Why does a solid roller cam make more power than hyd.......
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From: Ft. Lauderdale, FL, USA
Why does a solid roller cam make more power than hyd....... I mean, what is taking place inside to make more?
Also, what else needs to be changed, or can you just do a cam?
Also, what else needs to be changed, or can you just do a cam?
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From: Magee MS
I know they are better b/c valve float isn't an option with the solid roller set up. But I think the lobes on any roller cams are more bulkey(wider on the sides and don't come to as much of a tip). But the difference off a solid roller and a hydraulic roller I'm not sure about.
Josh S.
Josh S.
hydraulic cam: a cam using lifters that has a valve-controlled plunger inside its body, preloading the pushrod at the closed valve position through oil pressure lift: distance the valve is depressed from its seat when closed to the peak valve lift when open fully
mechanical (solid) cam: a cam using lifters with only a radiused contact face in which the pushrod end sits without internal valves or other complexity; requires periodic lash setting
mechanical (solid) cam: a cam using lifters with only a radiused contact face in which the pushrod end sits without internal valves or other complexity; requires periodic lash setting
FormerVendor
Joined: Nov 2001
Posts: 3,065
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From: Houston, Tx.
You get the valve open quicker and usually higher so the valvetrain intensity is much higher. You do not have all the seat timing also causing exhaust and intake reversion that you do on a hydraulic cam.
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From: Ft. Lauderdale, FL, USA
Originally Posted by racer7088
You get the valve open quicker and usually higher so the valvetrain intensity is much higher. You do not have all the seat timing also causing exhaust and intake reversion that you do on a hydraulic cam.
(and of course whatever parts that need to go with the solid roller)
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From: Ft. Lauderdale, FL, USA
Originally Posted by jrp
hydraulic cam: a cam using lifters that has a valve-controlled plunger inside its body, preloading the pushrod at the closed valve position through oil pressure lift: distance the valve is depressed from its seat when closed to the peak valve lift when open fully
mechanical (solid) cam: a cam using lifters with only a radiused contact face in which the pushrod end sits without internal valves or other complexity; requires periodic lash setting
mechanical (solid) cam: a cam using lifters with only a radiused contact face in which the pushrod end sits without internal valves or other complexity; requires periodic lash setting
what??????
Parts needed: adjustable rockers, lifters, pushrods, springs, retainers, locks and cam
Postives- Ability to run more lift, duration and rpm = more power
Negatives- have to be adjusted regularly, high spring pressure can crack valve seats, shorter interval to change springs and overall cost
Usually lsX people use this on primarily race cars to get max power when drivability is not a concern.
Postives- Ability to run more lift, duration and rpm = more power
Negatives- have to be adjusted regularly, high spring pressure can crack valve seats, shorter interval to change springs and overall cost
Usually lsX people use this on primarily race cars to get max power when drivability is not a concern.
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FormerVendor
Joined: Nov 2001
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From: Houston, Tx.
Originally Posted by Quickin
So, with my 436 stroker for instance, how much RWHP and RWTQ would I pick by JUST changing to a solid roller and nothing else?
(and of course whatever parts that need to go with the solid roller)
(and of course whatever parts that need to go with the solid roller)
The solid will pick up the low end and idle vacuum due to this lower seat timing and overlap 99 per cent of the time.
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