[xj] AC and heat working well in Series 1 XJ6

Today was the final road test after adding an center dash vent to
the cars AC system, an electronic controlled heater valve, modern
cross flow AC condenser and a Sanden AC compressor, plus ‘‘plugging’’
up the flow through ventilation system. The system is charged with
modern R134 now.

It is in the HIGH 80’s F here in So Cal and I was able to get the
car cooled with vent temps in the high 40’s F very quickly (about
two miles of city driving) and then maintain the temps on the Low
fan speed.

These cars do not have an efficiently designed evaporator but can
be made to cool well without removing the original Jaguar
equipment. I just used modern replacement pieces where it made
sense.

I had a lot of help from the Jag Forum and especially from Robert
Wilkinson who had the idea for the new center vent and a new cable
control for the defrost vents.–
'71 XJ6 383/200R, '74 XJ6 383/700R, '74 Nova SS Glendora, CA
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–

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I have a non AC S1 and was thinking about installing one. Could You
post a complete description on what parts to use and how You did it.

Best regards
Mikkel

Den 25/08/2007 kl. 23.41 skrev Roger Mabry:> Today was the final road test after adding an center dash vent to

the cars AC system, an electronic controlled heater valve, modern
cross flow AC condenser and a Sanden AC compressor, plus ‘‘plugging’’
up the flow through ventilation system. The system is charged with
modern R134 now.

It is in the HIGH 80’s F here in So Cal and I was able to get the
car cooled with vent temps in the high 40’s F very quickly (about
two miles of city driving) and then maintain the temps on the Low
fan speed.

These cars do not have an efficiently designed evaporator but can
be made to cool well without removing the original Jaguar
equipment. I just used modern replacement pieces where it made
sense.

I had a lot of help from the Jag Forum and especially from Robert
Wilkinson who had the idea for the new center vent and a new cable
control for the defrost vents.

'71 XJ6 383/200R, '74 XJ6 383/700R, '74 Nova SS Glendora, CA
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–

===================================================
The archives and FAQ will answer many queries on the XJ series…
FAQs: http://www.jag-lovers.org/xjlovers/xjfaq/index.html
Archives: http://www.jag-lovers.org/lists/search.html

To remove yourself from this list, go to http://www.jag-lovers.org/
cgi-bin/majordomo.

// please trim quoted text to context only

===================================================
The archives and FAQ will answer many queries on the XJ series…
FAQs: http://www.jag-lovers.org/xjlovers/xjfaq/index.html
Archives: http://www.jag-lovers.org/lists/search.html

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In reply to a message from Roger Mabry sent Sat 25 Aug 2007:

Roger,

Can you please send me whatever you have that will instruct
me as to what I should replace to modernize my AC system
too. I have a 1986 XJ6 VDP.

Thanks.

Today was the final road test after adding an center dash
vent to
the cars AC system, an electronic controlled heater valve,
modern
cross flow AC condenser and a Sanden AC compressor, plus
‘‘plugging’’
up the flow through ventilation system. The system is
charged with
modern R134 now.

It is in the HIGH 80’s F here in So Cal and I was able to
get the
car cooled with vent temps in the high 40’s F very quickly
(about
two miles of city driving) and then maintain the temps on
the Low
fan speed.

These cars do not have an efficiently designed evaporator
but can
be made to cool well without removing the original Jaguar
equipment. I just used modern replacement pieces where it made
sense.

I had a lot of help from the Jag Forum and especially from
Robert
Wilkinson who had the idea for the new center vent and a new
cable
control for the defrost vents.–
'71 XJ6 383/200R, '74 XJ6 383/700R, '74 Nova SS Glendora, CA

Jack Peters
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php

===================================================
The archives and FAQ will answer many queries on the XJ series…
FAQs: http://www.jag-lovers.org/xjlovers/xjfaq/index.html
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In reply to a message from Roger Mabry sent Sat 25 Aug 2007:

Well done! Lots of thought and work!

I too would like a description of the work. I removed all the AC
stuff after trying in vain to get it to work satisfactorily. These
are hot cars though, and it’s one feature I’d like to have.

Thanks,

Rob–
Robert Laughton www.leatheriquecanada.com
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php

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The archives and FAQ will answer many queries on the XJ series…
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In reply to a message from Robert Laughton sent Sun 26 Aug 2007:

I am currently out of town for the week in NC. I will send
information about the upgrades when I return home next weekend.–
The original message included these comments:

I too would like a description of the work. I removed all the AC
stuff after trying in vain to get it to work satisfactorily. These


'71 XJ6 383/200R, '74 XJ6 383/700R, '74 Nova SS Glendora, CA
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
–Support Jag-lovers - Donate at http://www.jag-lovers.org/donate04.php

===================================================
The archives and FAQ will answer many queries on the XJ series…
FAQs: http://www.jag-lovers.org/xjlovers/xjfaq/index.html
Archives: http://www.jag-lovers.org/lists/search.html

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any chance you still have this info? i’d like to add the center vents to my S1 xj6, i have the upgraded condenser and compressor from the ls swap.
what needs to be plugged?
i believe i vacuum operated heater valve. do i need something like this?
https://www.summitracing.com/parts/vta-50507-vua?seid=srese1&cm_mmc=pla-google--shopping--srese1-_-vintage-air&gclid=Cj0KCQjw6rXeBRD3ARIsAD9ni9BsR8pLE279SlLkFqTMNX7Bbt1xcMofvPpugXuDV055rMhS4WnZfYYaAsPtEALw_wcB
any help would be appreciated!

Jay

Send me your email address and I have the whole thing recorded and ready.

mabryroger@hotmail.com

Roger Mabry

Jay

That is the modern replacement for the heater control for the Jaguars. Just divert the vacuum line to the remaining center grill fresh air control. I installed the motor valve outside the car and put the small ECU unit in the passenger side behind the covering piece. You can use the stock Jaguar knob so it all remains normal…the wires on the control unit point downward and are VERY fragile… use a small thick washer on the rear and then

again a thin washer behind the retaining nut. Press on the Jag knob!

Adding the center vents is another task… you have to remove the center control piece on

the bottom of the evaporator. If you have a radio that is more than five inches deep it will

severely deform the new hose but it will work if you get the proper type of AC hose. See the photos of where to mount the hose using just the outer ring of the old component. This will get you a new single vent. You then have to cut a hole in the upper parcel tray rear to feed the hose(s) into the compartment

The second vent comes from the RH hose that feeds the right rear passenger. I used a piece of appropriate sized 90 degree PVC and put it over the top of the opening and attached a hose and fed it around the to the new hole in the parcel tray. Then find a dual vent or even just the one from the bottom hole… I have the part number somewhere and will look for the one I am using now. With just one hole I used a billet vent cover… see photo… I still have it and would sell it to you cheaply… Having one vent is easier… two takes all the parcel tray space. You can use a Jaguar side vent from a later XJ… I had that for a while…

Let me know if you want more information or pictures.

Roger Mabry

outstanding, sir!
email to be sent
any pics and info would be great. i don’t see the need to keep any bit of the small tray above the radio, as i am in arizona and need max cooling. can the entire tray be filled?
we must be the only 2 people left in the free world still using hotmail… lol!