Hydraulic roller questions

[gnxtc2]

Few simple questions:

1. What is the highest rpm did you guys spin the motor with a hydraulic roller?

2. With which lifters?

3. What kind of valve lash?

4. Seat/open spring pressures?

Thanks

Billy T.
gnxtc2@aol.com

 

[Otto J]

I dont have a TSM motor,But i have gone fast with a hydraulic roller
its a 226-226 speed -pro lifters ,just set at 0 lash,SHifts at 7100
valve springs are BB chvy Beehive 1.550 diameter with titanium retainers
Not wuite sure of pressures though

 

[lazaris]

Otto,

How large did you machine the heads for those springs. I opened mine up to fit a 1.430 spring. I'm afraid to open them up wider because to much of the spring will hang of the edge. I'm assuming your using GN-1's.

 

[Otto J]

Tom at champion did them,So i would call him
And they are GN1s not Rs

 

[Russ Merritt]

26918s work well too and easier to fit. Spun mine to 7200 on the dyno, still makin power. 157 seat pressure, 330 open. Speed Pro lifters, 1/2 turn from zero lash.

 

[lazaris]

Russ,

I dont have enough room with the cam I'm using to coil bind with those springs.