After Market Intercooler & Engine Bay temps

[Coogs]

In an effort to reduce EGT's I'm considering whether to install a T&C Intercooler. If it's considered effective I'd go ahead even though it's a pricey item.
In addition, to help reduce engine bay temps, has anyone fitted spacers to raise the rear (windscreen end) of the bonnet. I've noted forum comments relating to 12mm of washers siliconed together used as spacers.
Has any member actually done that and if so does it work or is it just an easy route for bulldust and rain to enter the engine bay??

Will appreciate comments.
Gr8t forum this one!

[Col.T]

G'day Coogs,
I loved the idea of raising the back end of the bonnet to vastly increase air flow over the whole engine. Alternatively a second (reversed) air scoop over the turbo area to suck out the greatest heat.
Then someone said it would breach some bloody regs./laws because any oil from an exploding engine could flow over the windscreen and obscure vision. Or some such.
If you've got a free month or so, it's on a thread somewhere. Sorry I can't get the precise details but one of the gurus may come good.
Luck,
Col

[nissannewby]

Why do you want to reduce temps?

Believe it or not your vehicle is designed to make a low pressure area towards the rear of the engine and down and out. This inbuilt design allows more air to be drawn through. Keeping water and dust out is only one reason why your bonnet has sealing rubbers.

[Ben-e-boy]

Also the area at the bottom of the windscreen is high pressure, an opening at the back of the bonnet will actually force air in not suck it out.

[Coogs]

Col.T .... thanks for that!. I am definately looking for a way of reducing the high ambient engine bay temps. Had thought of an other reverse fitted scoop but didn't like the idea of cutting into the bonnet. I may have to re-think that option.
T'was sceptical about spacing the bonnet. Lot of CRD's over here (WA) and never seen that done. I suspect in event of insurance claim that spacing the bonnet might prove problematic.
Do you have any comment relating to T&C Intercooler?

[Coogs]

Why do you want to reduce temps?

Believe it or not your vehicle is designed to make a low pressure area towards the rear of the engine and down and out. This inbuilt design allows more air to be drawn through. Keeping water and dust out is only one reason why your bonnet has sealing rubbers.

Thanks nissannewby ........ I imagine the addition of bull bars, driving lights, winch together with after-market additions inside the engine bay would likely hamper the flow of air. My bay is quite cramped. Would like to hasten the exit of eng bay ambient temps, so for the moment I'll keep investigating.
Do you have any feedback about T&C Intercoolers fitted to CRD's?

[Coogs]

Also the area at the bottom of the windscreen is high pressure, an opening at the back of the bonnet will actually force air in not suck it out.

Thanks for the comment. I've dropped the idea of spacing the bonnet. If there's regulation prohibiting it then perhaps insurance cover becomes problematic. Not going to take the chance.

[nissannewby]

Thanks nissannewby ........ I imagine the addition of bull bars, driving lights, winch together with after-market additions inside the engine bay would likely hamper the flow of air. My bay is quite cramped. Would like to hasten the exit of eng bay ambient temps, so for the moment I'll keep investigating.
Do you have any feedback about T&C Intercoolers fitted to CRD's?

T&C? Where are they based and what are they offering?

[Coogs]

Why do you want to reduce temps?

Believe it or not your vehicle is designed to make a low pressure area towards the rear of the engine and down and out. This inbuilt design allows more air to be drawn through. Keeping water and dust out is only one reason why your bonnet has sealing rubbers.

Sorry- didn't answer your question "why reduce temps".
Last year, Bloomfield Track towing Tvan with GCVM @ 4530klg, EGT 660c, 2nd then 1st low range auto, speed- barely crawling. If the EGT's hit 700c for minimum seconds then the motor 'internally combusts'. B/c of that and other high-ish EGT's I'm looking to reduce input Intercooler and ambient eng bay temps.
I have to admit being partly to blame forgeting to re-tune the chip to towing and as a consequence feathering the throttle attempting to keep the EGT from rising- mistake!. But as such my thought remains 3L CRD's EGT's do get too high driving to conditions. Don't get me wrong, love the Patrol. It's never failed to do anything asked of it BUT the EGT's are an issue for me. ........... If fitting a T&C Intercooler (with integral fan) would drop temps by 80- 100c I'd probably bite the 'pricey' bullet and fit it. Will appreciate comment and experience of others.

[nissannewby]

Yeah my question was aimed at the engine bay temp reduction.

If the intercooler does a good job then your engine bay temp should also come down. If the cooler can keep your egt below 500 then your radiant heat from turbo and exhaust will be greatly reduced.

As for having a winch bar,lights etc there should still be sufficient air flow. Things like the small plastic guard at the front below your radiator and the rubber curtains inside you guards all play a factor in the air flow. These should try to be kept in good condition.