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View Full Version : Jesel Shaft Mounted Rocker project



Slysc
07-24-2009, 10:37 AM
I've been slowly creeping along in my progress towards getting Jesel Shaft mounted rockers adapted to my 3.8L heads.

I machined a 1 piece steel base that bolts directly to all the pedistals and then made blocks which hold each end of the rocker shaft. The base had to be cut with the angles for each rocker to match the valve angles.

I will have to make a new base because my first base did not make enough allowance to offset the rocker axis for my longer pivot length rockers. Stock pivot length is 1.65".

Anyway, below are some pictures showing how the base needs to be re-made further back to keep the roller tip centered on the valve.

David Neibert
07-24-2009, 11:57 AM
I've been slowly creeping along in my progress towards getting Jesel Shaft mounted rockers adapted to my 3.8L heads.

I machined a 1 piece steel base that bolts directly to all the pedistals and then made blocks which hold each end of the rocker shaft. The base had to be cut with the angles for each rocker to match the valve angles.

I will have to make a new base because my first base did not make enough allowance to offset the rocker axis for my longer pivot length rockers. Stock pivot length is 1.65".

Anyway, below are some pictures showing how the base needs to be re-made further back to keep the roller tip centered on the valve.

Interesting stuff. How high are you planning to rev the motor ?

David

Slysc
07-24-2009, 01:11 PM
I am trying to build it for 8500 rpm.

David Neibert
07-24-2009, 01:27 PM
I am trying to build it for 8500 rpm.

Wowser !! :eek:

David

old_coot
07-24-2009, 01:31 PM
Holy Moly---thats buzzing it......got a scatter shield for the transmission?............Dan

Slysc
07-24-2009, 01:32 PM
The bottom end is built for it, the turbo should flow that much, the titanium valves, locks, keepers should help, the double springs are up to it, now it's just a matter of rockers and lifters being able to take it.

Slysc
07-24-2009, 01:34 PM
No scatter shield. Aluminum flywheel with a pretty stout clutch. Maybe I'll add some 1/2" plate steel to my cowboy boots.;)

Pablo94SC
07-27-2009, 08:45 PM
Wow Dan! That thing is going to scream!

old_coot
07-28-2009, 09:22 AM
No scatter shield. Aluminum flywheel with a pretty stout clutch. Maybe I'll add some 1/2" plate steel to my cowboy boots.;)
May want some cast iron drawers to protect other vital parts too.