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#1
11-14-2012, 03:02 PM
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Regrind Cams and Base Circle
Regrind cams are the only source so what does that mean for the base circle? What other parts need to change to accommodate for these cams in a stock motor?
__________________
 69 OHC ZH Sprint Hurst 3 Speed 3:55 (1 of 213) 99 Valkyrie 1520cc Flat 6 108hp/110tq - For Sale http://sohcsix.yuku.com/forums/1/OHC-lounge Wanted: 1969 OHC "H" Camshaft |
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#2
11-14-2012, 03:12 PM
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If the base circle is smaller, you can put a flat washer under the lifter to lift it up, or mill the cam housing.
One of the design advantages the Cammer had was a "Hollow Flank" in the lobe profile. It allowed for steeper ramps on the cam to allow the reduced valvetrain weight to operate at a higher RPM. Make sure the reground cam has the hollow flank cut into it and is not an egg shaped lobe. IIRC it requires a 6" diameter cutting wheel, not the typical 12" diameter wheel the cam houses typically have. |
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#3
11-15-2012, 10:15 PM
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you need to shim at both ends Bill
there are still some repro cams left for E grinds but not H. Glenn sold an NOS H a few years ago for $500 I think. Ive had alot of H cam regrinds in past,but the cam grinder and I had a fallout and he destroyed the patterns that I bought and paid for.
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Everything comes and goes Pleasure moves on too early And trouble leaves too slow |
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#4
11-15-2012, 10:20 PM
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Quote:
I have three contacts at the moment that claim that can cut a "H" cam with the profiles they have.
__________________
69 OHC ZH Sprint Hurst 3 Speed 3:55 (1 of 213) 99 Valkyrie 1520cc Flat 6 108hp/110tq - For Sale http://sohcsix.yuku.com/forums/1/OHC-lounge Wanted: 1969 OHC "H" Camshaft |
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#5
11-16-2012, 06:47 AM
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whats wrong with the one you have?
polish lobes and journals,parkerize and replace followers that were sacrificial
__________________
Everything comes and goes Pleasure moves on too early And trouble leaves too slow |
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#6
11-16-2012, 03:11 PM
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Quote:
__________________
69 OHC ZH Sprint Hurst 3 Speed 3:55 (1 of 213) 99 Valkyrie 1520cc Flat 6 108hp/110tq - For Sale http://sohcsix.yuku.com/forums/1/OHC-lounge Wanted: 1969 OHC "H" Camshaft |
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#7
11-16-2012, 05:34 PM
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There was an article a few years ago in HPP or Smoke Signals on the cams.
It talked about the reground cam and its effects on the geometry I think. Pretty interesting reading at the time. 
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#8
11-16-2012, 06:54 PM
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Quote:
I did a few articles but it was many years ago.
__________________
Everything comes and goes Pleasure moves on too early And trouble leaves too slow |
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