In reply to a message from Jim xjs sent Mon 15 Jan 2007:
I installed the BeCool on my 91 XJS convertible last winter. You
should search the forum and the Book for the entire discussion
about single versus double pass radiators and determine your own
There are other decisions you may want to consider such as
electric fans, coolant filters, and routing the crossover. I
installed the BeCool for several reasons, not least was the drain
so that I could clean the coolant filters routinely. The OEM Jag.
has no drain.
I bought the BeCool ‘‘T’’ pipe for the right side connector
although it was hideously expensive. Kirby mentions that a Y pipe
would be better. I agree but space is a problem. Making up
crossover pipes was not difficult. I went to the local auto store
and mixed and matched.
The web picture looks to me that both intakes are aimed at each
other on his T pipe. Would this make a difference in circulation?
I installed my T similar to the other forum pictures, that is
straight through for the right side with the left feed entering on
The fan shroud needs some adjustments and cutting for the drain
plug clearance. You will need to plumb for the smaller hose to the
header tank on the bottom inlet pipe. I also brazed the vent pipes
as detailed in the Book. Another question from that picture web
site: I thought the banjo bolt and vent needed to be reversed to
the left side and the photos showed no vent at all.
The major problem for me was plumbing the auto transmission
pipes. The BeCool has standard female SAE fittings inside the
radiator. Who knows what the Jag has? Metric or BSP or whatever.
I cut the old Jag female fittings off my old radiator and brazed
them to SAE brass fittings for the BeCool. I suppose you could
replace the OEM lines and connectors or some other more elegant
In running, the radiator was fine. I drove it through 98-100F
summer Interstate driving with my AC running and some idling and it
was within the N on the gauge and dropped below N at highway
speeds. This fall and winter it was running at the thermostats
temps. Very satisfied with it. I installed one coolant filter and
am still cleaning a gooey film from it 12 months later. Maybe old
The BeCool came from the factory and had aluminium chips in it.
I think from the extra vent holes drilled and tapped. I flushed it
several times before installation and still picked up lots of chips
in the filter. See my report last year.
The original message included these comments:
and A/C like the factory setup…But I’m thinking since I have
gone to all this time and trouble, why not upgrade if the single
inlet arrangement is in fact REALLY an improvement. All thoughts as
always are appreciated, but I would really like to hear from
somebody who is running this kind of setup to find out ‘‘The good,
The bad, and The Ugly’’ ;-). Like how hard to make up inlet pipes
and what kinds of hoses, etc. Thanks in advance, Regards, Jim
Durham, NC, United States
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