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06-16-2009, 05:33 PM
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CC Member
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Join Date: Apr 2004
Location: Hyannis,
MA
Cobra Make, Engine: ERA FIA #2039
Posts: 255
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Not Ranked
Roller Lifter Question
Does anyone know how much lifter "lift" a stock Ford roller lifter will tolerate before it starts to lift the dogbone? This would be in a mid 60's retrofit block.
I have a 1967 "Mexico" block with a retrofit Compcam with .365" lifter "lift" and there is a strange tapping noise. Could it be the dogbones being lifted up and down by the spider?
Any experiece here?
Pat
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06-16-2009, 05:57 PM
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CC Member
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Join Date: May 2001
Location: California,
Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
Posts: 6,592
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Not Ranked
My over sight, sorry.
__________________
Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way 
Last edited by Rick Parker; 06-16-2009 at 06:04 PM..
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06-16-2009, 06:02 PM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,433
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Not Ranked
If the cam is a retrofit roller, you would need almost .600" of valve lift. If it's a non-retrofit cam, it will happen a lot sooner.
But, even if it does lift the dog bones a little, that's not a big issue. You might hear the noise, but I kinda doubt it.
If you have dog bones, you MUST use a spider to keep them in place.
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06-16-2009, 06:03 PM
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CC Member
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Join Date: May 2001
Location: California,
Ca
Cobra Make, Engine: NAF 289 Slabside Early Comp Car with 289 Webers and all the goodies. Cancelling the efforts of several Priuses
Posts: 6,592
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Not Ranked
Do you have enough spring pressure?
__________________
Rick
As you slide down the Banister of Life, may the splinters never be pointing the wrong way
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06-17-2009, 03:45 PM
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CC Member
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Join Date: Apr 2004
Location: Hyannis,
MA
Cobra Make, Engine: ERA FIA #2039
Posts: 255
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Not Ranked
Roller Lifters
Well I guess its time to take it back apart and see what's what. I will probably buy a set of Compcam lifters after reading about lifter pump up in their ads.
Am I the only one stimulating the economy?
Pat
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06-17-2009, 05:51 PM
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CC Member
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Join Date: Oct 2002
Location: Eagle,
Ne.
Cobra Make, Engine: 1966 Lone Star 427SC.
Posts: 4,301
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Not Ranked
hehe !, "Am I the only one stimulating the economy" ?
I agree pat. I've had my very nice 428FE for sale, with no lookers !
I'm building a KC 428 side oiler. (not rich either) 
__________________
Regards,
Kevin
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06-17-2009, 07:00 PM
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CC Member
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Join Date: Feb 2007
Location: Colorado Springs,
CO
Cobra Make, Engine: Backdraft, supercharged Coyote
Posts: 2,433
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Not Ranked
Quote:
Originally Posted by ack fia
Well I guess its time to take it back apart and see what's what. I will probably buy a set of Compcam lifters after reading about lifter pump up in their ads.
Am I the only one stimulating the economy?
Pat
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Ford makes about the best roller lifters on the market. That's what many pro builder use; including Keith Craft and Gordon Levy. |
06-18-2009, 11:43 PM
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CC Member
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Join Date: May 2008
Location: San Jose CA,
CA
Cobra Make, Engine: SPF_R_/BRG/FRBoss302/327CI/FordEFI/Under_Car_Exh/
Posts: 2,523
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Not Ranked
if the roller cam is not a retrofit roller , but a roller made for a stock 5.0, you may be having oiling issues with the shorter lifterbores on the older blocks.
__________________
Steve SPF 2734 MK3 / Brock Coupe #54- panavia.com
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