Re: hemi rocker arm to retainer clearance.
[Re: johnzgarage]
#2535824
08/13/18 08:19 PM
08/13/18 08:19 PM
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Joined: Jan 2011
Posts: 4,785 Utah and Alaska
astjp2
master
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master
Joined: Jan 2011
Posts: 4,785
Utah and Alaska
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Have you checked the ratios? I would do that first, compare to your cam specs and then decide if they are worth grinding on. Mine were all over, wound up with StageV rollers and Dvorak stands that widen out the spread...Tim
1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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Re: hemi rocker arm to retainer clearance.
[Re: johnzgarage]
#2535834
08/13/18 08:42 PM
08/13/18 08:42 PM
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Joined: Jan 2003
Posts: 7,489 Minnesota
Hemi_Joel
master
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master
Joined: Jan 2003
Posts: 7,489
Minnesota
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With stock rockers, I assume that the springs are not outrageously stiff. I've taken .040" But cutting anything at all weakens it, and increases the risk of failure.
[img]http://i.imgur.com/boeexFms.jpg[/img]31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
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Re: hemi rocker arm to retainer clearance.
[Re: johnzgarage]
#2535946
08/14/18 12:29 AM
08/14/18 12:29 AM
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Joined: Oct 2004
Posts: 3,097 back in Georgia
dthemi
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master
Joined: Oct 2004
Posts: 3,097
back in Georgia
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Are you using up retainers? Common to have .100 up retainers to gain install height. If you are, go to a standard, or down retainer. Obviously spring pressure will go up, and you'll need to check for bind, or retainer to guide clearance, but you can also usually cut the spring pocket deeper, and keep the same spring pressure with the retainer change. Lash caps, like mentioned can help your problem, but might make the geo, or starting position worse.
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Re: hemi rocker arm to retainer clearance.
[Re: johnzgarage]
#2535996
08/14/18 02:38 AM
08/14/18 02:38 AM
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Joined: Dec 2007
Posts: 12,587 Great Neck,LI,new york
hemi-itis
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 12,587
Great Neck,LI,new york
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My last go round I ended up having to use a -50 thou retainer to gain the needed clearence,,,,,then had to buy new springs to go with the new titanium retainers. Thanks again Marsh Performance for your expert advise and quick delivery Had to take off them purty polished springs
Last edited by hemi-itis; 08/14/18 02:40 AM.
HEMI-ITIS has no cure. My condition is fully BLOWN!!
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Re: hemi rocker arm to retainer clearance.
[Re: Cab_Burge]
#2536058
08/14/18 10:14 AM
08/14/18 10:14 AM
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Joined: Jan 2003
Posts: 13,363 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,363
Marion, South Carolina [><]
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I used lash caps on mine when I mocked mine up for the first time and found the DLI roller rockers were hitting the titanium retainers. The caps got me the clearance I needed and have been in use since 2006 w/ no issues at all. I mention that b/c I've heard a lot of people question the durability of lash caps.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: hemi rocker arm to retainer clearance.
[Re: johnzgarage]
#2536096
08/14/18 11:51 AM
08/14/18 11:51 AM
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Joined: Oct 2007
Posts: 4,206 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,206
New York
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If you geo is on target now, lash caps will ALWAYS make it worse. If it's not on target now, they may make it better or worse. Whatever you do to the lever's underside, blend the cut back into the body and polish it, leave no sharp edges.
Boffin Emeritus
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