Forward Motion Stage 3 cnc head valve issues

[speedfreek500]

Hello, Does anybody have a part number for a 44mm valve with .325 tip number?

Or I even could use a number for a -.050 keeper.

The issue I have is, The rocker arm touches the retainer before the valve tip on the intake side. The valves are correct for a 782 head. The exhaust side has no issues. I called around for a -.050 keeper for a 8mm valve and nobody makes one.
Thanks Brian


Edit, I am using comp cam beehives #944 with Ls1 retainers. The groove in the valve stem is .050 to low.

roller cam not a slider.

[bakes]

what about lash caps?

[speedfreek500]

Lash caps didn't work either. We tried different keepers/retainers with and with out lash caps.

[zin]

Custom valves will fix it, and you could correct the valve-train geometry in the process, but definitely not the "cheap and easy route".... but might be on par with custom locks!

Mike

[speedfreek500]

Thanks Mike, I may go and get a slider cam untill I can find the correct valves. It's at a friends house in his garage all torn apart and needs to put his car back in the garage before he goes on vacation.

[Shadow]

Did this issue arise out of using the Beehive's? Or did it already exist with stock style retainers/springs?

[turbovanman²]

Who made the valves?

[BadAssPerformance]

Did it have the little valve tip extenders on it when you got it from FM? Those should work?

[speedfreek500]

The springs that came with it had the same issue, Unsure of the valve brand and no tip extenders.

Looked a slider cam rocker today. Still gonna hit the retainer before the valve tip.

[glhs727]

clearance the rocker arms where they are hitting the retainers.....

[zin]

If they are just barely hitting, adding some clearance might just be the "elegant solution"... If it would seriously compromise the arm then another solution would be in order.

Mike

[speedfreek500]

I did grind one rocker to clear, It left me with 0.020 of a step on each side. Not good enough for me so that idea didn't work.

Thanks to Todd (4 L bodies) I will have keepers that are -0.60 down the stem more! Problem maybe solved.