Intercooler question

[Sweeper]

The link http://www.2bennett.com/body_intercoolers.html

The first intercooler this one:


I have the simmilar application on my 3B. Maybe it's better to change for left in right out standart intercooler ? In term of cooling.

Thanks,
Vadim.

[WabTheKing]

standard aby intercooler for sale with cross member on ebay last time i looked it was at £35

[Sweeper]

Wab: It's ok i have a spare rs2 IC. The problem is if it's better to put rs2 or left this type.

[S2 Ant]

Spare RS2 IC

[WabTheKing]

Wab: It's ok i have a spare rs2 IC. The problem is if it's better to put rs2 or left this type.

good queston honest answer duno, another queston do you want to sell your RS2 intercooler if so how much?

[WabTheKing]

put hair dryer on one end and feel which one warmer at the other end

[Greg_S]

Wab, it was probably my ABY IC you saw on ebay. Put it on there earlier this week.

Greg

[WabTheKing]

Wab, it was probably my ABY IC you saw on ebay. Put it on there earlier this week.

Greg

ahh do you have a pair of wings? mine are goin rusty and its being resprayed in a couple of weeks so dont want the rust to come through and dont like boggin stuff

[Sweeper]

s2 ant: you would be suprised how much i have in my garage :-). Sometimes I'm selling something but not often.

web: no i don't want sell it.

First I need to know what to choose , or go to custom made cells/flanges big *** intercooler.

[martinjs]

I have the simmilar application on my 3B. Maybe it's better to change for left in right out standart intercooler ? In term of cooling.

Thanks,
Vadim.

sweeper, it depends on how that one is made, if it has a solid bar running partial way down the middle of the i/c so the air has to go to one end of it then back. what are the core sizes?

martin

[Pisobiker]

Vadim,
as Martin says, it's important to know core dimensions, and actually, something not showed in the picture, its thickness.
As a matter of fact, looking at it's dimensions compared to BOV and pipe, it doesn't seem much bigger than a RS2 unit, while having both inlet and outlet at the same end, it means it is internally splitted in a half.
This setup equals (more or less) an IC having inlet and outlet on opposite side, with double core lenght of the one showed, but half core height. Total heat transfer might be almost the same for the two setups, but flow and efficiency does not!


Marco

[Sweeper]

Marco: So you basicly suggest that with the same core sizes , left in right out application is more efficents as air has less problem to reach the IM right ?

Vadim.

[Stick Insect]

Marco: So you basicly suggest that with the same core sizes , left in right out application is more efficents as air has less problem to reach the IM right ?

Vadim.

Vadim, think of it as an exhaust pipe, would you like a long thin exhaust which doubles back on itself or a big bore exhaust which is short and straight.?

That is why the short quattro had the Inlet manifold on the other side from the exhaust. to cut down the path length and the turbo lag.


HTH

David

[Pisobiker]

Heat absorbtion of a core is affected by two main factors (given all other parameters the same, such as tube design and dimensions etc.):

1) lenght and capacity of exchange duct (bar or tube);
2) speed of flow.

Theoretically this means you can have about same heat transfer if core exchange area (frontal area) and thickness is the same, no matter if you have a very slim but long core, or a very tall and short one.

Practically it doesn't work exactly this way, though. Flow capabilityes of a core are very important:

you don't want a too big charge flow area not to slow it down too much, loosing energy and building up turbulances while reaccelerating it on the outlet.
But you don't want too small charge flow area as well, because this way you're forcing it to increase speed too much, while drag forces increase with the square of speed, lowering IC efficiency accordingly.

If I remember correctly OEM S2/RS2 units are 22 cm tall and 62mm thick.
Personally I would never go for a core having less than OEM S2/RS2 charge flow area (which can roughly be measuerd as the product of height x widht of end tank), preferibly something bigger in very high boost applications.
So, in the case of IC showed on your picture, a rough flowing rate comparison with the RS2 one is its thickness x half of its height.


Marco

[Sweeper]

Got some dimensions today , will post pics later :

core 66cm X 20cm X 5,5cm. It's welded in the center(black line) so the air forced to go trought intercooler to the right , then U turn then back to the left and to the IM.

Any ideas ?