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Are used slightly damaged cams worth anything
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DRR Sportsman
posted
I know cams can be re ground. But is a used cam with a damaged lob worth anything?


Stephen Liss jr

 
Posts: 329 | Location: Wisconsin | Registered: April 28, 2008Reply With QuoteReport This Post
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Mailbox pole maybe...
 
Posts: 1265 | Location: USA | Registered: December 04, 2008Reply With QuoteReport This Post
DRR Top Comp
Picture of wideopen231
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no lamps just add gear to bottom.Going to need real long drill bit if want to run wire thru cam.LOL Been told they pretty much worth scrap steel price.




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Posts: 4237 | Location: Greensboro NC | Registered: May 24, 2011Reply With QuoteReport This Post
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Yes.
 
Posts: 9398 | Location: Madeira Beach Fl. | Registered: June 12, 2018Reply With QuoteReport This Post
DRR S/Pro
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Years ago I had a lobe on a big block Chevy roller cam welded then re-ground. I ran it for a while then sold it to a friend who knew it had been repaired. That cam is still rollin' along today.

Note: It depends on the extent of the damage, the cam material and the welding process, but yes they can be repaired. Just be aware, if they grind much off the base circle you might want to re-check the rocker arm / valve stem geometry again.

Bob
 
Posts: 3098 | Location: Lakeside, Ca | Registered: February 15, 2003Reply With QuoteReport This Post
DRR S/Pro
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I shipped a "slightly damaged cam" in one time to see if it could be reground. I wasted my money on freight.


Illegitimi non carborundum
 
Posts: 2340 | Location: OKC, OK | Registered: February 15, 2008Reply With QuoteReport This Post
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I recently had a solid roller reground by Bullet. Slight abnormal wear due to insufficient open pressure. Talked to tech prior to shipping, was told regrind was $ 150.00, new cam $ 450.00, said the core's are worth $300.00 if abnormal wear is not excessive. No welding was necessary. Worked for me.


Larry
62 Bel-Air 409
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Posts: 60 | Location: Castro Valley, CA State of Insanity | Registered: August 22, 2011Reply With QuoteReport This Post



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Picture of CURTIS REED
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quote:
Originally posted by Bubbletop409:
I recently had a solid roller reground by Bullet. Slight abnormal wear due to insufficient open pressure. Talked to tech prior to shipping, was told regrind was $ 150.00, new cam $ 450.00, said the core's are worth $300.00 if abnormal wear is not excessive. No welding was necessary. Worked for me.


Did they mention anything about the pre and post grinding lobe hardness?



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Posts: 2986 | Location: KIEFER, OK. | Registered: August 17, 2007Reply With QuoteReport This Post
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$300/ton



ΜΟΛΩΝ ΛΑΒΕ
 
Posts: 560 | Location: Republic of Texas | Registered: January 16, 2011Reply With QuoteReport This Post
DRR Sportsman
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quote:
Originally posted by CURTIS REED:

Did they mention anything about the pre and post grinding lobe hardness?


Thast the 64k question. I recently lost a lobe on a bullet regrind. We think maybe the regrind got past the heat treat maybe. It will be on its way back to them soon to look at. Im not complaining just asking


"I am not ashamed to confess I am ignorant of what I do not know."
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Posts: 995 | Location: Las Vegas, NV | Registered: April 14, 2004Reply With QuoteReport This Post
DRR S/Pro
Picture of David Covey
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I have several cams that have been hurt. All were good cams that made power. I have tossed around the idea of either regrind or have them welded up and re grind.But the question of durability after wards is in my mind.
I don't understand why they could not be re hardened after the repairs.
Has anyone considered or have thought of nitriding after a repair? I have had crankshafts nitrided in the past, especially cast cranks.
Here is an article explaining the process and what they have been using it on.

Comp Cams Nitriding

And here is an idea of the costs ,

Nitriding and repair cost

Dave


"It is usually futile to try to talk facts and analysis to people who are enjoying a sense of moral superiority in their ignorance." -Thomas Sowell
 
Posts: 3313 | Location: American By Birth Texan By The Grace Of God  | Registered: April 29, 2004Reply With QuoteReport This Post
DRR S/Pro
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What I have been told by folks in the Cam Business is that some cores have become very difficult to find. Recently I tried to find a AMC 287/327 core and a BBC with the LS firing order, I drew a blank on both.

Repairing the BBC might be the only current option.

Bob
 
Posts: 3098 | Location: Lakeside, Ca | Registered: February 15, 2003Reply With QuoteReport This Post
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Mark is the go to tech adviser at Bullet, I'm sure he can answer all your questions.


Larry
62 Bel-Air 409
79 Cole TR-2 SunsetRaceCraft 565 RIP TRACY
260 Eliminator Eagle XP HP500EFI
NO MO BOMA
WELL DONE USN SEAL TEAM 6
Proud Deplorable
 
Posts: 60 | Location: Castro Valley, CA State of Insanity | Registered: August 22, 2011Reply With QuoteReport This Post
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