So here is my tale of Heatache,

Over the winter I removed my 272 and sent it over to a local machine shop who claimed to have experience in the imfamous Y, 3 months later I get back my engine (40 over, isky e4, and just about everything new, to the tune 0f 3500.00), I install the engine (with the tri power from ebay only to learn the manifold was cracked, then went back to the stock 2bbl), new clutch, pressure plate, bearing, and machined flywheel.

I start it up , ready to run for 20 mintues at 2,000 rpm as isky suggests with the zinc additive, only to find I have no oil pressure. I call the rebuilder and he says " It must have lost prime" , so i pack the oil pump with vasoline ( got some strange looks buying the family size jar) and i run it with a drill, I get 50lbs of oil pressure. Elated, i reinstall the dist set everything up , start it and vroom, sound great but the oil pressure started at 16lbs and dropped to zero, i shut it right down.

i figure maybe he didn't change the intermidiate rod and maybe it wasn't going into the dist far enough, but that was not the case, I reprime the pump and try again, still no oil pressure.

Any words of wisdom that may save the rebuilders nose from getting broken?

Helpppppppp,

Mike

 I'm on a Lowwwww Budget

When you ran it with the drill(prelube) did you get oil up to the head?Are you using a known good pressure gauge?

  

Yes it went to both heads and I can actually see the oil come up the tube for the gauge when there is pressure, the gauge is new and working.

 I'm on a Lowwwww Budget

Mike, any chance the rubber oil pump seal to external pickup tube is not sealing correctly allowing pump to suck air?  just a thought.

  AussieBill            YYYY    Forever Y Block     YYYY

 Down Under, Australia

There is no leaks what-so-ever, that was something I thought of and disproved. But thanks, all ideas are welcomed.

 I'm on a Lowwwww Budget

Bills suggestion sounds like a good place to start.If you get flow up to the top then the pump is obviously working.Is the drive shaft installed correctly.We had quite a discussion about the ARP one I bought that had the wrong size washer installed on the wrong end of the shaft.Washer should be on the bottom end so it cant be pulled out of the pump.I would recheck that seal on the oil pump pickup tube first.Sounds like it is sucking air and looses prime.

  

Is the distributor correct?


Lawrenceville, GA

yes checked fit at dist and at oil pump

 I'm on a Lowwwww Budget

Since you can prime it and get 50 psi, but no pressure when the distributor is turning the pump, I'd take a good look at the hex inside the distributor shaft.  Also, if a new drive rod was installed, maybe it's the wrong one and too short.

John - "The Hoosier Hurricane"

Don't forget we discussed a while back about how some new oil pumps are too deep on the drive hole and even the correct drive shaft will slip down in and not contact the dizzy,  Take a look at that.

   God Bless.   Tim                           http://yblockguy.com/

350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor

tim@yblockguy.com  Visalia, California    Just west of the Sequoias