Very good My friend, I will be checking into the GP2 With Rich a little
dipper tonight.
There is currently a GP3 grind in place, that will come out real soon,
because of displaced set screw, that did not receive its dose of lock tite.
Compression is currently 9.33 with some first class head porting, and larger
valves of its older brothers.
I asked for 9.25, so I am hoping not to have to mill much more off when we
replace cam.
Its currently holding DCOEs with long tube headers, that I have become very
good at dialing in.
But, never the less will becoming off this winter, and replaced with it re
polished and balanced original intake, minus its water pluming, and SUs.
The interior of those cast intakes is horrible, mine had the look of a
concrete joint.
Also thinking about the 1.55 Roller Rocker setup.
This letter just came in the E box from Rich.............Placing the screw at
the other end may be a little better if it falls
out but it would still drop the pressure drastically in the entire shaft.
The original rocker shaft has the oil outlet holes at the bottom of the
shaft with a flat spot ground to distribute the oil across the rocker.
Valve spring pressure holds the rocker up against the shaft making it
difficult for much oil to get around the shaft and out the hole in the
top of the rocker. Oil can escape out along the shaft on the side away
from the pedestal. The original oil feed to the rocker assembly is metered
by the groove in the rear journal of the cam. To feed more oil volume
and pressure we like to install an external oil line from the oil
pressure gallery to the bolt on the rear of the head feeding in to the
rocker assembly.
My roller rockers have needle bearings at the shaft and at the roller.
The oil outlet holes in the shaft are in the top of the shaft so the
needles on the bottom have full contact on the shaft. Oil flows between
and around the ends of the needles to lubricate all the needles. A nylon
washer seals between the shaft and rocker to keep oil from escaping on
the side away from the pedestal. Oil flows around the end of the bearing
on the pedestal side and through channels to the roller tip and push rod
cup. This oiling system allows oil to flow much more freely than the
original setup and may, in some cases eliminate the need for the
external oil line.
Oh yes, the fun, and fine line of smooth / power.
Don
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