Found This On Ebay, Did They Exist?

[Konrad]

http://cgi.ebay.com.au/skyline-twin-core-i...bayphotohosting

interesting find...these would be better than a r34gtt SMIC right?

[Chris_R33GTSt]

That is pretty cool indeed... Wonder if it would be as good as an ARC smic?

[CEF11E]

thats a nice bit of kit

[Beer Baron]

too thick. you would be hard pressed to make air flow through it I think. all the air would just be flowing around it like it was a brick wall.

[Blitz]

There is no way I would fit someones backyard creation to my car.

Either use an ER34 SMIC, or buy a front mount kit.

[Munkyb0y]

apparently

This is a twin core r33 intercooler ,its a foctory option so its all epa legal.

i wasnt aware of that option either.

[Blitz]

apparently

i wasnt aware of that option either.

Thats bullshit.

[CEF11E]

it may not be factory, but i have seen one before on an R32 m spec. it was making 210rwkw. also came with the electric spoiler.

I thought it was factory.

the one i saw was exactly like the one listed but also had a shroud. it is not a backyard job. look at the end tanks and mounting hole.

Still looks the goods to me

[benl1981]

Just bought this. Hope to get about 220rwkw out of it with GCG turbo..

I'm going to flow test it first on the bench and compare it to a stock R33 and stock R34..

Hopefully it goes ok.

[paulr33]

the heat from the first core goes onto the second core

useful

[CEF11E]

overall heat transfer coefficient for a wall can be calculated as:

1 / U A = 1 / h1 A1 + dxw / k A + 1 / h2 A2 (1)

U = the overall heat transfer coefficient (W/m2K)

A = the contact area for each fluid side (m2)

k = the thermal conductivity of the material (W/mK)

h = the individual convection heat transfer coefficient for each fluid (W/m2K)

dxw = the wall thickness (m)

Aluminium Coefficiant: - 221 W/mK

When aluminium is used as a heat exchanger in ambient air medium

U = 1 / (1 / hA + dxw / k + 1 / hB) (1b)

Taking the total medium transfer to: U = 25.0 W/m2K

even if the air temp in the cores is 70deg C the total increase of air temp traveling thru the second core from the first will be nothing compared to the temp coefficant.

in other words....

it will perform very well.

[benl1981]

Well the ARC type are 110mm thick. This is 130mm (2 x 65mm) . The air flows through the fins from frotn to back - shouldn't be a real issue.

It won't be quite as good in cooling as a taller skinnier cooler but it should flow ok.

Might connect up a water spray for hot days...

Way I see it if it can handle 220rwkw I'm laughing.

Benfits:

1. easier to fit

2. looks stock

3. wont lose response like with a FMIC

3. good for insurance etc.

downside:

1.not as good cooling

[Munkyb0y]

benl1981, it'll be interesting to see what the bench tests show between these 3 smic's. make sure to keep us updated.

[benl1981]

Yeah I can borrow flow meters etc and should be able to get my hands on an air compressor..

I'll record it all.

The bloke thats selling it reckons it is a genuine Nissan item. I haven't seen them before. Maybe Nissan made a very limited run of them..

[Adriano]

Must admit it doesn't look home made, a water spray should work well with it.

[Konrad]

hmm well i had a r34smic, then upgraded to a fmic (r34 is exactly 61% bigger in core size btw) but maybe i'm not seeing things correctly but that piping (entry and exit points) doesn't really look like it will bolt up correctly to the stock 33 piping?

Maybe its a r32 one? as i recall they have a different piping setup to the 33/34

[RANDY]

I put a 34 SMIC in my car, and it pushes right up against the front bar. This thing looks like it would want to sit much further forward?

The distance from the inlet/outlet to the back of the core looks the same as my 33 and 34 cooler, so the extra thickness APPEARS to take more space at the front?

Definitely keep us updated on the flow results! I'm keen to know how much better this 34 cooler is over the 33 one, regardless of the dual-core setup.

[markimak]

that is a interesting bit of kit.. can u get the part number off it and someone run it through fast..

[Konrad]

I put a 34 SMIC in my car, and it pushes right up against the front bar. This thing looks like it would want to sit much further forward?

The distance from the inlet/outlet to the back of the core looks the same as my 33 and 34 cooler, so the extra thickness APPEARS to take more space at the front?

Definitely keep us updated on the flow results! I'm keen to know how much better this 34 cooler is over the 33 one, regardless of the dual-core setup.

cant comment on the stock bar as i've always had a aftermarket one (as pictured in my av) but i did measure back to back the cores (stock 33 vs 34) and from memory the 34 core is a couple of cm taller (so sits lower) and 2cm thicker, but no wider,so would sit a tad forward yes