Re: wanted: old L 6 oil filter for 34 1101

Posted by Tim Cole On 2014/1/17 18:40:01

The only way the cooler can cause a drop in oil pressure is if the flow rate through it is less than pump capacity.

An engine requires about six gallons per minute of flow, and 10 psi per 1000 rpm. The Packard specification of 45-50 at 35 mph is already above what is required.

The pressure shown on the gauge is down stream pressure and is lower than mainline pressure.

Now there is a limit to safe oil pressure on those Packards. Too much oil pressure saps horsepower and can, and has in some cases, blow a hole in the crankcase oil passages. It also places an undue burden on the timing gears, oil pump and cam shaft gears.

Packard was doing a lot of research into flow regulation thanks to the proving grounds.

Now as to how many miles are being driven by rebuilt motors, when those cars were new they were racking up some impressive mileages. In 1930 they were rolling up 6,000 miles in six months on some of those cars.

I have always felt the reason today's rebuilts don't go the 100,000 miles that the original motors did is because the crankshafts wear out. They bend, they fatigue, and they whip. Not to mention old eroded cast iron blocks, carburetors, and manifolds.

The old timers drove the cars conservatively. Today's crowd wants to run them on the expressway where they blow up. Maybe they need a new car.