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#1
08-22-2020, 06:53 PM
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Cam lobes
Here is a before and after of a lobe from last years damage. I got most of it cleaned up with a file. I was wondering since this is a billet, if the hardening process is deep enough that this cam could be run again?
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Illinois Outlaw Gassers 6.27@107 9.97@131 |
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#2
08-22-2020, 08:25 PM
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you can send it in to see if it can be reground, might require longer pushrods if so?
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#3
08-22-2020, 08:55 PM
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Cleaned up with a file ?????? Your lifter would be rubble in a matter of minutes.
Get it re ground, only hope. |
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#4
08-22-2020, 08:59 PM
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Not a specific answer but a fwiw.
I was running a UltraDyne solid roller cam with 0.4300" lobe lift when one lifter went bad and damaged the lobe. I sent it to Tim at Bullet Racing for inspection with the intention of having it reground with the same .050" duration but with a 0.4176" lobe lift. It was ok to do so without affecting the heat treat depth and the base circle was hardly changed enough to even mention. But I did ask though. No need for new pushrods. .
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) 5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE |
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#5
08-22-2020, 10:19 PM
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I had a broken a HR lifter break a wheel on a billet cam and CC fixed it with the same specs as original. Looked just like your cam lobe. I would not trust it just filing it.
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1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule. |
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#6
08-23-2020, 05:36 AM
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Yes, send it out to the manufacturer, as they can fix it like new!
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#7
08-23-2020, 09:34 AM
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I was just bored yesterday and wanted to see how it would clean up instead of throwing it on my scrap pile. Its a comp cam. 280/284 .440 lobe.
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Illinois Outlaw Gassers 6.27@107 9.97@131 |
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#8
08-23-2020, 10:35 AM
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I believe the metal on the top was debris from the damage , not from the cam itself.
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Illinois Outlaw Gassers 6.27@107 9.97@131 |
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