Hi to everybody
I am look for a step-by-step disassembly of the Jaguar MK2 Heating System with utmost care.
Does anyone happen to have detailed documentation or a manual for the disassembly of the Jaguar MK2 heating system ?
Jaguar Service manual is not very explicit about this topic.
My best regards
Gérard

 

https://landieman.com/2020/02/19/hea...n-and-upgrade/

Above might help.

It's a fairly simple system, though the linkages require careful adjustment.

The alternative to repairing it is to replace it with a kit car heater.

 

Back in the day, at the New York motorshow, a Jaguar owner once confronted Sir William Lyons about the very poor heating of his car. Sir William is reputed to have said, "when it's cold you must put on an overcoat" !
UK motoring magazine journalists used to complain in an indirect way of the Mark 2 heater lack of heat - "a greater heat supply might be expected; it was just sufficient on the test car for comfort".
Rumour has it that a Jaguar engineer accompanied a group of journalists on a test drive to demonstrate the heater worked OK. At the end, one of the journalists sitting in the rear seats showed the engineer a snowball that he had placed in the car before setting off !

So useless heaters were a long-standing feature of Jaguars for many years.

 

... and when you find a parking space, stop the car next to it, get out and take off your overcoat in preparation for the exercise of manoeuvring your non-PAS Mk2 into the space. I feel privileged to have lived in times when cars were so much fun and life was so relaxed.

 

Hello everyone

How to make the heating system of a Jaguar MK2 truly effective, along with the key modifications to consider ?
With so many years of observations and experience, I imagine there are solutions that do not require altering the original exterior appearance
My best regards
Gérard

 

Peter
I understand these nostalgic sentiments, and I share them as well.
But ..
Let's get back to the technical side!
The upgrade kit offered by Clayton is an interesting solution, but they claim a maximum improvement of 25% in fan efficiency : it's not enough !
If we had to redesign the heating system in the same space constraints, what would be possible solutions.
Let’s put ourselves in the shoes of a Jaguar engineer.
Another alternative : leverage on system heating from more recent cars ? Possible ?
My best regards
Gérard

 

The same heater box in my 1965 S type produces enough heat in winter, the only difference between S type and MK-2 heater is the Heater Valve / Tap.

If system is filled with water instead of coolant, that makes a difference too.

 

https://www.ebay.co.uk/itm/187073356...QaAqRaEALw_wcB

I think you mentioned that you don't want the appearance of the heating system to change? With that as a given, it's difficult to imagine great increases in heat output. Thinking outside the box, would you consider heating the seats? My XK has heated seats and they are effective on cold days.

 

I put a new core in my car and kept the same fan.
I sealed up all the holes in the heater box and replaced all the foam, and even added in areas to make sure the flaps seal as best they can.
Once this was done, it kept the car warm enough to drive around it late fall at just below freezing.

 

Things you need for a good heater:
Hot coolant-180F minimum, 3 gal/min of coolant flow, a minimum of a 150 CFM of air flow, 200 CFM is better, doors/flaps that seal and direct all the air evenly through the heater core and a modern heater core.

I hope this helps