Solid vs. Hydraulic cam...

[4C FED]

What differentiates a solid roller cam from a hydraulic roller cam?
Is there any difference in the materials that make up the cams?

 

[turbodig]

Re: Solid vs. Hydraulic cam...

What differentiates a solid roller cam from a hydraulic roller cam?
Is there any difference in the materials that make up the cams?

Typically, the difference in the materials has to do with the profile a solid roller cam has, and the need for it to withstand a lot of valvetrain stress.

You don't run a solid cam unless you're going to a fairly heavy race application. The lifts and durations are typically race-only grinds.

 

[SBNova]

Re: Solid vs. Hydraulic cam...

I have been told by Comp that my hydraulic roller cam I bought for my Vette can not be run with solid roller lifters. I wanted to extend the rpm range some, but they said its incompatible.

 

[Don W.]

Re: Solid vs. Hydraulic cam...

I have been told by Comp that my hydraulic roller cam I bought for my Vette can not be run with solid roller lifters. I wanted to extend the rpm range some, but they said its incompatible.

Quite true. As mentioned the profiles are different. Even if the "grind" was the same the cams are different on the ramps leading to the actual profile that determines lift, duration, etc. At least that is what I learned a loong time ago. A hyd cam on solid lifters will destroy your valve train as I understand it.