tubtar
Well-Known Member
I think 195 # on the seat is kind of low for a solid roller....especially in a boosted application.
Spring pressure does one thing....in two different ways.
It keeps the roller on the lobe , both at max lift where it keeps the valve from floating and on the seat where it keeps it from bouncing.
I don't know if you're running a ton of boost , M.D. , but I think excessive manifold pressure can blow the valves open without enough spring. Granted , it is only the amount of lash , but there are times when you don't want cylinder filling.
My cam has .4176 lobe lift with 1.6 rockers. I am using Comp 943-16's which have 240# @ 1.9 " and 598# @ 1.25
To the O.P. , you only need to answer one question. Do you mind turning wrenches ?
Yes ? Hydraulic.
No ? Solid.
Solid rollers rev higher , make more power , but require periodic attention.
With good parts , they can stay set for a long time......but should be checked a couple times a season anyway.
Hydraulics........put away wet , add gas , oil , drive , repeat.
If you decide to go solid roller , call Tim at Bullet (662 ) 893-5670 and tell him exactly what you want from your car. he will have questions too , and between the two of you , you will come up with exactly what you need.........and it may well be a hydraulic. He doesn't get paid any more for making you a solid or hydraulic.
But he is very good at what he does.
Spring pressure does one thing....in two different ways.
It keeps the roller on the lobe , both at max lift where it keeps the valve from floating and on the seat where it keeps it from bouncing.
I don't know if you're running a ton of boost , M.D. , but I think excessive manifold pressure can blow the valves open without enough spring. Granted , it is only the amount of lash , but there are times when you don't want cylinder filling.
My cam has .4176 lobe lift with 1.6 rockers. I am using Comp 943-16's which have 240# @ 1.9 " and 598# @ 1.25
To the O.P. , you only need to answer one question. Do you mind turning wrenches ?
Yes ? Hydraulic.
No ? Solid.
Solid rollers rev higher , make more power , but require periodic attention.
With good parts , they can stay set for a long time......but should be checked a couple times a season anyway.
Hydraulics........put away wet , add gas , oil , drive , repeat.
If you decide to go solid roller , call Tim at Bullet (662 ) 893-5670 and tell him exactly what you want from your car. he will have questions too , and between the two of you , you will come up with exactly what you need.........and it may well be a hydraulic. He doesn't get paid any more for making you a solid or hydraulic.
But he is very good at what he does.
