need advice on runnin hvy springs and solids
03-08-2012, 09:05 AM
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need advice on runnin hvy springs and solids I need some advice on running heavier springs and solid roller lifters. Im looking at running #225 seat and #560 open pressure and solid rollers on a turbo LS build. I could use some advice on rocker arms and pushrods.
TIA: Jay
TIA: Jay
03-09-2012, 06:43 PM
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.600" lift and prob 23 to 30 psi of boost. prob 7200 rpm plus. I know there can be alot of pushrod flex on the exhaust side d/t trying to crack open the exhaust valve against all that cylinder pressure.
There is a set of T&D shaft mounted rockers for sale on here and I almost committed to buying them. They seamed like the right way for me to go. I did some researching on here about them and my impression wasnt positive. So I am stuck on what to do. The Terra yellas are only rated for #400 and their heavier series ones are like $850.
Jay
There is a set of T&D shaft mounted rockers for sale on here and I almost committed to buying them. They seamed like the right way for me to go. I did some researching on here about them and my impression wasnt positive. So I am stuck on what to do. The Terra yellas are only rated for #400 and their heavier series ones are like $850.
Jay
03-09-2012, 06:45 PM
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I'm running adjustable Yella Terra's and Manton pushrods with my solid roller, with about 210 on the seat and 600 open. Also about to set up another pair for solid roller with 240 on the seat and 600 open, pretty much the same parts except for the springs. COMP springs for mine, K Motion for the new set. I never noticed anything on the YT literature about how much spring pressure they were rated for.
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03-10-2012, 01:14 AM
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driver56...
Are you running the platinum YT's that take 7/16 studs? vincihiperformance recommends the ultralites to #425 and the platinums to #500. YT's web site didnt show a spring rate limit, but they do say the platinums are good for solid roller.
I am not trying to reinvent the wheel here my setup isnt that radical. Since I wont be much over #500 the YT platinums will prob be fine for me. I am going to run heavier springs d/t boost not because of a radical cam. Im sure a radical cam hammering valves open against heavy springs is harder on rockers than a street cam with heavy springs.
TY: Jason
Are you running the platinum YT's that take 7/16 studs? vincihiperformance recommends the ultralites to #425 and the platinums to #500. YT's web site didnt show a spring rate limit, but they do say the platinums are good for solid roller.
I am not trying to reinvent the wheel here my setup isnt that radical. Since I wont be much over #500 the YT platinums will prob be fine for me. I am going to run heavier springs d/t boost not because of a radical cam. Im sure a radical cam hammering valves open against heavy springs is harder on rockers than a street cam with heavy springs.
TY: Jason
03-10-2012, 08:42 PM
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Yella Terra p/n 6638, not sure what they're called. Ran them at 7500rpm on a big half-mile dirt track, lots of time at WOT. No issues ..... yet......
