Thread: 4BD1 oil cooler.

One has to ask.......WHY?

Are you expecting problems, Diana?

Originally Posted by kaa45

One has to ask.......WHY?

Are you expecting problems, Diana?

Because the 4BD1 will be running without an engine fan and I'm concerned that with a regular vertical radiator of a series ilk wont have sufficient capacity to keep a 4BD1 pushing around 3 ton cool. So I'm looking for additional cooling options.

If I needn't worry, I wont.

Diana

BTW It will be having an electric fan on the radiator.

The radiator in the county is similar to a V8 radiator but don't think you'll have a problem. The Isuzu never runs hot even in 40+ degrees summer days.
And 3 ton won't even raise a sweat for a 4BD1.

Perhaps ask the defence guys what the Sigs do. In my day the series FFR's had an oil cooler fitted. Don't know what they do with the perentie.

I have got my 4BD1T to heat twice.

Both times involved the same skifield road, pulling max torque for about 13km of uphill to a max elevation around 2500m.
This is thin air (80% of sealevel density), highest possible load and speeds from 10-60km/h.
Basically it's as bad as things get.

3 ton in a series won't be a problem. My thermo fans don't even run in normal conditions. It takes a slow and steep hill to get them to turn on.

Originally Posted by kaa45

The radiator in the county is similar to a V8 radiator but don't think you'll have a problem. The Isuzu never runs hot even in 40+ degrees summer days.
And 3 ton won't even raise a sweat for a 4BD1.

Perhaps ask the defence guys what the Sigs do. In my day the series FFR's had an oil cooler fitted. Don't know what they do with the perentie.

Yes but the radiator in a SIIB is not the same size as the V8 radiator.

To give an example, the SIIB radiator is nestled in between what is the two footwells of the firewall of a 4 cyl Series Land Rover, but shorter because the accellerator linkage sits between the RHS of the radiator and the LHS of the drivers footwell.

The radiator is a 6 cyl Rover type radiator and sits about 600mm - 750mm in front of the engine so the engine fan on the Rover 6 is driven by a drive shaft (which runs through what is the transmission hump on a regular Landy).

I was planning to replace the engine fan/prop shaft with an electric type as fitted to a Holden Commodore. This will save noise from the fan prop shaft arrangement but need to be either on all the time or have a thermo switch in the system.

Does anyone understand the issue of cooling now.

Originally Posted by Lotz-A-Landies

Does anyone understand the issue of cooling now.

No. What do footwells have to do with a radiator? How big is this radiator (height, width, thickness)?

Originally Posted by Dougal

No. What do footwells have to do with a radiator? How big is this radiator (height, width, thickness)?

see pic above.

core: 450mm high - 480mm wide 80mm thick

BTW the steering box is in the space between the front of the footwell and the back side of the front panel (between the camera and the w/s washer bottle in the image)

Sounds like heaps of radiator for a 4BD1