Re: keep wearing out my T&D rockers
[Re: ccdave]
#2375219
09/22/17 09:35 PM
09/22/17 09:35 PM
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Joined: Mar 2009
Posts: 1,169 Virginia Beach, VA
Old School
OP
super stock
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OP
super stock
Joined: Mar 2009
Posts: 1,169
Virginia Beach, VA
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This is why I like to use Comp Ultra Pro Magnum rockers on street cars with big boy valve springs. Those look interesting and they say they can handle up to 850 pounds of open pressure.....
68 cuda formula S 588" bb 5sp 70 CUDA CONVERT 500" 5SP (SUBLIME) 70 CUDA CONVERT 500" 5SP (PLUMCRAZY):TOO MUCH HORSEPOWER, IS ALMOST ENOUGH!
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Re: keep wearing out my T&D rockers
[Re: Old School]
#2375294
09/23/17 12:44 AM
09/23/17 12:44 AM
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Joined: May 2008
Posts: 5,399 Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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I have about 2000 miles on my T&D rockers, ran them on the MW victors with the PAC1325 springs, and currently with the stiffer 1326 springs. Not using any oil restrictors to the heads on mine? I haven't had issues (with the rocker arms) so far, just the Edelbrock rocker stands.
Last edited by 451Mopar; 09/23/17 12:45 AM.
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Re: keep wearing out my T&D rockers
[Re: Old School]
#2375386
09/23/17 11:03 AM
09/23/17 11:03 AM
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Joined: Oct 2007
Posts: 4,210 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,210
New York
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if the rocker body bores are not wore out
660 bronze insert
Boffin Emeritus
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Re: keep wearing out my T&D rockers
[Re: polyspheric]
#2375489
09/23/17 02:36 PM
09/23/17 02:36 PM
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Joined: Sep 2005
Posts: 1,328 St. Louis, MO
mopardamo
pro stock
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pro stock
Joined: Sep 2005
Posts: 1,328
St. Louis, MO
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if the rocker body bores are not wore out
660 bronze insert This is the way to go if it were up to me. I'd also check the OD of the shaft in multiple areas. Something is amiss!
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Re: keep wearing out my T&D rockers
[Re: Old School]
#2375520
09/23/17 03:20 PM
09/23/17 03:20 PM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,514
So. Burlington, Vt.
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The OP says the bearings and shafts are not worn....... So it shouldn't be an oil supply problem. That being said, I usually run a .060 restrictor with Indy heads that are externally full time oiled.
From what I'm reading, it sounds like the bearing races are loose in the bodies. To me, that's an indication the bores in the rocker bodies have distorted.
So far, no one who has posted has run as many miles on these rockers as the OP with the same kind of spring loads he has.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: keep wearing out my T&D rockers
[Re: Old School]
#2375527
09/23/17 03:32 PM
09/23/17 03:32 PM
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Like the title says, I keep wearing them out. I get maybe 4000 miles out of them. all on the street. So, this is not the first set to have this problem? I don't know how aggressive the Indy R1 lobes are, but maybe they're not really "street friendly" and - in conjunction with those stiff springs - you're simply wearing parts out that fast wracking up miles on the street.
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Re: keep wearing out my T&D rockers
[Re: Old School]
#2375556
09/23/17 05:01 PM
09/23/17 05:01 PM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,514
So. Burlington, Vt.
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Another question I have is...... What is the actual installed height of the springs? If someone set the springs up to the now popular .050-.080 from coil bind at full lift, that would have the installed height pretty short for the 1225 spring and only .650-.670 lift. Set up in that scenario, the springs could be well over 300lbs closed.
Also, I've used PAC 1225's a number of times, and they are usually several pounds stiffer than spec as they come ootb.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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