Walt Dupont lectures on V8 Oiling

Overall good information. I saw only one technical problem----the oil cavity around the pushrod bushing that was discussed in video #1 does not exist in the block that was being used for the demo. That cavity is only present in the earlier engines with the small pushrod and bushing. The demo block(8BA style) has the oil passage drilled directly to an intersect point and not into a cavity.

The vidoes should help educate interested people on how components receive lubrication in our Flatheads and should reduce questons about lost oil pressure when the pushrod is removed.
 
Well I sure understand now where the oil goes when it leaves the pump. Walt is a great teacher, and gentleman. He talks a little funny though, like a lot of folks we met in Maine.
Thanks Walt

John
 
Thanks, Walt. Could you answer 4 questions (5 including this one)?
* How is the oil pump idler shaft held in the block?
* What determines the end play of the idler gear on the idler shaft.
* The idler gear cover is just a cover, isn't it (by this i mean the idler gear shaft doesn't touch it and is not held in by it?
* Is it necessary to replace the idler gear bushing or do they last forever?
Thanks, Jack Orchard
 
Last edited:
JWL said:
Overall good information. I saw only one technical problem----the oil cavity around the pushrod bushing that was discussed in video #1 does not exist in the block that was being used for the demo. That cavity is only present in the earlier engines with the small pushrod and bushing. The demo block(8BA style) has the oil passage drilled directly to an intersect point and not into a cavity.

The vidoes should help educate interested people on how components receive lubrication in our Flatheads and should reduce questons about lost oil pressure when the pushrod is removed.
Click to expand...
Hey JWL. your right about the 8BA oil cavity, I guess I had 59 block in my mind. But I guess most of the guys got drift the.
 
jack orchard said:
Thanks, Walt. Could you answer 4 questions (5 including this one)?
* How is the oil pump idler shaft held in the block?
* What determines the end play of the idler gear on the idler shaft.
* The idler gear cover is just a cover, isn't it (by this i mean the idler gear shaft doesn't touch it and is not held in by it?
* Is it necessary to replace the idler gear bushing or do they last forever?
Thanks, Jack Orchard
Click to expand...
The oil pump idler shaft is just a press pit in the block, the gear end play is determined by how far you drive in the shaft. Just drive it in so you have .003-.004 end play, the cover is just a cover, the gears don't touch it, i've only replaced the idler gear bushing a couple of time in my life, there hardly ever worn out. John, I thought you guys talked funney,LOL Walt
 
That's insider information you couldn't buy for any amount of money. Thanks Walt for explaining the oiling system. And thanks to VeryTangled for posting it.
 
Nice work Walt. Sure was simple when you explained where the oil came and went from. Thank you & the cameraman.
 
Good stuff...
If we could only get Walt, Ol' Ron and a few of the other Fordbarn experts together for a flathead panel discussion. On video, of course.
 
Great explination of flathead oiling-some say it is a bad design-I think this shows why the bow tie copied it for the small block.
 
Great information Walt. I agree with Hal Beaty. A video would be a nice seller I would think. I would sure buy one. Lawson
 
The elongated slot in the oil pump... I just removed an oil pump that had a round hole, instead. Were some of them round, or might this one be originally from a French motor? The head of the hold down bolt is metric measurement. As are the heads of the oil pan bolts.
 
Walt, excellent video and understanding of the oil distribution throughout the Flathead.
My question is in the first video you showed the oil pump and where the screen picks up the oil via the pump takes it in and carries through that slot in the oil pump into the chamber where the oil pressure sender unit would be on the top side of the block. My question is when you put the screw driver through the rear main hole of the block where the crank shaft journal would be lubricated, you stated that the oil would travel from that oil sender chamber? I was trying to keep track of the slot that the oil comes out of the pump and into that chamber when you stuck the oil pump in the block and ligned it up with the bolt hole so the pump would stay in place, and it appears that the slot in the oil pump that delivers oil is facing opposite of the hole in the block for the crank journal galley hole. I was expecting to hear that the slot when pump in place would have faced the opposite direction toward the galley hole in the block for the crank rear main lubrication, so now I guess what happens is that so much oil is picked up and shoved through that slot and that the oil pressure chamber fills up enough to where the oil travels through the block hole to lubricate the crank journal. I hope that made sensen, I do get a bit wordy.

It just seems like it would have made more sense for that slot to have faced in the opposite direction than it is when bolted into place and shoving oil directly at that hole in the block for the crank, facing the way it does it seems like it comes through that slot and just splashes off the block wall in that chamber and fills up with oil and then streams into that tiny hole. Thanks again for my on going education....
 
Well, Verytangled's video sure turned out to be informative to many. Maybe we can talk Walt into doing some others at some point later. What topics would you be interested in?

* grinding valve stems to set valve lifter clearances

* Fitting floating bearings to the crank journals

* Cleaning crank oil passages

* Removing old, stuck valve guides

Etc., etc.

John
 
Great talk Walt, you sure don't sound like someone from around here. I would add one thing I always check. On the 38-48 blocks there are oil passages that go to the water pump bearings. I have always cleaned them out.
 
You must log in or register to reply here.
Back
Top