I have watched both videos from Jungle Explorers who simply reroute existing parts
The video from Vantageoptics describing the kit supplies a kit with a new reservoir.
https://youtu.be/8vlTidauI1c
First, my guess is that the reservoir helps when you have a low vacuum situation for example you have the engine floored and do not want to switch temp controls to the defrost mode as a result. So while the controls work without a reservoir at idle (i.e. max vacuum) as shown in the video, you could have a relatively immediate loss of temp control without the reservoir, With the reservoir, you will have a certain amount of time before the reservoir vacuum is expended.
However, unless I am mistaken, I do not see how the vacuum check valve/ "T" is remaining in the system with the Vantage Optics kit. Am I correct here?
The first video basically pulls the check valve and long value line out from the OE reservoir. This is the part where he says you have to finagle it out. This long line is then repurposed by putting the check valve inside the cab rather than inside the fender as originally.
In comparison, the Vantageoptics kit seems to completely abandon the check valve down by the OE reservoir including the length of the vacuum line that the first video repurposed (albeit it running in reverse).
On further analysis comparing
#1.) single port OE style vacuum source and the
#2.) two port accumulator style reservoir configuration (see the attached figure)
the two ports will take some time to pull down a value in the accumulator reservoir, whereas the OE will be relatively immediate even without the check valve.
The check valve in the OE configuration however maintains a vacuum in the reservoir when the engine is shut off. A similar repurpose of the check valve for the two-port accumulator is also possible giving a similar behavior as the OE.
It would seem that the best solution is to remove the OE vacuum "T" from the OE reservoir and reuse the OE hard vacuum line (as in the first video), but include a new reservoir under the dash. Whether you use an OE-style single port or a cheaper 2 port as in the Vantageoptics kit is probably irrelevant using the check valve.
It is probably better to minimize the rubber vacuum line under the hood for that purpose I would recommend (at least that is what I'm inclined to do) reusing the OE vacuum line attached to the OE check valve under the dash.
The various parts to choose from are listed below and all are available on amazon.
- Ford D7OZ-19A563-A - Valve - AIR CONDITIO
- Dorman 47995 Econoline OE (inner fender) replacement Reservoir.
- Dorman 47076 Vacuum Storage Canister Compatible with Select Models (apparently same as the VanatageOptics)
I have used this in the past and much prefer it to electrical tape (which gets gummy) when having to splice into a harness where you cant get shrink tubing over without cutting through the wire.
- 3M Temflex Rubber Splicing Tape 2155, 3/4 in x 22 ft, Black, General Purpose Self-Fusing Electrical Insulating Tape, 1 Roll