Roller rockers

Why don't you ask Ted???

Of course the valves that are open have tension on them. Adjust them only when the valves are closed and they are no where near opening or closing.

I know that they should be in tension when the valve is opening, but these seam to be excessive and especially when all the adjustment is taken off! I just posted this to get other peoples thoughts about this, of course I intend to get a hold of Ted Harbit. His e-mail address does not seem to be valid anymore but I am going to try to call him. Hopefully the number is correct.

The greater than stock ratio will create greater than stock tension on the adjusting screw. I wouldn't worry about it as long as you can get the proper clearance when closed.

Are you using stock Studebaker lifters ? If so, there shouldn't be a problem. The push rods seat in the bottom which would allow plenty of adjustment.

Jack

I failed to mention that I also have installed heavier springs that Ted told me to purchase from Fairborn. I have talked to Ted since I first posted this and he says it should be good to go with the combination of parts that I will be running. Yes, they are the original lifters.

Has someone in a previous life shaved a good bit off the heads? Leading to the clearance problem? Do you think thick head gaskets would gain you enough clearance even with the slight drop in compression?

Ray

PACKERBACKER wrote:

Have you done anything to enlarge the pushrod holes in the head? If not you may get a" bind" when using 1.6 or 1.7 Rockers.

The heads are new ones that I bought from SASCO for an older lower compresion engine. (This is an R2 engine) I had R3 valves installed with the ports cleaned up in back of the valves and was running it this way with half dished pistons since I rebuilt the engine early this year. Now that I am installing the roller rockers, I drilled the push rod holes out from 9/16" dia. to 5/8" dia. but will still need to grind a little more clearance at the top of the holes for maybe four of the pushrods. I do not think they are actually rubbing but they sure look close!