Club 80-90 Forums

...agreed, total mystery. Nice bill of materials would be useful.

Other than that if your oil temp goes over 120, stick the heater on, aim it at the windscreen and open your quarter lights / windows. That’ll draw the heat away from the engine and it’s free

Finally, pop a 80 (instead of 87) degree thermostat in for £6 and let the radiator do the work of cooling.

ebay item 272963046228 should fit fine but pipes a little short for front mount

trouble with the thermostat is you have to change it summer and winter have tried it can't be arsed
80 deg in winter is too cool

Oil cooler will work much better at the front of the van.

Don't get too hung up on how many rows either, area / efficiency is what matters. I haven't looked to see how much room there is at the front of a T25, but something like this would work well from a packaging and cooling perspective. it's normally mounted in front of, at the bottom / just below the rad. Fewer concerns about stone damage too.

These coolers are fitted to Saab Aeros, which deliver 260 HP, so plenty of cooling capacity



Available second hand if you want, you just need to figure out how to mount and route the pipework

I posted this on another thread but same applies:
Was thinking of trying something like this on our 1.9DG
https://www.ebay.co.uk/itm/UK-15-ROW-AN ... SwW8RbBkaR


The idea would be to fit it in the 'void' to the right of the engine so that it is in the air flow created by the pillar vent, would probably require a suitable shorter oil filter.

Not as efficient s a front mount but still increases cooling capacity due to increase in exposure and also minor increase in oil capacity.

Hi Ash

T25 WBX I think is 3/4 UNF filter thread so that should work

I think you're getting into a whole other area of discussion as to how much air actually flows down the air vent on a WBX. (it obviously does on an air cooled). I believe there are pages of heated discussion on that subject and air diverters for the vents on the US forums

In combination with a fan to force airflow that could also work

They also do a 10 row which is a bit cheaper but I was just going to go for whatever would fit the space best. Then mount using something simple as https://www.ebay.co.uk/itm/Saab-Renault ... SwmLlX8nHb


As for airflow - it really doesn't matter about the much debated up or down, in or out - even without significant airflow the cooling effect will still be present.

Hi 937

I lost the will to live after a few pages of the thread on airflow in the rear vents

Plenty of air under my Caravelle

Cobra88 wrote:Hi 937

I lost the will to live after a few pages of the thread on airflow in the rear vents

Plenty of air under my Caravelle

Yeah..... the problem is exposure to stones being thrown up, holes in an oil cooler can end in a bad way.

The only rear engined car I can think of that doesn't have front oil coolers are early low powered 911's (17 litre dry sumped) and VW 411/412, both of which had proper engine mounted coolers.

I think I read more of the thread..... it's a bit like QI, one of those questions where "Nobody Knows"

need a rear mounted solution for it to be popular

I will make a scoop with a stoneguard too.

If I ever get time i'll also do an install guide

Rick

ash1293 wrote: As for airflow - it really doesn't matter about the much debated up or down, in or out - even without significant airflow the cooling effect will still be present.

I wouldn't agree on that. There's a reason why rads are up front and they have fans on for when the engine is getting hot.

Dunno

I have raced many cars over the years with rads in the bootfloor that worked easily as well as a front mount
Especially on a Brick.

You just need to think about high and low pressure areas.

plenty of both on the T25

I also saw a fan to fit that cooler that Ash linked and a kenlowe type thermoswitch setup

the problem with front mounting an oil cooler on the front of a T25 is pressure drop with lines that long
I would rather lose a little effectiveness and keep oil pressure.
(that's only a guess but I know from my work that long oil hose runs sap pressure quite effectively) (Aerospace)

937carrera wrote:

ash1293 wrote: As for airflow - it really doesn't matter about the much debated up or down, in or out - even without significant airflow the cooling effect will still be present.

I wouldn't agree on that. There's a reason why rads are up front and they have fans on for when the engine is getting hot.

Agree if we are talking about a main radiator but we are on about an auxially oil cooler here supplementing the cooling not replacing it.

While certainly quite a few race hillman imps & derivatives went for front mounted conversions thos that retained the rear mounted radiator often would fit an additional oil cooler in the bay. I also know whan I was running a fast road engined mini I crammed in an oil cooler near the top of the engine bay opposite side to the side mounted radiator to good effect ( couldn't quite squeeze it in behind the grill I was running)

Bottom line is that by increasing the surface area exposed to air (or water in liquid oil oolers) you are incrasing the cooling capacity unless the air temperature is greater than the oil itself. While not as efficient as a radiator placed in direct airflow it should still have a significant measurable affect.