MPS, Rebuilding the MPS Options

[Ron914]

Hello to all who have helped me with this project . @emerygt350 ,@TJB/914, @Superhawk996 , @ChrisFoley , @rjames , @MDTerp
I am in the middle of rebuilding my MPS and have a couple of comments and questions .
First when I opened up the unit I found the most difficult job was removing the rivets holding the two halves together.
When I removed the retainer plate to take out the old diaphragm it was in two pieces .

I needed to take two measurements since I was replacing the stop screw , I needed to measure the the stop screw protrusion into the housing . The instruction sheet sent to me by a member had the measurements he must have made when rebuilding his MPS . His stop screw protrusion was 1.97mm and mine only measured 1.72mm.
His inner/outer screw assembly depth in the old diaphragm measured 6.51mm .
Here's one of my questions ?
when I measured mine I got two measurements depth to inner/outer screw assembly was 4.03
and depth to the washer outside the inner/outer screw assembly was 5.46mm.
Again there is a difference and since mine was never accessed before (epoxy over screw was not disturbed) is the difference in measurements ok and which measurement should I use I will try to attach a photo or two to help with my question.
this one .

I have not touched either of these measurements yet and awaiting any help/comments.
I think it's this one to the washer on diaphragm .

[fiacra]

Ron got that Pertronix from me, and yes it is older. It sat in a box on my shelf for at least 10 years.... If it is a worry for you Ron I'm happy to refund your money and you can simply trash the Pertronix.

I went down the rabbit hole and I think you are correct about the 123 and the smog check. Of course everything depends upon who is doing the inspection. I believe the 123 would fall under the category of performance distributors, and these would require that the company submit it to the CARB for certification that it does not make the car run dirtier than the OE distributor. An exemption would then be issued. I couldn't find any documentation of this having been done.

[Ron914]

Ron got that Pertronix from me, and yes it is older. It sat in a box on my shelf for at least 10 years.... If it is a worry for you Ron I'm happy to refund your money and you can simply trash the Pertronix.

I went down the rabbit hole and I think you are correct about the 123 and the smog check. Of course everything depends upon who is doing the inspection. I believe the 123 would fall under the category of performance distributors, and these would require that the company submit it to the CARB for certification that it does not make the car run dirtier than the OE distributor. An exemption would then be issued. I couldn't find any documentation of this having been done.

It's not a problem fiacra ,
I don't want any money back . Everything with this car is a learning experience for me . I will just be extra diligent when outside of the car tuning it . If I was to eventually pass a smog test I could then install the 123 but would have to remove it every two years or find a guy as everyone tells me that looks the other way . Hopefully Jay Leno's law passes and I won't have to worry about the smog check any more . I know there is a lot of controversy about that law . I could also buy a newer version of the Pertronix if I wanted to but I would rather put that money into a 123 but first order is to get my car sorted out and pass the smog test .I want to drive my car to my first WCR in June .

[fiacra]

If I was to eventually pass a smog test I could then install the 123 but would have to remove it every two years or find a guy as everyone tells me that looks the other way .

I wouldn't advise you do that. Unfortunately those people are out there, and I'm sure you could find a shop that would do it, but I'd like to think you are a more ethical person than that. I know you can do this the right way.

The "large rectangular box" on the relay board is the voltage regulator. Here's a link to a picture of the relay board with the relays labeled.

http://www.914world.com/specs/SirAndyCarbFuelPumpRelay.php

And here's a link to a video explaining the relay board.

https://www.youtube.com/watch?v=YLgQxpNHzIU

A remote starter switch is cheap, easy to get, easy to use, and invaluable when adjusting the valves.