Re: 1621-16 ultra pro magnum rockers convert to ball adjusters?
[Re: lockjaw-express]
#2444422
02/01/18 01:44 AM
02/01/18 01:44 AM
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Joined: Aug 2014
Posts: 562 Ohio
lockjaw-express
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OK, I am running a Comp Custom Solid Flat Tappet Cam (Dwayne Porter) and Comp solid (Porter - Nitrided) lifters.
Would you know what diameter and length of Ball/Ball pushrod to use?
Also, what brand should I buy, and I assume they would be hollow with push rod oiling that would NOT be used, since the cup would block the hole?
Sorry for all the questions, but I have never worked with shaft mounted/shaft oiled rocker systems.
Thank you, Mark
PS: Randy also had the RPM/Performer Heads milled .060, so that might affect pushrod length...
Last edited by lockjaw-express; 02/01/18 02:22 AM.
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Re: 1621-16 ultra pro magnum rockers convert to ball adjusters?
[Re: lockjaw-express]
#2444570
02/01/18 12:49 PM
02/01/18 12:49 PM
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Joined: Jan 2003
Posts: 14,492 So. Burlington, Vt.
fast68plymouth
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Changing to ball style adjusters, assuming you could find some with the correct oiling configuration, will lower the effective ratio of the rockers since it will dramatically move the point of the rocker to pushrod pivot.
The correct way to use the new rockers is to change the pushrods.
You will need to get a checking pushrod to determine the required length for your particular application.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 1621-16 ultra pro magnum rockers convert to ball adjusters?
[Re: lockjaw-express]
#2444642
02/01/18 02:25 PM
02/01/18 02:25 PM
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Joined: Jan 2003
Posts: 14,492 So. Burlington, Vt.
fast68plymouth
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If you feel you need to relocate the rockers on the heads contact Mike at B3 Racing Engines. He will make you some custom spacers. "Shims" aren't really the way to go.
3/8" diameter .080 wall heat treated pushrods would be more than adequate for that application.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 1621-16 ultra pro magnum rockers convert to ball adjusters?
[Re: lockjaw-express]
#2444747
02/01/18 05:22 PM
02/01/18 05:22 PM
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Joined: Jan 2003
Posts: 14,492 So. Burlington, Vt.
fast68plymouth
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That's it.
With the Comp rockers, the adjusters should be set to one turn from "seated" when checking for pushrod length.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 1621-16 ultra pro magnum rockers convert to ball adjusters?
[Re: lockjaw-express]
#2444873
02/01/18 09:30 PM
02/01/18 09:30 PM
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Joined: Jan 2003
Posts: 14,492 So. Burlington, Vt.
fast68plymouth
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I Live Here
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So. Burlington, Vt.
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Put a feeler gauge the correct thickness between the rocker and valve, then set the adjustable pushrod length.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: 1621-16 ultra pro magnum rockers convert to ball adjusters?
[Re: lockjaw-express]
#2448415
02/08/18 11:34 AM
02/08/18 11:34 AM
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Joined: Aug 2014
Posts: 562 Ohio
lockjaw-express
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A picture of the finished engine!
I hope Randy would approve!
Last edited by lockjaw-express; 02/08/18 11:34 AM.
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