Bosch Coil

In the car...

Out of the car before cleaning and painting:

Note: my hands would not be so dirty, those must be my Wife's...

The coil was painted with POR-15; I've been having issues with air bubbles in the paint as you can see... although the lighting in this photo makes them a little more noticeable than I think they will be in the car... (and I'm sticking to that). At any rate, it looks much better then it did, I could wet sand and spray it, but I do like the fact the POR is so durable; also, I can't spend my whole life working on one part... so, time to move on. The bracket was originally galvanized; I sanded it down to remove rust, applied Napa self-etching primer and then Rustoleum "Bright Coat" "Metallic Finish" "7714 Aluminum".  I'm trying to list all the paints used so that when/if things fail I will know what works and what doesn't. Testing with an Ohm meter showed that the primary and secondary coil were within in specifications so it should be OK.

The South end, with part number (0 221 102 0) 12V

Fuel Pressure Regulator

Before..

Here is the Bosch fuel pressure regulator in the car, it's held in place by a nut that attached to a bracket on the heater/blower box.

The Bosch fuel pressure regulator  (stamped 0 280 160 001,  below the part number are the numbers  123) was cleaned up using a wire brush on a Dremel tool, and lots of metal polish (Mothers). The bracket was cleaned up and painted with POR-15 gloss black (available here); more air bubbles remained in the paint that I would have liked, but I will wait to repaint it once I know how I will paint the heater box, to which the bracket attaches. The new regulators I've seen on the web look to be cadmium plated. Clearly I would have polished some of that off, but there was no evidence of it, even on the hose barbs that would have been covered.....? Testing of the pressure regulator will have to wait until more of the fuel system is up and running.

Manifold Pressure Sensor

Bosch Manifold Pressure Sensor






















After cleaning

I cleaned it up using a brass brush on a Dremel tool followed by Mothers Mag Polish. The base was cleaned up and painted with black POR-15. It could use more polishing, but at this point I'm not sure if it works, more on that below..

I assume this is the original part.... but, it does have a VW logo and part number (311 906 051 B), in-addition to the Bosch part number (0 280 100 001). I tested it to see if it would hold a vacuum, it did, but only for about 30 seconds. I'm still reading up on how the part works, but it does seem that there is supposed to be a epoxy plug on the adjustment screw (not sure if this is to seal the unit or just keep the adjustment screw in place). Some epoxy (amber colored, lower right in photo above) seems to remain at the base of the screw housing, also the screw was covered with a blob of black putty which I'm sure was not air tight... not sure if that was original. So more testing and reading is needed on this part...

Edit: Got an email from Brad Anders who points out that "The 001 MPS is for the Type 3 VW's (e.g. Squarebacks)" Other responses suggest that this part was likely replaced and would not have appeared on a P1800. Thanks for all the responses! I guess this is one more thing to deal with when the car gets closer to being done, which is still a fews years off....

Coolant overflow bottle bracket (take 2)

This is the bracket that hold the bottle for the coolant overflow in the car.

I think the part was galvanized.... so I thought I would try Rustoleum's "Cold Galvanizing Compound". Well it looked really good!

Until you touched it, OK dragged a fingernail across it, the "paint" does not stick even after the metal had been etched! Well some web searches turned up that this is what it does, its not really a paint, but a "compound".... Not sure what it's good for, but it's not good for car parts.... So, the part sat around for a long time because it was depressing to look at it and think of all the wasted time. Finally after the old "paint" was  taken off using lots of paint stripper and a metal brush, I coated it with NAPA self-etching primer and Rustoleum Bright Coat "Metallic Finish" "7715 Aluminum". Looks good and should be more durable.