Topic: Right, this is serious!! (Read 46978 times)

JamesH · « **Reply #50 on:** May 26, 2014, 08:22:52 PM »

Infrared thermometer is great for checking temps all over the Jeep and accurate to 2-5 degrees even the cheapo ones.

georgen · « **Reply #51 on:** May 26, 2014, 08:27:12 PM »

just make sure you read temps from the same range as in distance from what you are reading and point gun straight at it.

JamesH · « **Reply #52 on:** May 26, 2014, 08:33:05 PM »

Closer the better

Bulldog67 · « **Reply #53 on:** May 26, 2014, 08:44:48 PM »

infrared ordered

5536paulj · « **Reply #54 on:** May 27, 2014, 12:23:08 AM »

Ade,
As mentioned earlier in the thread this could well be the gearbox, my cj doesn't overheat these days in normal circumstances, but on longer journey's it gets hot, both to and from breakout it got a bit hot at the end of the journey, and spewed some atf out.

You could have fried an egg on the transmission tunnel by the time I got home,which I think is down to the big tyres / gearing and the stock cooler in the rad not being able to keep up. A TH400 uses 25bhp to make it work in normal circumstances, this must be released as heat!

PJ

ferretjuggler · « **Reply #55 on:** May 27, 2014, 05:42:16 AM »

That's interesting.
In metric terms that's about 18 KW of heat to be disipated on top of the heat from the engine.

Was there ever any resolution of the "grilled mature cheddar" mystery?
I have an idea that it might have been the festered gunge on the TH400 case.
What axle ratios are you running with those 35" tyres?
MIGHT possibly be causing excessive heat to be generated by the transmission? ??

Bulldog67 · « **Reply #56 on:** May 27, 2014, 06:49:47 AM »

axles are 4.88

cheers PJ - I may sling an trans cooler on anyway just for the heck of it - that fuel injected CJ I had also ran one

so: temp sender, thermostat, water pump, transmission cooler

I guess its not finished yet then

Bulldog67 · « **Reply #57 on:** May 27, 2014, 06:58:03 AM »

180 or 195 degree thermostat?

ferretjuggler · « **Reply #58 on:** May 27, 2014, 07:20:54 AM »

You running a Milemarker part time kit with the 16% raise in gearing or the standard ratio?

I only found out last night that they were available with standard ratio.

ferretjuggler · « **Reply #59 on:** May 27, 2014, 07:37:27 AM »

Dunno about the stat.
I usually fit a hot one cos I like the heater nice n toasty in the winter.

Got my own theory about transmission fluid coolers.
Run the fluid through the independent cooler first then through the internal one you got now.
That will stabilise the temperature so even on freezing cold winter days the fluid returns to the transmission at about 85º C
I hope that makes some sort of sense.

Bulldog67 · « **Reply #60 on:** May 27, 2014, 07:38:17 AM »

Milemarker 2wd part time with 16% overdrive

And the cheese smell never came back so must have been something getting burnt off after the rebuild

JamesH · « **Reply #61 on:** May 27, 2014, 07:46:25 AM »

When fitting a trans cooler you could also fit a temp gauge for it and then be able to monitor it.

ferretjuggler · « **Reply #62 on:** May 27, 2014, 08:13:13 AM »

Hmmm.
Gearing sounds about right actually.
For Highway use anyway.
Just worked it out you're about 10% higher geared than my old black cherk.
That always felt well pokey with a 360 and 4 bbl carb, a little undergeared even.
Yours should be fine with a 401

ChrisS · « **Reply #63 on:** May 27, 2014, 04:21:35 PM »

Quote from: ferretjuggler on May 26, 2014, 08:00:42 PM

FFS that's peanuts.

BD was recently moaning about the heater being crap.

I wonder if the water pump is actually doing anything?
Couldn't be something as simple as the impeller fell off could it?

Cooling system would still work on thermo syphon.
Up to a point.

Was also going to suggest a problem with the pump. A stock fault on the Alfa V6 is the pump impeller getting loose on the shaft. Cooling perfect at low speeds (revs), no bother in traffic etc, get it up to speed for more than a few minutes and it starts to overheat.

