Oil Pressure Adjustment? Relief Valve?

[famvburg]

If I wanted to increase the oil pressure on my '69 with the 170 straight 6, is there a relief valve that's easily accessable? I've had a few vehicles that had them on the outside of the engines & airplane engines are on the outside of the engine, but I know on a Mack truck it's on the oil pump itself & you have to drop the pan to get to it. Any help out there? Thanks.

 

[Bully Bob]

Hi Fam...,

NOT that I'm aware of....however...

What precipitated this need...?

1st., is your gage reading low....? ----They're not all that accurate.

Might be better served doing a press. test at the block.

2nd., more volume is a good thing., not more press.

3rd., if the eng. isn't holding press., pumping it up is just delaying the inevitable.

4th., my orig. dash gage reads a bit low.., but my back-up mech. gage reads normal.

 

[famvburg]

It's more of a 'want' than a 'need'. My gauge usually reads in the 20 - 25 PSI range, but sometimes reads as high as 40 PSI. It's usually steady at whatever number it does settle on. My late dad overhauled it about 10 - 12 years ago & my guess is it's got less than 10000 miles on it since, so I'm really not worried. Maybe closer to 5000. It runs good & doesn't make any weird clattering or knocking noise so I'm sure it's really OK. I read where the high normal PSI is 55 & we jack up the pressure on airplane engines all the time. I haven't checked it with another gauge yet. I know how to do that, but I couldn't figure out how or if the pressure could be jacked up. I guess I'll just check it with another gauge (mechanical) & see what it does. Thanks.

Hi Fam...,

NOT that I'm aware of....however...

What precipitated this need...?

1st., is your gage reading low....? ----They're not all that accurate.

Might be better served doing a press. test at the block.

2nd., more volume is a good thing., not more press.

3rd., if the eng. isn't holding press., pumping it up is just delaying the inevitable.

4th., my orig. dash gage reads a bit low.., but my back-up mech. gage reads normal.

 

[Bully Bob]

Oil pres. for a 170 I-6 is 45 psi @ 2000 RPM

Pressurizing beyond factory specs. can have a neg. affect with most engines.