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Old 08-19-2005, 14:35   #1 (permalink)
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roller rocker stud conversion?

how strong are the roller rocker stud conversion kits from crane. the ones that just screw in the exhisting holes, no machining required.
i have a set currently on my heads and the advertisment says not recommended for solid tapped or solid roller lifters.
has anyone used these on there solid cam
should these not be used at all or is that just them saying that to be safe so they dont have to worry about you twisting to 8500rpms.
7000rpms would be my absolute max., here i am shopping for a new cam this whole while and remembered that it said not to use them with a solid set up. i guess this could throw a wrench in all my plans
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Old 08-19-2005, 17:14   #2 (permalink)
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Re: roller rocker stud conversion?

Quote:
Originally Posted by musclemustang8
how strong are the roller rocker stud conversion kits from crane. the ones that just screw in the exhisting holes, no machining required.
i have a set currently on my heads and the advertisment says not recommended for solid tapped or solid roller lifters.
has anyone used these on there solid cam
should these not be used at all or is that just them saying that to be safe so they dont have to worry about you twisting to 8500rpms.
7000rpms would be my absolute max., here i am shopping for a new cam this whole while and remembered that it said not to use them with a solid set up. i guess this could throw a wrench in all my plans
Are these the with the standard 5/16 bolt/stud?
If you are talking about running them with the solid cam with 605 thou lift, chances are you will be back in here asking why they broke. I also thought this was a mainly 1/4 race only car. Just use 7/16 studs and rollers.
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Old 08-19-2005, 17:23   #3 (permalink)
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Re: roller rocker stud conversion?

Well i run a 632 lift cam on my 4v heads for 3 years with the 5/16 bolt. It says they take up to 640 lift. I never had a problem with them but i wouldnt do it again.
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Old 08-19-2005, 18:02   #4 (permalink)
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Re: roller rocker stud conversion?

Don't use them, they break. I think Brenx was also using them at one time and had trouble too.
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Old 08-19-2005, 18:05   #5 (permalink)
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Re: roller rocker stud conversion?

Yep. The pedestal machining isn't that expensive for the gains in strength with 7/16 studs.
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Old 08-19-2005, 18:09   #6 (permalink)
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Re: roller rocker stud conversion?

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Originally Posted by TruBlu351
Yep. The pedestal machining isn't that expensive for the gains in strength with 7/16 studs.
I guess the issue is the heads will have to come off and be dissasembled to perform the machining, i wouldn't use the bolt on rockers, they wont cope with heavy valve springs, they are for mild Hyd applications only.
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