Solid roller guys and heavy HYD. guys
What is the best double sprign to run for a hydraulc cam withotu lifter collapsing?
I am running:
-FMS blower cam fast ramps but not as aggressive as XE-R stuff
-FMS/Crane springs, 1.85 installed height, 145 seat
-Yella Terra 1.7 rockers
-Comp R lifters
It's all set up for .010 lifter preload otherwise the lifters will not take the rpms.
I'm not sure about the Comp R lifters like PSJ is running, but the Schubecks are designed to have a maximum of .010-.012 of total lash in them... Joe (Schubeck) recommends running them with ~.001-.002 of positive lash, but mine are set up a bit wider than that (for now). Hopefully (crossing fingers), there is enough hydraulic action in them to take care of thermal expansion, etc..., but there is no way (barring a catastrophic failure of the lifter) that the lifter would collapse any more than .010 under ANY kind of spring load.
In any event, I paid ~$400 for them direct from Schubeck (http://www.schubeckracing.com/rollerhydraulica.html). As far as any details on them, I couldn't find anything on the Schubeck site so I just called 'em up one day and talked to Joe for ~30 minutes or so. At this point, I can't really comment on how well they work, as the car isn't really completely together at this point... certainly not together enough to take it out and beat on it.
Once the exhaust gets built and it gets fully tuned/adjusted, I'll let everyone know how it goes.