Could be impeller falling of pump shaft or pump drive slip maybe.

ferretjuggler · « **Reply #64 on:** June 02, 2014, 06:23:48 PM »

Ordered me one of those infra red thermometers and it arrived today.
Interesting.
The ambient temperature in my bedroom is 24ºC
My skin is 29, and Dwezil is about 27.
I thought I'd be warmer than that

Maybe I'm part Lizard?

Bulldog67 · « **Reply #65 on:** June 02, 2014, 06:28:03 PM »

I tested all my nippers and Mrs BD and we came in at the same ish temp so its accurate in a sense

BJs shopping today - sender, fangly thermostat and fangly waterpump, rad cap, speedo cable, and some gaskets - shipping was double the cost of the parts via ups

luckily they also have the USPS opion which was $175 cheaper

Still undecided on the trans cooler

wildwood · « **Reply #66 on:** June 02, 2014, 06:36:44 PM »

Quote from: ferretjuggler on May 27, 2014, 07:37:27 AM

Dunno about the stat.
I usually fit a hot one cos I like the heater nice n toasty in the winter.

Got my own theory about transmission fluid coolers.
Run the fluid through the independent cooler first then through the internal one you got now.
That will stabilise the temperature so even on freezing cold winter days the fluid returns to the transmission at about 85º C
I hope that makes some sort of sense.

If you have a thermostat on your trans cooler then on cold days in deepest Kent Snow it should bypass the rad/ cooler until up to working temp.
Also .....As JP mag did...... They had a temp gauge measuring before and one after the cooler....... So they could monitor the difference...I seem to remember they had them mounted on the windscreen pillar .....IN temp had a gauge with red lighting.....and OUT temp had blue lighting (camp or what???) and.something else to watch and fret about whilst traversing the queens own highway

JamesH · « **Reply #67 on:** June 02, 2014, 06:40:36 PM »

I can't think of any harm that can come from a separate trans cooler, even the XJ has one and that doesn't have a manly engine and trans.

Bulldog67 · « **Reply #68 on:** June 02, 2014, 06:47:46 PM »

Quote from: wildwood on June 02, 2014, 06:36:44 PM

and.something else to watch and fret about whilst traversing the queens own highway

tell me about it

I know your right James, just being a tightwad TBH - the trans tunnel does kick out some heat on a journey - no fun in the summer

Bulldog67 · « **Reply #69 on:** June 02, 2014, 06:54:22 PM »

Done

bigjeepzj · « **Reply #70 on:** June 02, 2014, 07:20:15 PM »

Quote from: ferretjuggler on June 02, 2014, 06:23:48 PM

Ordered me one of those infra red thermometers and it arrived today.
Interesting.
The ambient temperature in my bedroom is 24ºC
My skin is 29, and Dwezil is about 27.
I thought I'd be warmer than that
Maybe I'm part Lizard?

stick it in your ear

ferretjuggler · « **Reply #71 on:** June 02, 2014, 07:32:37 PM »

Got a separate trans cooler on the Laredo.
Factory fitted by the look of it.
Can't remember if it had a stat or if the main rad had the internal cooler too.
Dunno if that means that all the Chrysler 727 boxes had them?

Maybe part of an option package?

donk498 · « **Reply #72 on:** June 02, 2014, 08:07:36 PM »

I'm running a 9 row cooler on the xj, which bypasses the rad and standered cooler. It's mounted where the viscous fan would be. I don't have temp senders (would like them though) but i assume its doing the job as I have yet to blow a seal as has happened to the last two I had.

Dave The Sparky · « **Reply #73 on:** June 02, 2014, 08:52:16 PM »

According to the 81 to 86 manual you should probably have a seperate cooler as well as the radiator one.

Bulldog67 · « **Reply #74 on:** June 02, 2014, 08:57:15 PM »

Weird coz i thought I was 79 but it has cruise and that is 81 onwards as well

Author Topic: Right, this is serious!! (Read 46978 times)

georgen

5536paulj

ferretjuggler

ferretjuggler

ferretjuggler

ferretjuggler

ferretjuggler

ferretjuggler

donk498