alloy rad?

[jamie gsi16v]

was on the track at donnington at the weekend giving the let some stick and evan with a spal fan on constant on the gsi rad it still got to the red on temp on a 20min session, got abit worried so im now after keeping it cooler, thinking about another spal fan and possible big alloy rad but where can i get the rad from, seen alot of escort turbos etc using them?

cheers j

[Ben]

Just fit a larger Vaux rad such as a Calibra etc.

[jamie gsi16v]

carnt because of the boost pipes off the front mounted intercooler

[Stuart]

are you inlet temps high? as bad cooling for things like the charge etc mean the engine will run uber hot. try water wetter etc too

[jamie gsi16v]

the turbo side of my fmic gets red hot but the inlet side of the fmic is freezing cold, the cars just getting really hot coolent wise? dont want to use water wetter as the car gets very regular services and it will turn out quiet expensive refilling it everytime?

[Stuart]

hmm a hot fmic would mean that the air hitting the rad would be V hot too... thus cooling it less.

basically all im saying is that its not just the coolant system that causes the LET to get insanely hot lol

[Ben]

How big is your FMIC sounds like your blocking a large amount of your coolant rad with it.

[Welsh Dan]

the turbo side of my fmic gets red hot but the inlet side of the fmic is freezing cold, the cars just getting really hot coolent wise? dont want to use water wetter as the car gets very regular services and it will turn out quiet expensive refilling it everytime?

It'll cost a lot less than the oil :).

[jamie gsi16v]

the oil doesnt get changed as much as the water, my fmic is 12ltr and is blocking around half the rad but the fan should help and also the air still flows through the fmic? maybe two constant fans will help much more and plenty of antifreeze? its fine on the road just not track?

[Stuart]

less antifreeze actually. more "straight water" since its got better heat transfer properties.
Dare i ask why the water gets changed more than once a year? lol

the spacing between the fmic and the rad is key too otherwise the hot air simply wont have a chance to sool down before hitting the coolant rad.

[jamie gsi16v]

just find it easy to change and think why not, no contamination if thats what your thinking? carnt drop the fmic down any more n theres a two inch gap between cooler and rad

[Stuart]

lol so you change the coolant for the hell of it.... bit of a waste of time and money there.. it dosent "wear" out that fast ;) you benefit more from polishing the damn thing lol

[Dar]

Maybe worth checking your thermostat as well. Or just chucking the thing away. More fans will not help when your on a run because the air is already getting pushed through the rad. Fans help get rid of the heat once you slow down.

Also your water pump would be worth checking out as well. If both your thermostat and water pump are ok though I reckon water wetter would be worth a go in the first instance, just to see how much difference it makes. That in turn will hopefully give you an idea of how much extra cooling you may need.

[Stuart]

that or hes got a blocked rad...

[jamie gsi16v]

will dumping the thermostat cause me any problems? the temp seems perfect on normal driving or short outbursts, never leaves halfway?

[craig green]

It'll be slower to warm up will struggle to get to running temp in the winter but otherwise will be flowing max coolant through the rad at all times.

I used water wetter a few times, is good.

[Give it some rev]

It'll be slower to warm up will struggle to get to running temp in the winter but otherwise will be flowing max coolant through the rad at all times.

I used water wetter a few times, is good.

your right about it'll take ages to warm up and thats a bad thing as thats when engine wear occurs most when starting from cold

[craig green]

yes. Typically oil takes twice as long as your coolant to reach normal operating temp.