loss of oil pressure

[Steves Buick]

Hi guys,

I just drove my 1932 96s for the first time since resto, runs great but at 55 mph the oild pressure dropped from 30 to 5 psi, no evidence of leaks, no knocking, now if I start it I have just 5 psi, any ideas before I drop the pan and check the screen? 

Thanks in advance.

Steve

[avgwarhawk]

Can you confirm the oil pressure gauge is  reading correctly?  

[Steves Buick]

Thanks for the reply,  yep I have a back up oil pressure gauge , although it T's into the original down at the block( same source)..it has been working fine, both did show 30 psi when running, now both dropped off to 4-5psi.   

[avgwarhawk]

Rules that out.     Oil pick up/screen in the pan perhaps is loose or off?    

[Steves Buick]

Thats what I was thinking.. I'm off to pull the pan, will keep posting..Thanks.

[Steves Buick]

Found the problem, 

A broken mailn pressure line, work hardened from the cotter pin on the piston rod retaining bolt hitting and taking a bite out of the line.

Pressure Reg OK as was the screen, a bit gunky pan but thats it..

 

Any suggestions on a repair would be most appreciated..

Thanks,

Steve 

[avgwarhawk]

On my. That is revolting.  I would think this item could be made with similar brass tube and T's.  Or use steel lines an T's from the auto parts store.   Need a tube bending kit.  May be able to get the loaner kit from the parts store.   

[raydurr]

I am almost positive that the broken pipe is soldered into the T. The flared part should be easy to duplicate as long as it is a standard size. Duplicate it and have  the most qualified  radiator or plumbing solder guy, solder it back together. Be prepared to re solder the other connections of the T as well. Cleaning and getting it oil free will be the largest task.