Hey,
Is anyone familiar with the big ventilation box that controls the air flow and heating in series 2 cars? basically, i want to remove the necessity for vacuum control in my series 1, seems too complex to use vacuum to open some flaps.

I have a series 1, the manual indicates that is uses a series of vacuum tubes to control the volume, direction and the temperature of air.

The manual goes on to say that series 2 cars have vacuum AND mechanical linkages.

Can anyone confirm whether series 2 cars will operate completely WITHOUT vacuum?
if so i might hunt down a series 2 ventilation system and swap it in.

Also, I have a rust problem in the air intake vent, can i get to that from inside the car behind the ventilation box?

 

A Series II will have the Delanair MkII Climate Control. This system relies heavily on vacuum operation. The defroster flaps, central a/c outlet flap, recirculation flaps, and heater valve are all vacuum operated.

I can't see any practical way to operated such a system without vacuum actuators

Cheers
DD

 

I think the Series 1 climate system is closer to the system of the Jaguar MK-X, 420-G, S type of 1963-1968, and the Jaguar 420 of 1966-1968, which are also vacuum-dependent and only a few details are mechanical. But even those models are also dependent on vacuum.

there is little documentation for the 420 system being that it was only made for 2 years, but it is very similar to the system in the S type of the same period.

you might ask George Camp in the MK-2 / S type forum since he is more familiar with those systems.

 

I have attached a .jpg of the heater controls that use vacuum. I have eliminated #4, #5 and #3 so far.. #1 has been changed to a brass type control that still uses vacuum, it can be changed to one that is driven by a motor. The vacuum is only a problem due to the plastic nipples that Jag used - they can be repaired with brass tubing.. plus the need for very soft tubing of the correct sizes.

These are all located behind the radio except for #5 which is behind the engine.. I just installed one of these electronic water valves on a Jaguar 6 engine and it fits with the use of a 90 degree 5/8" water hose.

Improving the heating/AC on the S1 can be done easily enough, but installing the later system is not the answer and it would take a new console and dash redo to have the needed room.

The other pieces are the source valve and vacuum reservoir located on the firewall.

Having had a SII, I sure would not want to go that direction as the complexity is GREAT and you "gain" climate control which means the car cycles the AC/Heat to give you the desired temp... a early Jaguar attempt at creature comfort..the Series 1 system modernized is as good and easy to keep working and much cheaper.