Where is the oil pressure sender on a wasserboxer

Hank Winning · Post by **Hank Winning** » Fri May 14, 2004 7:53 am

Howdy Gang,
Could some one tell me where the oil pressure sender on a wasserboxer is? We will be getting our Bentley Manual for it soon but would like to get a oil pressure gauge and need to know the tread size.
On our other VWs we have used a 1/8" npt flex grease gun hose into the block. Is the treads the same size on the wasserboxer?
thanks
hank

Badbugtwo · Post by **Badbugtwo** » Fri May 14, 2004 2:27 pm

The stock threads are straight. You could probably use the hose for test purposes. The stock oil pressure sender (for a light) is located in between the #3 & #4 intake pushrod tubes.

Here's a pic:
(Sorry for the poor quality of the first two pics

)

http://www.badbug.com/images/19wb3.jpg

These are shots of where I located my pressure guage sending unit:

http://www.badbug.com/2004_engine.htm

http://www.badbug.com/images/sump2.jpg

Hope this helps!

Hank Winning · Post by **Hank Winning** » Fri May 14, 2004 8:00 pm

Thanks Jeff
The first photo was a big help

hank

Post by **Piledriver** » Tue Jun 01, 2004 5:47 pm

On an 88 Vanagon (at least) you have 2, a high pressure unit above the pump, and a low pressure unit on the lifter galley, same as a bug.

IIRC, the high pressure one is on the mains, at the output of the pump where badbugtwo has his sender in the pics. The std issue bug one is on the side, between the pushrods.

The low pressure unit is normally closed. The high pressure unit is normally OPEN, and BOTH must be logically OK or your oil pressure light/buzzer will freak. (dynamic oil pressure)

Hank Winning · Post by **Hank Winning** » Wed Jun 16, 2004 4:46 pm

Howdy,
We just got our Bentley manual for the syncro and see that they show two oil pressure senders as pile drive said.
I haven't removed the #3 and 4 tin to look at the oil pressure in there
and was wondering which sender to tee off for a oil pressure gauge
any body using a oil pressure gauge on their Vanagon wasserboxer out there?
thanks
hank

Post by **Piledriver** » Wed Jun 16, 2004 9:56 pm

The one on the side is the easiest to get at, the one on the case end is close to belts etc.

Just copy BadBugTwos example.

They should read the same pressure, it's hydraulics, and I don't THINK there is a restrictor.

davemenche · Post by **davemenche** » Sat Jun 19, 2004 11:45 pm

I have been told, by a major Vanagon rebuilder that the upper oil oil port near the pump will; give ahigher pressure reading, as it is right off the pump oultet. the lower port, near the pushrods is closer to the "end" of the oil circut", and hence will have a lower pressure. I installed mine on the port at the pushrods, and was concerned at 28 psi pressure at freeway speeds using 15W-50 oil. i was told not too worry, that the pressure was likely much higher at the other port. As pointed out by others, the other port is in a tight spot on a stock vanagon.

Can someone on this list please confirm the above, that is that the push rod area port is expected to have a lower pressure. i do not have an oil circulation diagram for the Vanagon motor, hence would like confermation.

dave

1986 Vanagon, with 171k miles on original case (heads replaced under factory warrenty when about 30k miles many years ago, otherwise all original)