Michael Mayben
IHPA Tech Moderator - Retired & No Longer Online
I've been meaning to finish this item up for several months, so yesterday I did!
Over the years I've fabbed several types of oil pump drives for shop use. Ihon currently has some very inexpensive tools I fabbed for those who don't wanna screw around with making one.
The tool described here allows me to install it in the engine being diagnosed and clamp in place using the oem distributor hold down. Then ya can start the drill motor and lock the trigger and let it run unattended while manually turning the crankshaft for cam bearing feed alignment.
It can also be used to for prelubing a fresh motor, or one that has been sitting awhile in order to pump up the lifters, oil the bearing surfaces, etc.
I haven't finished rigging up a "stop" to prevent the drill motor frame from rotating, that is next. I'm also looking for a 12vdc motor that I can adapt and mount permanently to the shaft for field use when needed. Minimum motor speed needed for doing this is about 1500rpm, 2500>2800rpm would be best.
I hated to trash a delco distributor, but this one has a shaft that is in really bad shape (lack of lube), and the portion of the mechanical advance unit that is oven-brazed to the top of the shaft was nearly rotted way. I did manage to salvage the drive gear for future projects.
So the distributor was gutted and then cleaned up and the damaged shaft area polished (along with the bushings). I cut down the length of the bushing at the top to allow more room for installing the split collar (1/2" id) and bronze shim. Then removed the butched advance drive (by grinding) so that the drill chuck could center up.
The unit was then re-assembled using some winzer products spray gel lube (wonderful stuff!) and the end play set real snug using a second bronze shim and another split collar.
An "o" ring as I use on all IH distributors was then installed for a gasket to seal the distributor body in place in the engine.
The delco distributor has an "oil cup" lubrication system for the top bushings, so that can be refreshed each time I use this. A few squirts of the gel lube into the bottom bushing spit hole will keep the shaft spinning freely.
This could be done using any butched IH-pattern distributor. In fact, I'm in the process of cutting down an aluminum Holley distributor also that will be used as an oil pump drive "plug" in my 196 engine build since it's gonna run a crank trigger ignition system with no distributor needed. But ya gotta have something in the hole to drive the oil pump from the cam!
Over the years I've fabbed several types of oil pump drives for shop use. Ihon currently has some very inexpensive tools I fabbed for those who don't wanna screw around with making one.
The tool described here allows me to install it in the engine being diagnosed and clamp in place using the oem distributor hold down. Then ya can start the drill motor and lock the trigger and let it run unattended while manually turning the crankshaft for cam bearing feed alignment.
It can also be used to for prelubing a fresh motor, or one that has been sitting awhile in order to pump up the lifters, oil the bearing surfaces, etc.
I haven't finished rigging up a "stop" to prevent the drill motor frame from rotating, that is next. I'm also looking for a 12vdc motor that I can adapt and mount permanently to the shaft for field use when needed. Minimum motor speed needed for doing this is about 1500rpm, 2500>2800rpm would be best.
I hated to trash a delco distributor, but this one has a shaft that is in really bad shape (lack of lube), and the portion of the mechanical advance unit that is oven-brazed to the top of the shaft was nearly rotted way. I did manage to salvage the drive gear for future projects.
So the distributor was gutted and then cleaned up and the damaged shaft area polished (along with the bushings). I cut down the length of the bushing at the top to allow more room for installing the split collar (1/2" id) and bronze shim. Then removed the butched advance drive (by grinding) so that the drill chuck could center up.
The unit was then re-assembled using some winzer products spray gel lube (wonderful stuff!) and the end play set real snug using a second bronze shim and another split collar.
An "o" ring as I use on all IH distributors was then installed for a gasket to seal the distributor body in place in the engine.
The delco distributor has an "oil cup" lubrication system for the top bushings, so that can be refreshed each time I use this. A few squirts of the gel lube into the bottom bushing spit hole will keep the shaft spinning freely.
This could be done using any butched IH-pattern distributor. In fact, I'm in the process of cutting down an aluminum Holley distributor also that will be used as an oil pump drive "plug" in my 196 engine build since it's gonna run a crank trigger ignition system with no distributor needed. But ya gotta have something in the hole to drive the oil pump from the cam!
