minty

iTrader: (1)

So what do they gain by tilting the Intercooler on the WCR cars?

Is it the forcing of the air upwards or something similar ???



Minty.

DaveW

It gives the air a clear path through the intercooler and up through the hole in the bonnet, aids cooling.

Same as I think the radiator is angled the other way so the air passes through it and out under the car.

billythekid

IIRC they run 2 ICs? This is the secondary one you can see.

Graz

It's all carefully ducted, modelled for flow, etc. to gain the optimum cooling effect I'd have thought

Luke C

iTrader: (1)

WHAT AN ENGINE!!!!!

RayC

it actually makes the intercooler thicker in the air path.

its the same principle as amouring on tanks, if you angle the plate (say its 10mm thick) it makes the section the bullet has to pass though thicker as its going along the plate to get out the other side

with intercoolers the cooling air is in contact with the cooling fins longer

sgcooby

Think that engine needs another dozen leads and cables in there. Not.

minty

iTrader: (1)

I see they go Wallace to spin the inlet manifold around for them like he did mine

Like the safety feature on the tiny amount of intercooler hoses, they dont trust it so have a bracket bolted on too

minty

iTrader: (1)

My Favourite bit tho, through all of that Carbon Fiber, High Pressure Hoses and Air Ducting......

They have the same Oil filler Cap as me

Minty.

automodellistagt

that is very sexy

minty

iTrader: (1)

I cant see the Alarm Unit or any fused wires for his ICE install

silent running

It's a logical design if you think about how an intercooler works. The very best IC placement would be close to the front of the car but not directly in the path of flying debris etc -a boost leak through a holed IC is the last thing you want on a rally stage. The higher off the ground it can be, the better. It also needs to be close enough to the turbo and inlet manifold so that the pipe run to the IC is pretty short, defeating lag and lessening the effect of picking up heat through long runs of piping. Airflow through any IC is not just a question of forcing enough air into it and hoping for the best. More important is an extraction effect behind the IC so that any air arriving in front of it is actually pulled through and doesn't stall. Stalled air around an IC = IC not working. I've not seen the WRC bonnet up close but I'd imagine that when it comes down, it seals tight around the perimeter of the upper face of the IC. At standstill it will not pick up any heat to speak of from the engine bay or main rad, and any residual heat in it can convect upwards into open air. On the move, you have high pressure air fed in from the front grille, which is extracted through the IC by the exhaust duct in the bonnet. This works because the area just behind the front edge of the bonnet, above the headlight line, is about the only low pressure area anwhere on the front of the car. If you want to extract air from the engine bay, this is the best place to open up a hole. Anywhere further back will start to force air IN to the engine bay, hence why your fresh air vents on virtually every car take their air supply from the scuttle panel and why bonnet scoops tend to be at least half way back from the leading edge.

All in all, the actual tilt of the IC is irrelevant to its performance. That's a question of packaging really, it's just the best way that it fits aerodynamically to extract air via its bonnet exhaust duct so that the air has a relatively straight path up and out, with the added bonus that it will passively cool pretty well also. The location of the IC is excellent, it ticks all the boxes - short pipe run, cold fresh air feed from the front, out of harm's way, sealed from other heat sources, has an effective extraction system.

ru'

I don't often quote people's pictures, but to be honest...

"I want that one!"