I'm getting my truck ready for WVO and figured this info may be good for others. Took the fuel in and out fittings off my spare Stanadyne IP just to check it out so I took pictures to help out others!
There is a stainless steel wire mesh filter built in on the input side. Check it out here http://asnowsquall.smugmug.com/gallery/307774/3/26601040
Dave
http://asnowsquall.smugmug.com/photos/26601040-O.jpg

underneth that fitting is the 5/32" allen that controls transfer pressure. I've heard that with increased lift pump pressure and a 1/2 turn of the tp screw will help the IP's fueldelivery.

Just raises transfer pressure, and 'could' compensate for transfer pump pressure lost from wear and improve advance function, doens't do anything to fuel quantity unless it was really low to begin with.

Also, there is a tiny wire mesh screen at the bottom of the regulator, feel free to discard.

The adjusting screw that QM mentioned also contains a viscosity compensating orfice plate, to maintain more consistent pressure with varying fuel viscosity due to temperature changes mostly.

You can see the ball in the return fitting is definitely not a check valve, as there is a large gap on one side. Its only role is to regulate housing pressure to about 8-16 psi.

Raising the fuel pressure will increase fuel output slightly but may not be noticeable. Advance function will not be altered any way whats-so-ever.
The computer constantly monitors advance and any change in pressure up or down will be corrected by the computer in the advance movement directed by it. The computer has total control over the advance no matter what.

Neat pictures. We need a file of pictures for references.

Your claiming a less than noticeable (even on a test stand) increase in fuel delivery, and that raised transfer pressure will not affect advance movement?

Thats like saying your tractor won't move the hydraulics faster if you rev it up. Its a hydraulically operated, stepper controlled advance piston, more pressure quicker reaction.

The main claim Stanadyne has on the DS pump is the ability to control timing. The moment the optic sensor sees movement the computer will correct instantly and I mean Instantly. Ever wonder why the stepper motor is constantly moving up and down? That's to correct for timing. Change pressure > stepper motor takes over and corrects.

OK Guys Keep this one ON TOPIC or I'll close it

Thank you, BowTie!

nice pictures huh?

Excellant pictures! There is another valve inside the connector on the outlet.

very nice indeed.

very nice indeed but you gotta love the pump discourse.

If it stayed friendly and informative then it could contiune but that appeared that it wouldn't be happening so I took some action to keep it on topic.

I cleaned mine up some. Sorry for the inconvenience.

Thanks Diesel Pro,

I really hated to have to step in BUT if I ( a 6.5er myself) Didn't the other power to be would. Diesel Power has ask us to keep threads close to topic and at least somewhat friendly, no personal jabs etc...