Cam and lifter types...3 types?? Solid, Roller, Hydraulic?
Melting Slicks
Joined: May 2001
Posts: 2,812
Likes: 4
From: Gig Harbor Wa
Re: Cam and lifter types...3 types?? Solid, Roller, Hydraulic? (Maurice)
A roller cam can either be solid or hydraulic. It just refers to the roller bearing that rides on the camshaft lobes. Usually, you can have quicker ramp rates with rollers which essentially has the valve open longer for the same duration numbers. The valve will reach full open sooner and start to shut later. This makes the valves more efficient. Since you are opening the valves quicker, there is more stress on the valve train.
There is also a lot less lobe wear since you don't have the bottom of the lifters sliding across the lobes.
There is also a lot less lobe wear since you don't have the bottom of the lifters sliding across the lobes.
Thread Starter
Safety Car
Joined: Jan 2001
Posts: 3,569
Likes: 1
From: Hawaii
Re: Cam and lifter types...3 types?? Solid, Roller, Hydraulic? (70 LS1)
So you always use solid lifters with a solid cam, roller with roller, and hydraulic with hydraulic? But roller can be solid roller or hydraulic roller?
Thread Starter
Safety Car
Joined: Jan 2001
Posts: 3,569
Likes: 1
From: Hawaii
Re: Cam and lifter types...3 types?? Solid, Roller, Hydraulic? (Maurice)
What type would this be?
http://dab7.cranecams.com/SpecCard/D...1=Display+Card
http://dab7.cranecams.com/SpecCard/D...1=Display+Card
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Re: Cam and lifter types...3 types?? Solid, Roller, Hydraulic? (Maurice)
That looks to be a solid roller. A solid cam will always give you valve lash in thousandths of an inch. A hyd will be 1/2 or 1 turn past zero lash depending on the cam.
