covering intercooler

Stopping air flow to the intercooler will have no affect when doing a water crossing at all

The role of the intercooler is to cool the air after it has left the turbo & this makes it denser & increases the engine power slightly

Looking at the photo you have a turbo intercooled prado

The hilux turbo uses a non intercooled version of this same engine

As long as you are not covering the actual air intake to the engine air cleaner you will have no problems

Regards Don

I Disagree!

It should make a HUGE difference! You now have a water/air/air intercooler!

Huge improvement in power output. Only problem is you had to drop your truck into the creek to do obtain the advantage!

To be serious, the only problem you have with dunking the intercooler into lots of water relates to if it will withstand the tempurature change and not crack! Intercooler units are made up from 1mm and .5mm thick aluminium that don't usually like sudden tempurature changes.

My Nissan unit cracked at the seal, probably due to it being drowned a few times (ZD-30 Turbo) in rather large creeks. The truck would plough through, with the water going over the blind and into the intercooler opening on the top of the bonnet.

my line of thinking would be that if the water's deep enough to require a blind then it's probably going to make contact with your intercooler if no blind were present. This would have to be worse than any temporary air restriction.

I will quite readily stand corrected should I be wrong as I'm no expert - just offering an opinion that's all.Cheers 'n' Beers

Water on intercooler will only help with power, cooling the air more!!

Go for it!

BUt remember you should have already stopped and let car cool down as you checked the water depth

Thank you gentlemen, by the way donk, it's a nissan, even better.

regards all, Adrian.

i like terra firma, the more firma the less terra, regards, Adrian.

Ace,
most people do deep water crossings at an engine speed where turbo boost hasn't cut in. So as you are not compressing the air, it isn't heating and therefore won't be cooled by the intercooler.Bob