XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

V12 Engine Temperature

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Old 08-12-2018, 01:01 AM
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Default V12 Engine Temperature

Hi all

I have recently installed new thermostats as per Grants advice as used the Tridon TT228-180 units

So far so good, however just want to check with you experienced V12 owners of where my temp should sit.

As per the picture below, she runs quite a bit below the N on open highway and sits inside the N when town driving.

It is very consistent and it seems fine, but does it sit too low for open road?

Any thoughts here?

Cheers

 
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Old 08-12-2018, 01:30 AM
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Every single thing in this picture looks ideal, except you'll want to fuel up, and toss in some Archoil fuel treatment followed up with the oil friction modifier for 30% reduction in heat/friction ...but thats just my personal opinion.

My car with stock radiator, dead squirrels in between the grille, and hot summer weather still runs about the same on highway and jumps all around in city traffic, though you see alot more gauge movement when you run mostly water. If your concerned about temps a proper digital gauge wouldn't hurt, autometer is good, and you can hide a gauge inside the center armrest console if its too unsightly for the dash.
 
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Old 08-12-2018, 02:48 AM
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Cracker:
Perfect temperature.
Vancouver: tell me more about the friction modifier, please
 
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Old 08-12-2018, 04:03 AM
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SPOT ON.

Frame that thing, for the non-believers out there, that the stock system is just fine when sorted by us caring owners from years of previous abuse.

Drinks all round, YOUR SHOUT.
 
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Old 08-12-2018, 05:46 AM
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Thanks guys

i have to say the Tridon thermostats have definitely made it more temperature stable

cheers

 
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Old 08-12-2018, 06:55 AM
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Looks good. I'd be even happier, though, after getting a rough idea of actual temperature with an infra-red thermometer. The gauges on these cars can be flakey. "Middle of the N" might be 80ºC on one car, 90ºC on the next, and 100ºC on the next.

Cheers
DD

 
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Old 08-12-2018, 10:06 AM
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Looks great... Now get out and enjoy her.
 
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Old 08-12-2018, 02:14 PM
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Originally Posted by Greg in France
Cracker:
Perfect temperature.
Vancouver: tell me more about the friction modifier, please
Archoil makes industrial grade friction and combustion modifiers for engines, gearboxes, gas/diesel etc. I've always had night and day differences when using it to revive diesel trucks, and my old cars.

Check out some of the
now in those Ford trucks the injectors are operated by high pressure oil so any issues on the oil side will cause all kinds of sluggishness. My experience with the products on the XJS has been good I found it was noticebly smooth/revs much faster, and radiated less heat at idle.

http://archoil.eu/dealers-2/

 
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Greg in France (08-13-2018)
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Old 08-13-2018, 05:31 AM
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What’s the little LED peeking out of the steering wheel cover do?
 
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Old 08-13-2018, 12:57 PM
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I like it. I shoot for the center of the "N" with mine (see "Her Highness Pitches A Hissy Fit" thread), and I would be ecstatic if she ran that cool, especially in town.
 
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Old 08-13-2018, 09:10 PM
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Hi,

I think it has something to do with the central locking and alarming system.

Cheers
 
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