I agree with Boothy, none of them did a great job.
My S1 turbo’d Audi at 430bhp never ever went above low 50’s EVER and normally sat in the 40’s. That was charge cooled, with a huge (5 litre) cold water reserviour, triple pass charger rad and the mother of all charge cooler pumps.
Another cooler we said we would like to try is a 211 one. We believe they are bigger. Lets not forget 211’s are only fed by 2, 4" ducts that feed from venturi’s in the top of the body.
The bottom line though is I think the MMG deal for charge coolers is going to be popular for people who want to take the next step.
I know Liam at MMG won’t like this result at all and will do some more testing himself , if the results are the same im sure he will change my and 661s intercoolers as he won’t have MMGs name on it otherwise , all the calcs say it should work but for some reason it didn’t in this test .
Just my personal opinion, but I think the charge coolers really need 2 pumps, with only one I found that the water gradually warmed through a trackday, with 2 it is always cool, I am this year going to change my setup for cooling after 100 degrees at Spa after 4 hot laps
PS I do only have a single pass radiator
[quote=SeanB]
The bottom line though is I think the MMG deal for charge coolers is going to be popular for people who want to take the next step. [/quote]
Agreed, wish I knew what I was going to do with my car otherwise I would be all over it.
Ok thinking outside the box here (or maybe in it who knows) but the OEM cooler is a small lightweight tinny thing.
With limited airflow mass will make a difference when cooling something down, the forge is more substantial than OEM but has a bigger surface area which I am guessing helps and will also allow it to flow better than OEM.
From my understanding a bar and plate cooler is heavier than tube and fin and has a greater mass, when front mounted and with forced pressurised air passing over the core it will cool down and hold that energy more efficiently than a lighter tube and fin.
However no matter how you try to increase airflow in the exige you may increase airflow but you will loose the pressure of that air in the ducts and that I am guessing will effect the cooling ability? Also you are never going to get the same effect as placing the cooler directly into the airflow like in a front mounted set up.
Those are my thoughts anyway
So I wonder how much air you can possibly get from the side ducts? I think we need a much improved set up even over the RLS one. Something with Reverie sized side pods allowing for a larger catchment area whilst still allowing engine cooling and even more ducting than JFK’s… However the question must still be can you loose another 20 degrees…
Those results are surprising,but probably not for Lotus they would have done some testing and got the same results.Hence they went for the cheaper option and saved weight.
My next plan is the bigger side pods and water spray on cooler and water injection jets on hot side of cooler.
With the new bigger Proalloy cooler with the bigger shrowd.
Hoping that will make a difference.
I would say though…,. Are we worrying to much? I couldn’t have driven my car any harder at bedford. Me and Sean were out playing for over 15 laps at bedford. Basically until we ran out of fuel ( and he got fed up of me kicking his ass badly!!) honestly did I think the car was going that much slower? Not really! I am not racing… It was just a trackday.
If the ECU’s are retarding the ignition to safe levels for the engine… Then I am not that worried as my car is staying at sub 250bhp.
If you want more power and are not racing… Go for an Audi turbo conversion and chargecooled it for not much more money and have big power with no transmission worries…
Just to confirm everything is bang on for the tests and to ensure your OBD/AIM calibrations are reading/displaying the datastream correctly do a test on Monday comparing your air temp sensor to an independent reading from a thermocouple across the scale.
If it is all correct which I guess it will be then you guys have some decent gains to be made and the race is on the the hardware suppliers to produce a decent product Air to Air wise.
[quote=polly_x]
If it is all correct which I guess it will be then you guys have some decent gains to be made and the race is on the the hardware suppliers to produce a decent product Air to Air wise. [/quote]
I don’t think its the product thats the problem, it’s more the available airflow.
Imho truly the best option would be something similar the the reverie air scoop for the roof which in order make it look right would require a new roof mold and then a new section cutting into the rear clam…
Its a ball ache but that would deliver much greater airflow and pressure.
I am still convinced the Forge gives an improvement over OEM as I have driven mine back to back various times and the engine feels much more free revving than with the stock cooler, it also takes longer to heat soke than OEM.
I’m not disputing what you say Boothy, but I have to say as far as my seat of the pants dyno goes, i didnt feel the difference in how the car drove with any of the different coolers.
