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Disco 1 trany temp range and radiator by-pass

Posted: Sun Mar 09, 2008 9:45 am
by kitacooch
Hi guys, what about trany temp, anyone know what the prefered operating temp range is for the trany in a disco 1. Does it or should it get much hotter when towing or working hard 4driving.
Why, i have a disco 1 with crapped out radiator, but i have another wrecking disco 1 but manual with a good radiator, am planning to use the manual radiator and just by pass it with the trany line from the trany cooler so that the trany cooler no longer goes into the radiator but operates independantly. They have quite a big trany cooler so can't see any probs doing it, any comments out there. I do intend to set up the temp guage before i make the change to give ma an indication, however the trany line i will remove is already dammaged,, bit squashed if you like and so i will not get a true indication anyway. So any feed back will be much appreciated.
Cheers Guys.

Posted: Fri Mar 14, 2008 6:38 pm
by kitacooch
c'mon guys any comments, be much appreciated.

Posted: Sat Mar 15, 2008 7:10 am
by bigbad
Dont know the actual temp, but they do get hot, especially towing over hills. Heat is the biggest killer of them. Cant see that the pipe being damaged would give a false reading, unless it so so squashed that it is heating the fluid more being forced through it.
I am not sure the differences between the radiators, I always thought they were the same, man and auto, the auto cooler is in front of the rad. Some of the 3.9s, late 94 had an engine oil cooler in the radiator.

Posted: Sun Mar 16, 2008 10:25 am
by kitacooch
bigbad wrote:Dont know the actual temp, but they do get hot, especially towing over hills. Heat is the biggest killer of them. Cant see that the pipe being damaged would give a false reading, unless it so so squashed that it is heating the fluid more being forced through it.
I am not sure the differences between the radiators, I always thought they were the same, man and auto, the auto cooler is in front of the rad. Some of the 3.9s, late 94 had an engine oil cooler in the radiator.

:oops: your right, the extra inlet and out let on the rad is for the engine oil cooling, so what you think about getting the auto cooler off my wreck and using it as the engine oil cooler? As the rad off the wreck does not have the allocation for the engine oil cooling.

Posted: Sun Mar 16, 2008 2:27 pm
by bigbad
Actually just found I was wrong, my 94 disco has an auto cooler in one header tank and an engine cooler in the other.

Posted: Sun Mar 16, 2008 7:38 pm
by kitacooch
bigbad wrote:Actually just found I was wrong, my 94 disco has an auto cooler in one header tank and an engine cooler in the other.
Are you sure?? i think mine has engine oil cooler one tank, transfer cooler other tank and external tranny cooler in front.

Posted: Sun Mar 16, 2008 7:58 pm
by cloughy
kitacooch wrote:
bigbad wrote:Actually just found I was wrong, my 94 disco has an auto cooler in one header tank and an engine cooler in the other.
Are you sure?? i think mine has engine oil cooler one tank, transfer cooler other tank and external tranny cooler in front.
Transfer cooler :shock: think you'd be best to take another look ;)

Just take the 2 rads to a rad shop and have them change the tanks over, all goes back correctly then

Posted: Mon Mar 17, 2008 9:57 am
by bigbad
the trans cooler in front is plumbed to the one in the header tank.

Posted: Mon Mar 17, 2008 9:35 pm
by kitacooch
bigbad wrote:the trans cooler in front is plumbed to the one in the header tank.
:oops: your spot on, i have engine oil in and out of the radiator, tranny in and out but into tranny cooler on front, should have had a closer look, but have spent most of my time under the vehicle at the other end.

Posted: Mon Mar 17, 2008 9:38 pm
by kitacooch
cloughy wrote:
kitacooch wrote:
bigbad wrote:Actually just found I was wrong, my 94 disco has an auto cooler in one header tank and an engine cooler in the other.
Are you sure?? i think mine has engine oil cooler one tank, transfer cooler other tank and external tranny cooler in front.
Transfer cooler :shock: think you'd be best to take another look ;)

Just take the 2 rads to a rad shop and have them change the tanks over, all goes back correctly then
Problem is i could spend dollars only to find that the radiator is on its last legs.

Posted: Mon Mar 17, 2008 9:42 pm
by cloughy
kitacooch wrote:
cloughy wrote:
kitacooch wrote:
bigbad wrote:Actually just found I was wrong, my 94 disco has an auto cooler in one header tank and an engine cooler in the other.
Are you sure?? i think mine has engine oil cooler one tank, transfer cooler other tank and external tranny cooler in front.
Transfer cooler :shock: think you'd be best to take another look ;)

Just take the 2 rads to a rad shop and have them change the tanks over, all goes back correctly then
Problem is i could spend dollars only to find that the radiator is on its last legs.
Well when the radiator man removes the tanks, he'll tell you whether its farked or not, you seem to be making this hard :roll:

Early Rangie's ONLY ran the front auto cooler, pretty inadequate piece of crap, but you should be able to do the same, early Rangies also DIDN'T run any engine oil cooler, so no reason you can't do the same there either

Why not bodge it up instead of fix it properly :armsup: