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solid roller vs hyd roller profile comparison

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Old 11-11-2023, 01:08 PM
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Default solid roller vs hyd roller profile comparison

Anyone made the switch from hyd roller cams to solid roller? looking for comparison numbers on duration to avoid reversion.
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Old 11-11-2023, 01:28 PM
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What about solid roller lifter on hydro lobe?
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Old 11-11-2023, 04:54 PM
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I've thought about that as well with a tight lash ( .004 - .006) but hydraulic lash ramps are pretty aggressive because they can rely on the hydraulic cushion to moderate the initial hit. Once a solid starts opening, they have much higher open rates than hydraulic, thus the 20 plus degrees duration more @.200 lift that i wouldn't take advantage of with a hydraulic profile.

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Old 11-12-2023, 07:58 AM
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Originally Posted by underpsi68
What about solid roller lifter on hydro lobe?
I have run solid lifters on a hydraulic roller for a season. I played around with lash from around .004-.008 just to get it as quiet as possible. Replaced solids with some Johnson hydraulic's last season with no issues to the cam that I could see.
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Old 11-12-2023, 08:12 AM
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I ran 2 hydraulic roller cam lobe cams with solid rollers. Both were custom for me. It all depends on the lobe. It is best to contact the cam manufacturer and get their advice, if you can do it or not. Both were 010 lash. If the lash is too tight, the valves can hang open when cold, not good.

One of my friends with a turbo sbf installed solid rollers on his comp cam. Comp said np. He picked up .3 and 3mph in the 1/4 mile with it.
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Old 11-12-2023, 09:30 AM
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Originally Posted by 94sylvan
Anyone made the switch from hyd roller cams to solid roller? looking for comparison numbers on duration to avoid reversion.
I love my SR’s (inverse radius lobes) from mike jones (jones cams) for my 565’s. They pull extremely hard, easy on valvetrain and sound BA. Many including myself have run solids on hyd rollers with success but I wanted to go a different route this time and very happy.
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Old 11-12-2023, 04:06 PM
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Originally Posted by getrdunn
I love my SR’s (inverse radius lobes) from mike jones (jones cams) for my 565’s. They pull extremely hard, easy on valvetrain and sound BA. Many including myself have run solids on hyd rollers with success but I wanted to go a different route this time and very happy.
What are the specs?
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Old 11-12-2023, 07:40 PM
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Originally Posted by underpsi68
I ran 2 hydraulic roller cam lobe cams with solid rollers. Both were custom for me. It all depends on the lobe. It is best to contact the cam manufacturer and get their advice, if you can do it or not. Both were 010 lash. If the lash is too tight, the valves can hang open when cold, not good.

One of my friends with a turbo sbf installed solid rollers on his comp cam. Comp said np. He picked up .3 and 3mph in the 1/4 mile with it.
I've run solids on my HR lobes since '06 my builder has done it for 30 yrs. Also spoke with Comp and they said no problem and with their HUC lobes it's a good combination.

Last edited by Rookie; 11-12-2023 at 10:28 PM.
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Old 11-12-2023, 07:53 PM
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Originally Posted by Rookie
I've run solids on my HR lobes since '06 my builder has done it for 30 yrs. Also spoke with Comp and they said problem and with their HUC lobes it's a good combination.
When running solids on a hyd profile, what do you do with spring pressures? The solid roller is lighter, but your still a cast cam so you can't get too crazy with pressures.
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Old 11-12-2023, 08:36 PM
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Originally Posted by 94sylvan
When running solids on a hyd profile, what do you do with spring pressures? The solid roller is lighter, but your still a cast cam so you can't get too crazy with pressures.
Higher pressure on solid lifters.

I would only run 8620 core, if possible.
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