miliman13
15+ Year Contributor
- 2,389
- 610
- Jan 1, 2011
-
tampa,
Florida
Really neat thread!
I noticed some talk about clearances and oil pressure.
Just wanted to provide some reference
for my forged rotating assembly with squirters, my
PTW clearance is 0.003-0.004"
Rods and Mains to crank journals clearance is 0.002"
Rod big end to crank side clearance is 0.004-.006"
I use diesel 10w-40
oil pressures at 750rpms is 10-16 psi
but I also did this to the block and to the tear drop were head meets block

My goal was to use the thicker oil to increase a lill pressure at the crank surfaces - to hopefully aid against excess flow (starvation)
Aid in PTW lubrication and also reduce the overall high pressures our engines are known for
I'm also not using any of the mods like the kiggly head pressure thing
Compared to the FSM i dont think im as loose as I originally thought.
I noticed some talk about clearances and oil pressure.
Just wanted to provide some reference
for my forged rotating assembly with squirters, my
PTW clearance is 0.003-0.004"
Rods and Mains to crank journals clearance is 0.002"
Rod big end to crank side clearance is 0.004-.006"
I use diesel 10w-40
oil pressures at 750rpms is 10-16 psi
but I also did this to the block and to the tear drop were head meets block
My goal was to use the thicker oil to increase a lill pressure at the crank surfaces - to hopefully aid against excess flow (starvation)
Aid in PTW lubrication and also reduce the overall high pressures our engines are known for
I'm also not using any of the mods like the kiggly head pressure thing
Compared to the FSM i dont think im as loose as I originally thought.
,
, can’t wait to get that installed, so I’ll be soon listing my B1H 4 bolt diff AND my J1A 3 bolt non lsd diff if anyone’s interested, I also recently got my glow shift trans temp gauge, I get my assorted color 18awg wire spools tomorrow to extend my wideband and temp gauge harnesses, so that’s fun, and soon I’ll finally get my own 1 ton engine hoist so I can yank the motor out and tear it down, stay safe and stay tuned