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I could use some help and information that would help in the restoration of my '32 901. I just sent the headlights out to be re-chromed. I've through all my boxes of parts, but can't seem to find any of the parts that are used to mount them to the headlight bar.

1. Does anyone out there have a picture or two of what they look like or
2. The part numbers for the fixture & bolt as I can't figure it out from the parts list manual available on this site or
3. Does anyone know if & where they might be available

Also, does anyone know what the output pressure a Bijur pump?

Any and all help would be greatly appreciated.

If you're referring to the vacuum powered automatic Bijur, the pump pressure is determined by the spring that drives the piston downward after manifold vacuum has withdrawn it. Never measured the pressure but expect it is quite low, probably not more than 10 or 15 psi. To function all it really has to overcome is the felt filter in the drip plugs plus whatever small frictional looses occur in the tubing enroute to the drip plugs.

It is one of the vacuum powered automatic Bijur. I would have thought it would be higher. I base this on the fact that the spring that pushed the piston, while it is not very strong, the piston's small diameter would serve as a multiplier, e.g. if the spring exerts 5 lbs of pressure and if the diameter of the piston was 0.1 sq. in. the pressure would be 50 psig.

However, I must disclose the fact that I'm a retired chemist and not one of those mechanical engineer types that could probably calculate the pressure given the spring's force, piston diameter, who knows what else.

You may well be right, next time I'm in the garage with a few minutes to spare I'll put a pressure gauge on it and we'll all know.

"....'32 901. I just sent the headlights out to be re-chromed. I've through all my boxes of parts, but can't seem to find any of the parts that are used to mount them to the headlight bar.

1. Does anyone out there have a picture or two of what they look like or
2. The part numbers for the fixture & bolt as I can't figure it out from the parts list manual available on this site or
3. Does anyone know if & where they might be available"

Regarding 3. you could try Don Axlerod of Headlight Headquarters, email is hdlthqtrs AT aol.com.

The Bijur unit has a spring with a force of 15 - 18 pounds (extended force to compressed force).

The spring force acts on a piston of 0.156" diameter. This piston has an area of 0.0191 square inches.

The calculated pressure available from the Bijur unit would be 785.34 to 942.408 psi.

15/.0191 and 18/.0191, force divided by area = pressure.

Some basic info on hydraulics:

science.howstuffworks.com/transport/engines-equipment/hydraulic1.htm

A set of re-done headlights:

ebay.com/itm/Packard-Headlights-/3512086 ... ssories&hash=item51c5ab6342&vxp=mtr

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Thanks for the all the information and the great photos on the headlight questions.

On the Bijur pressure question, I'm not sure that the question about the pressure is going to readily reveal itself. Being a retired aerospace chemist I learned at the bench that with a complex question with many variables may not have a single answer.

One can calculate the max pressure the system can generate with no leakage at the piston or elsewhere. But of course there are going to be a great number of leaks. In this case 35 points where you want to have leaks so you have a well lubricated car.

I posed the question because I'm going to install a small tank containing oil that I want to use for testing the system with and verify oil gets to those 35 points. I plan on using air to pressurize the tank and thought it would be nice to use a pressure that one would typically find in a functioning system.

My thought would be that if you pressurized to 15 lbs it would verify flow.

Ozstatman,

Thanks for the lead about Don Axlerod on the headlights. He had the bolts which I ordered and received yesterday.

I've not yet had the time to pressurize the Bijur system. I thought I would start at 15-20 psig and see what happens.

"Ozstatman, Thanks for the lead about Don Axlerod on the headlights. He had the bolts which I ordered and received yesterday"
Great, glad Don had what you needed!