up, which is where the small marks you see come from. As sporacer says, they were there before the final machining was done.
Seasoned HDF Member
Joined: Apr 2006
Posts: 10,675
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From: Billings,Mt.
Like the others said the dents were in them before final grinding.If they were damaged,the diameters at the ends would have raised edges.
You could mic the diameters to see if they are spec.
You could mic the diameters to see if they are spec.
Last edited by 1flhtk4me; Nov 17, 2010 at 07:20 AM.
Road Warrior
Joined: Jun 2009
Posts: 1,348
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From: Florida
I used to work for a company producing high performance camshafts for all sorts of vehicles and the golden rule was; NEVER fit secondhand cams or lifters. Reason being once fitted, the cam and lifters wear together and become 'matched' . If I was forced to I might risk a very good used cam with NO signs of wear but ALWAYS fit new lifters.
Account Retired
Joined: Oct 2009
Posts: 3,245
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From: Here
I would be more concerned with the wear marks on the cam lobes. Looks like the guy was using dino oil. I would compare them to a new set for wear. JMO
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Road Warrior
Joined: Jun 2009
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From: Michigan
the camera flash makes those look worst then they are, they are less looking worn then my stock set with 4k on them -3k of which were with syth.
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From: East of the Sun, West of the Moon
there ain't enough savings (and never will be) $$ wise in this purchase to risk the consequences of what might happen after they're installed if they're not true. I'm no machinist, but then again I'm no tire specialist either and I would NEVER put a blemished tire on a vehicle that I own. My safety, my passenger's safety, and the 24+k investment I have in this bike doesn't warrant using used parts. I know people do it all the time but not I. my .02 worth. :-)
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Road Warrior
Joined: Jun 2009
Posts: 1,347
Likes: 2
From: Michigan
having our machinist check for trueness, he already stated the nicks don't even touch the bearing surface when he looked at it thru his little magnifying thingy. He also stated as mention here those nicks were there before machining.