OIL PREASURE GOES FROM 50 psi TO 12 PSI?

[GP Black Pearl]

Installed new oil pump gasket. (Blew old one) My pressure was 70 psi on old gasket. Now with new gasket 50 psi cold and drops to 12 psi at 170* Has new AC Delco filter. THANK'S for your help as always. Pump has 32 miles on it.

Ed

 

[Sleeper-6]

Did you check the end clearance of the pump gears with the new gasket compared to the old one? If the new gasket is thicker creating a larger end gap it will kill your oil pressure.

 

[87GNSteve]

Did you check the end clearance of the pump gears with the new gasket compared to the old one? If the new gasket is thicker creating a larger end gap it will kill your oil pressure.

+1

 

[GP Black Pearl]

Thank's for the info. Where do you get the proper gasket.

Ed

 

[bsdlinux]

Did you check the end clearance of the pump gears with the new gasket compared to the old one? If the new gasket is thicker creating a larger end gap it will kill your oil pressure.

+ 2

 

[gsbuick65]

T/A performance sells a gasket kit with different thickness gaskets

 

[turbodave231]

Measure twice...............Assemble once!!!

DR

 

[turbofabricator]

Set oil pump thrust clearance between .0005" and .0015" The tighter the better. I have even lapped the face of the gears in place. I usually have to machine the timing cover flat, too. The cover face is not parallel to the gear face. (especially on the aftermarket timing covers. ) If the timing cover is still installed on the car, just use a thinner gasket. The TA set-up shims are worth the money. You can use plati-gauge to measure the thrust clearance if you don't have precision measuring tools. You want it tight, but not rubbing. It's not a five minute job to properly set-up a timing cover/oil pump. I have spent 4 hours just setting up an aftermarket timing cover. Those things are machined with an AXE!, and cast with a very poor mold.

 

[KWIKR 1]

Set oil pump thrust clearance between .0005" and .0015" The tighter the better. I have even lapped the face of the gears in place. I usually have to machine the timing cover flat, too. The cover face is not parallel to the gear face. (especially on the aftermarket timing covers. ) If the timing cover is still installed on the car, just use a thinner gasket. The TA set-up shims are worth the money. You can use plati-gauge to measure the thrust clearance if you don't have precision measuring tools. You want it tight, but not rubbing. It's not a five minute job to properly set-up a timing cover/oil pump. I have spent 4 hours just setting up an aftermarket timing cover. Those things are machined with an AXE!, and cast with a very poor mold.

yeah.... I was to lazy to do mine and got one done by you . Best oil pressure I've ever had out of a engine .

 

[Just a Six??]

Took me that long at least to port, clean passages, set the gears etc. but I have great pressure & it responds directly with the throttle! No climbing to this or that slowly, give it gas & it hits 60 everytime!! Well worth spending the time or having it done properly. Luckily we have Long Winters!!

I used the Earl Brown method & am Thankful he wrote that article!!