I understand there are 3 different sizes of intercoolers… the standard one, the Cup 255/260 and the GT3…in order of size. Maybe you’re confusing them…or you got cheated…
There isn’t much difference in the size… you’d have to measure it to know which one you’ve got. There is only a couple cm difference and I think the height is the same. Next time you see one, measure the length, width and height of the core.
My 260 spec Sprint has a huge intercooler fitted by L OTUS during the upgrade…Lotus is good at using whatever bits ore in the parts bin at time of upgrade…I,bet they all differ in some way
Nevertheless its a fabulous upgrade.
Who cars about bloody intercooler size
Makes no difference to power, just how long it lasts.
NO intercooler works properly in an Exige unless it has the Seanb side pod ducting. Then a standard cooler with side cooling pisses all over any other intercooler that just uses the roof scoop
I never said it was the best all round, however in the case of the exige where airflow is the limiting factor to remove heat from the charged air, you move the cooling to where it is better placed, in the Exige it is with the other radiators in the nose of the car. Boost pipes would not work that long to run and intercooler, so you use a heat exchanger hence the charge cooler setup.
Whilst it does the best job of giving consist charge temps, it does have drawbacks, one is cost and the other is weight. if you can live with them and want the most power from the engine consistently, buy a good charge cooler setup, if you want cheap and less weight, use the side scoops to add as much air as possible to whatever inter cooler your car came with as the roof scoop is hopeless.
My roof scoop is now blocked off to stop it being a high speed air brake…
Weather the roof scoop is blocked off or open, it is still the same frontal area and therefore the same aerodynamic drag… with it working, you could argue that some of the air has been going through the scoop and therefore effectively reduces the frontal area and therefore produces less drag than with it blocked off…
You are saying that you made it better with the roof scoop closed off when in fact you’ve made it worse aerodynamically.
If you’re not using the roof scoop, then take it off…then you will have improved the aerodynamics of the car.
If the scoop was a straight through hole, no change in shape, direction, cross section, good exit, I’d agree. But it’s far from it, it narrows/shallows quite well across the roof area, then suddenly drops to a tiny cross section inside the rear clamshell with a big sudden step, does 2 tight turns, goes back to an even larger cross section than the air intake in the roof and spills the air into the engine bay, which struggles to exhaust the air out through the engine cover at the best of times, and then hits the front face of chargecooler casing - in Ade’s case at least. It’s pretty much worse case really.
If you want to have a laugh, put an airspeed gauge in front and behind your intercooler and go do some speed. Put it in various places across the core, and see what the speed of the air going through your intercooler is.
No one really knows what’s fully going on around the engine bay of an Exige, except maybe Lotus and they’re not sharing.
Lols on the F1 comment. Why are we using 4 cylinder road car engines from a Japanese warm hatch with an air pump on? Because we don’t have the budget to put £200k of bespoke engine and £60k of bespoke cooling kit on our cars.