radiator

1

1hc72

Member
I was just wondering would the radiator from a Scout with the 345 fit under the hood and cool my 1210 pickup with the same 345 v8?oh almost forgot with the 727 tf auto tranny.
 
Well, you could probably fab it in to make it fit, but the sii radiator has less surface area than a f/s pickall radiator. That reduction in size coupled with the weight differential between vehicles could lead to overheating issues. Your best bet is to stick with a radiator that was made to fit the vehicle.
 
Ok, I kinda thought so but wanted to be sure, also when I was flushing my rad I had red fluid coming out of it(wil post pics)should I be worried about somehting else goiung bad?
 
Well, if it is the a/t radiator with the small tranny fluid cooler portion, then you could have a leak and your tranny fluid is mixing with your coolant.....:confused: you should have 2 steel lines going in and out of the bottom of the drivers side of the radiator.
 
I have one on top and one on bottom, if it is mixing does this mean? My atf lines ar on the left side of the rad. If the who mix is this going to be detremental to my trany and engine?
 
Last edited:
1hc72 said:
I have one on top and one on bottom, if it is mixing does this mean? My atf lines ar on the left side of the rad. If the who mix is this going to be detremental to my trany and engine?
Click to expand...

Not the water hoses...

There should be two steel lines ("like" steel brake lines but a little bigger in diameter) running from the 727 transmission to the bottom of the driver's side radiator (as stated above).

But, I would think (do not know) that such a radiator would be constructed so that the two (coolant and atf fluid) would not mix. Definitely not good if they do "mix".

Post a picture of the "contents" of the radiator...

Is it possible that you disconnected these steel lines and drained the transmission cooler at the same time you drained the radiator?
 
Tranny fluid seaping into the coolant probably wouldn't hurt your engine, but you would want to do a cooling system flush and prevent it from happening in the future. Coolant mixing with tranny fluid and circulating through the tranny would be very bad. Either way, you need to verify whether the coolant was contaminated while you drained it or if it was that way before you drained.
 
While a Scout II and a "square body" pickall appear to use the same radiators, they are not!

The Scout II crossflow unit is 4" narrower than a pickall unit. The height of both units is the same. Thus the sii radiator has a somewhat lower heat exchange capacity.

The heat exchanger for the slushbox is inside the driver side tank on the crossflow radiator. It is a completely separate "heat exchanger" inside of the "heat exchanger"! The plumbing must be kept separated internally and externally.

The only way to truly test a heat exchanger is a pressure test. The radiator should never be pressurized to more than 25psi during testing or it May be damaged with leakage induced! The transmission heat exchanger should not be subjected to more than 50psi during testing. Both devices should hold pressure indefinitely.

This pic shows a Scout 80 radiator under pressure test at 10psi. I don't pressurize a conventional radiator on these older rigs to more than 10psi, they use a 7psi pressure cap.
 

Attachments

  • Radiator pressure test1.jpg
    Radiator pressure test1.jpg
    105.5 KB · Views: 451
Last edited:
Another shot of the same radiator, with identification of the leak points.

This one was pressurized "dry", then I spray on a liquid soap/water solution out of a mister bottle. This radiator did not leaks at 5psi...but did leak at 10psi!!

Failed solder joints on the inlet and outlet necks on these items are most common. And...ez to repair!

The more modern "crossflow" radiators were constructed for a higher working pressure than the earlier vertical flow items.
 

Attachments

  • Radiator pressure test2.jpg
    Radiator pressure test2.jpg
    150.1 KB · Views: 494
You must log in or register to reply here.
Back
Top