Hyd Roller to Solid Roller
Thread Starter
Pro
Joined: Jan 2004
Posts: 535
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From: Darwin, Australia NT
Hyd Roller to Solid Roller
Is there much gain to be had going from a hyd roller to a solid roller?
Presently have 454 12/1 rec port heads and 238/244 @112 hyd roller. Thinking of a solid roller say 245/250 or there abouts. Its a lot of expense so Id want to believe there is a bit to gain.
Presently have 454 12/1 rec port heads and 238/244 @112 hyd roller. Thinking of a solid roller say 245/250 or there abouts. Its a lot of expense so Id want to believe there is a bit to gain.
Thread Starter
Pro
Joined: Jan 2004
Posts: 535
Likes: 1
From: Darwin, Australia NT
Presently my low rise dual plane manifold is holding me back, power flattens off by only 5000rpm but when I get a single plane manifold, I'll set a max rpm of 6500, aiming for peak power close to 6000rpm.
Running factory steel crank and 7/16 dot rods on a purely weekend street car. M21 with 3.7 rear. A slightly bigger Hydraulic roller may be a simpler option.
Running factory steel crank and 7/16 dot rods on a purely weekend street car. M21 with 3.7 rear. A slightly bigger Hydraulic roller may be a simpler option.
Team Owner
Joined: Apr 1999
Posts: 21,953
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From: Reno Nevada
2024 C3 of the Year Finalist- Modified
You can run solid rollers on a HR cam. I'm doing it comp cams just told me to set the lash at .012
I would find out from the cam companies what the max rpm is for a BBC HR cam is for your larger duration. If they feel like your out of bounds the SR is the only way to go.
I would find out from the cam companies what the max rpm is for a BBC HR cam is for your larger duration. If they feel like your out of bounds the SR is the only way to go.
Melting Slicks
Joined: May 2000
Posts: 2,148
Likes: 1
From: Chandler AZ
6000rpm is absolute max for any hydraulic lifter- unless you get something like the hydra-rev from AFR:
http://www.airflowresearch.com/pages/hydra_rev.htm
I'd say that's your best way to add those last 500rpms and not have the expense and constant adjusting of a solid roller...
Edit: aw crap they only list them for small blocks! But check around I'm sure there's other rev-kits available....
http://www.airflowresearch.com/pages/hydra_rev.htm
I'd say that's your best way to add those last 500rpms and not have the expense and constant adjusting of a solid roller...
Edit: aw crap they only list them for small blocks! But check around I'm sure there's other rev-kits available....
Last edited by gcrouse; Dec 26, 2004 at 12:00 PM. Reason: additional info
