Welcome Konstantine! Wow- that's a lot of work, but looking good. I've heard of updraft carbs, but have never seen one. I'm just starting to work on my vacuum wipers. That secondary pump seems like a good choice. Can't wait for your next update.
Hey there, and thanks for the warm welcome. It's much appreciated!
Yeah, I've done a ton, and have a tone more to do. I'm glad to have found a good forum to share my escapades and progress on.
I'll attach a pic of the updraft, as well as the two stage pump, the splitter I have, and how I mounted it with the one way valves.
Thankfully, parts for the carb (Carter BB1) are available.
The dual stage pump is mounted with fuel up top, and vacuum below. The vacuum pump has an IN and an OUT port.
The splitter has 4 ports. One is labelled MAN (Manifold). I have a vacuum hose going from the manifold to the splitter, with a one way valve spliced in near the splitter with the arrow/flow of the valve facing the manifold.
The second large port is labelled V. P. (Vacuum pump). I have a hose coming out of the VP port of the splitter, installed a one way valve with the arrow/flow facing the vacuum pump, and the other end of the hose going to the OUT port of the vacuum pump.
Then a hose going from the IN of the vacuum pump going up to the outlet on the splitter that goes to the wiper "motors". I used a Tee there. I attached the other end of the hose coming from the IN of the pump to one end of the Tee, the second end of the Tee is attached to the port coming off of the splitter that goes to the wiper motors, and the third end of the Tee has a hose going up to the wiper motors. In the cab I used a Wye fitting to branch off to the tow motors.
I hope that all made sense and possibly helps!
There was next to ZERO information online about the splitter. It took me a while to figure out the orientation of everything, or that the splitter was supposed to work as the one way valves on its own! Now, my wipers work at idle and when I'm on the gas!
I do have to remove and rebuild the passenger side wiper motor, as it's not functioning properly. That should be interesting...
