After overhauling the cooling system per The Book, I replaced the
fan (cracked) and clutch (leaking goo) with a 16� Perma-Cool
electric. Now, I�m below N on the road, but still see the
temperature gauge creep up above N in stop and go traffic. The
electric fan doesn�t seem to blow as hard as the old belt driven
fan, and I suspect I�m not getting enough airflow. I�m debating
whether to 1)replace the stock electric fan 2)replace the Perma-
Cool with another brand or 3)reinstall a belt driven fan. Anyone
have experience with this fan, or others that don�t provide enough
airflow?–
Mark Smith '87 XJ-SC
Russellville, Arkansas, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
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Mark,
It depends on how much, but IMHO creeping a little above N in
stop-and-go would not warrant extreme measures. I am still running my
mechanical
along with a v12s.com auxiliary. I believe the latter is a Spal mounted
by v12s.com in their own mounting hardware/shroud. I’m pleased with it.
Ed Sowell
76 XJ-S
After overhauling the cooling system per The Book, I replaced the
fan (cracked) and clutch (leaking go) with a 16� Perma-Cool
electric. Now, I�m below N on the road, but still see the
temperature gauge creep up above N in stop and go traffic. The
electric fan doesn�t seem to blow as hard as the old belt driven
fan, and I suspect I�m not getting enough airflow. I�m debating
whether to 1)replace the stock electric fan 2)replace the Perma-
Cool with another brand or 3)reinstall a belt driven fan. Anyone
have experience with this fan, or others that don�t provide enough
airflow?
Mark Smith '87 XJ-SC
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on 8/24/03 1:44 PM, Mark Smith at masxjs@hotmail.com wrote:
After overhauling the cooling system per The Book, I replaced the
fan (cracked) and clutch (leaking goo) with a 16� Perma-Cool
electric. Now, I�m below N on the road, but still see the
temperature gauge creep up above N in stop and go traffic.
Have you rodded or re-cored the rad? Maybe that is the problem.
Re-cored mine and replaced the clutch fan with a 14"Chevy fan from the
wreckers. Temp. does not reach N under any conditions.–
Cheers,
Les Marston,Alberta,Canada.
'87 xjs,
'79 Harley Davidson.
“Cats & Hogs”
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Mark said:
I’m debating whether to 1)replace the stock electric fan 2)replace the
Perma-Cool with another brand or 3)reinstall a belt driven fan. Anyone have
experience with this fan, or others that don’t provide enough airflow?
I sure do! My experience is the same as yours. I blew off the stock temp
guage a while back and have seen the temp get to 230 in traffic. This is
when I’m just off the interstate, in 90+ deg. and hit that stop light at the
end of the exit to begin doing the stop and go.
I like the fan. It is quiet and has the highest CFM of any of the
aftermarket fans I’ve seen. That’s why there is a second one on my work
bench. Before I put my radiator back in (I’m replacing my timing chain and
tensioner) I’m going to fab a shroud for dual 16" Perma-Cools. There is no
dought in my mind that that will cure the problem.
Best of luck,
Dave
Atlanta
84 XJ-S HE
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In reply to a message from Mark Smith sent Sun 24 Aug 2003:
One thing I did with my XJS that made a noticeable difference that
I haven’t seen in at least a couple of posts having to do with
overheating…
…I removed the lower valance - the front spoiler edge is attached
to this, too, but there is no need to totally remove the spoiler -
and ran a mini-blind vane in bewtween the two coolers that are
sandwiched next to eachother, just under the radiator. I have read
these should rest about 1/8 inch apart - mine were about a 16th of
an inch apart at the drivers aisde, and virtually touching on the
other side. After cleaning out must of the crud (hair, leaves and
other miscellaneous junk), I shot pressurize air into them from the
front, then did the process again. Finally, I ran some fine sand
paper up and down in between the coolers and got the last bit out -
when done, I could see light through the two coolers. All tolled,
about a cigarette carton sized pile of crap was removed! Replace
the valance and you are good to go. These two coolers (oil and
trans, I think) are set to get various air-blown road crap in
between them, thus killing any through-air flow AND insulating
them. A dirty, pain in the ass job - but, like I say, gave me
DEFINITIVE improvement in cooling and required only elbow grease.
In addition to this, I use water-wet, a solvent additive that is
supposed to help antifreeze run 5-10 degrees cooler (or your money
back), replaced hoses, flush my coolant system, and added
the ‘Kirby Palm’ cold-air induction system by cutting holes behind
the headlights, JB Welding PVC couplers to these holes, cutting the
horns off of the air intakes, then running high-heat collapsible
hoses to these PVC couplers.
Again, a TON of work, but mostly just that - for what was yield,
awesome bang for your buck.–
Derek Smith
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
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Mark said:
…Did you install a new temp gauge? What did you use and where did you put
it? There’s not much real estate on the dash. …
I put a mechanical temp guage from Sunpro where the driver’s ashtray was. I
did a kindof quick and dirty install because the dash, ski slope, etc. will
be going bye-bye (if I ever get time, or to that point, or ?). My stock
temp guage was going screwy. I could turn the key off when it was toward
the top of the N, then turn it right back on and the guage would show a
little hotter or a little cooler. Besides, for all of the talk about where
the needle is in relation to the N it doesn’t mean much since the condition
of the sender and the guage can change “normal” from one car to the next. I
really prefer knowing the actual temperature.
Dave
Atlanta
84 XJ-S HE
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In reply to a message from Les Marston sent Sun 24 Aug 2003:
Yep, I rodded the radiator, replaced the header tank and crossover
pipe with the Cathouse Spares SS version, and added Gano filters.
Any advantages to recoring the rad if it’s in good enough condition
to rod?
BTW, how hot does it get up there in Alberta? Might be a bit
hotter here in Arkansas.–
Mark Smith '87 XJ-SC
Russellville, Arkansas, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
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Spent last year in Winnipeg, Manitoba and have spent a few years in Alberta
and British Columbia over the years.
I can tell you that Canadian cars (particularly in the prairie regions
Manitoba, Saskatchewan and Alberta) would certainly see more temperature
extremes than most vehicles. It is not uncommon to reach -40C in the winter
and then +40 during the summer a few months later. Last year in Winnipeg, I
even witnessed a 30 C temperature change in a matter of a few hours. I would
wager that if the gentleman from Alberta lived in eastern Alberta, his day
time temps during the summer would indeed rival Arkansas.
Patrick 82 XJS HE
currently in Ontario-----Original Message-----
From: owner-xj-s@jag-lovers.org [mailto:owner-xj-s@jag-lovers.org]On
Behalf Of Mark Smith
Sent: August 26, 2003 7:48 AM
To: xj-s@jag-lovers.org
Subject: Re: [xj-s] Overheating in traffic
In reply to a message from Les Marston sent Sun 24 Aug 2003:
Yep, I rodded the radiator, replaced the header tank and crossover
pipe with the Cathouse Spares SS version, and added Gano filters.
Any advantages to recoring the rad if it’s in good enough condition
to rod?
BTW, how hot does it get up there in Alberta? Might be a bit
hotter here in Arkansas.
Mark Smith '87 XJ-SC
Russellville, Arkansas, United States
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