Dlaitini

Rear Mounted Radiator | The Real JDM - Interactive

has anyone done anything like this?

I think it would be track car material only because its basicly trashing all truck space we already lack, but where would you source fresh air from?

Add a duct just aft the doors on each side to funnel air back there?

The supra seems to replaced the rear quater windows with ducts (seems kinda small to me, maybe high speed air coming in, will slow down as area becomes bigger to allow it to trasfer heat more efficently?)
Maybe even have flat bottom till that point where it acts like defuser to funnel air from under car into the radiator? (need some mesh to protect from road debris)

Could probobly have quite a bit of air exit if you punch holes in the area between the tail lights (that panel will most likely break anyway)

Could this allow you to seal off the front more, or redo the route for an intercooler too

Not sure how much air flow the engine bay itself needs?

Our frame rails i think would allow us to route the tubes for this beside them i think somewhat easy, maybe even an electric water pump, mounted in the back, easy access and cooler so less wear and tear on it?

Any other thoughts?

Braineack

iTrader: (62)

I'm trying to figure out why/how this makes any sense...

hustler

iTrader: (6)

That **** and the car are mad dumb, son.

inferno94

iTrader: (2)

Seems kind of odd, why not have the rad tilted forward with undercar ducting feeding it (maybe the mini window ducts as well if necessary).

I suppose they must be shedding tons of heat off their intercooler(s) thus no front mount rad can cool the engine?

I've only seen rear mount rads on rear engine vehicles, mostly race cars / FSAE. I imagine they need a replacement electric water pump to handle the long journey the coolant goes on.

Dlaitini

i thought the ALMS corvettes this year were running rear mounted radiators as well?

Could have sworn that the fan for it is mounted in plain sight in the rear, looked wierd to see it spinning on videos, does that strobe light thing like wheels do where they appear to spin backwards or really slowly

Full_Tilt_Boogie

iTrader: (1)

The only reason it would make any sense would be to reeeally optimize intercooling
and to move weight to the rear (but also adds more weight due to plumbing)

so like, drag car. only.

Full_Tilt_Boogie

iTrader: (1)

^this.

the fact that it has a window tells you a lot obout the car.
All show, no go. Wasteful existence.

Dlaitini

and also seems to be popular for rallycross cars, but its more for duribility with how they get all banged up too

Sparetire

Also good in racing where you might bump people a bit. Its easier to protect a radiator at the rear than at the front in the evnt of a minor crash *usually*.

Getting airflow would not be too hard. You could run it from under the car, though what you are doing might then create a situation where you have air rushing to fill the low pressure area right under your doors. Might create a ton of drag as a result. Running it off the area just in front of the wheels might work I guess. I think that tends to have a lot of pressure buildup and drag already. This might relieve it and help to fill void space out back for reduced drag?

Lots of work, not much benefit. If you want to do something weird and cool, do an inverted shock setup or a VVT controller.

NA6C-Guy

iTrader: (1)

Where do we have room to mount a radiator in the rear unless you cut a hole in the trunk floor and duct it.

Sparetire

That could work. I was thinking about where a good diffuser would go. You would have to do a different muffler and all.

thagr81 us

iTrader: (5)

But.... Where do you put the fuel cell then? I'm with hustler, mad dumb yo.

Bryce

iTrader: (24)

It's a good thing Hyper isn't here...

Sparetire

Shut it *******, his re-route has provisions for this already taken care of. If he were there would be no question how to go about this!

18psi

iTrader: (76)

hai guyths I want to mount a radiator up my ***. do you guys think its a good idea?

fmowry

iTrader: (8)

How is airflow in that region?

hustler

iTrader: (6)

Thats a rear-end gear oil cooler.

gospeed81

iTrader: (51)

Top Secret will challenge to the World




OMG I want these 5min of my life back.

ZX-Tex

iTrader: (15)

That is a scheme I have been considering if it turns out I need diff cooling and/or trans cooling. To me it makes sense for either. The proximity is much more favorable, and the lines can be much smaller diameter and thus easier to route.

I am not sure about the benefit of the rear mount location for a radiator. Sure there are some potential pros here but do they outweigh the cons as described above? Routing large piping and hoses? Plus I think it would be relatively difficult, and potentially a big source of drag, to get a Miata chassis to flow enough air through the trunk to cool a radiator properly:
- If you blow down, then you are forcing air under the chassis. Bad.
- If you are pulling air out from under the car, that is good, as long as there is enough flow potential there, and the differential pressure is helping. But if you have good aero, there should be LOW pressure under the car, and HIGH pressure above it, which is not favorable for that airflow scheme. Bad. It's been done on other cars of course but you need a LOT of fan power. Sucker cars anyone?
- You could perhaps pull air out from above the trunk (or the cab) and force it into the trunk, and blow out of the back of the car, with the radiator parallel to the trunk (needs bracketing and ducting to work properly) or parallel to the back panel (radiator has to be very wide and short and/or tilted with bracketing and ducting).

As far as the protection from impact, as I understand it, for a HPDE/TT car there should not be much need for radiator protection if any.

ZX-Tex

iTrader: (15)

Depends on what you ate for lunch