Thread: Puma Radiator Options

maybe the extra power to drive the portals and tyres, the change in aerodynamics due to the portals, plus the remap all add up to the poor little engine that could but now stuggles a bit?

Are you reading to cut a vent in your guard yet

Originally Posted by uninformed

maybe the extra power to drive the portals and tyres, the change in aerodynamics due to the portals, plus the remap all add up to the poor little engine that could but now stuggles a bit?

Are you reading to cut a vent in your guard yet

I would like to exhaust a couple of other options first.......

I am heading over to brads on Tuesday afternoon and we are going to flush the system and drop in a new thermostat as well as check the fan.

Will see how that goes and if it's still not happening then it might be cutting time...... I am happy to hear that people don't think it's a head gasket.....

I am no mechanic,thats JCs department......

But if it's directly affected by ambient temperature,you would think it needs a bigger rad,maybe the bigger one you fitted just wasn't big enough.
The mods for the car may have caused the issue.

I know in refrigeration we will fit a slightly bigger condenser coil to a system and it makes bugga all difference.We have to fit one way bigger to do the job,slightly bigger often doesn't help much.

Sometimes we also have to change the fans on the condenser coil as well,as a thicker condenser actually reduces the airflow.

Just my 2 cents worth

My theory then is as follows,

Bigger/ thicker IC core will cause less actual flow through the radiator core, coupled with higher IC core temps due to working that poor little engine harder, then less actual heat exchange from the rad due to the above is a distinct possibility. Fitting a bigger rad won't help unless you are getting air to it, and that air isn't preheated by another heat exchanger first, IE a nice big intercooler..

try returning the standard fuel map, and refitting the standard IC, this is a pain I know but will once and for all prove a theory.


JC

I have a TD5 with the same Radiator from Andrew my car also has an Allisport Intercooler.
I have found that the combination doesn't have any negative effects in terms of cooling.
Even in 40 Degrees C things dont go over 93 Degrees C and usually sits at 89-90 Degrees C
With the standard radiator it could go up to 98 Degrees C

I've got a Alli-Sport inter cooler, stock radiator, BAS map, cat/centre muffler removed.
Use to tow a Coromal off-road van (2.4t) through out Summer, 110km/h on the freeway, pedal firmly push into the rubber mat on some hills, 40c outside temps on occasions and never ever reached the engine heat cut out.

Can't give temps as no scan gage (yet).

But surely the portals couldn't be any harder to push along than that caravan.

The winner seems to be the fan, we changed it over as it seemed to be stuffed.

Also flushed the system and dropped in a new thermostat. On the drive home I was sitting on 100km/h between 84-91 deg. It got no higher than 93 the whole run however it is cold in Sydney tonight so time will tell.

Also changed the serpentine belt while it was all apart as after 90,000km it was starting to crack.

Thanks for all your help and input I will let you know how i go on the run up the coast early Friday morning, its always the hills out of Sydney that get it hot under the collar.

That sounds a little more like it!