thanks for letting me join the forum, ive been reading threads for a few months but not got myself registered.
Thought I would ask on here to see if anyone has an opinion on this.
Ive spoke to wayne at proalloy and he thinks it will work.
I currently run a TurboTechnics supercharged rover k series in my s1 elise, its chargecooled, but with a very small cooler.
I have an lightweight full exige body arriving in march which will give me the opportunity I hope to get rid of the chargecooler.
Ive never trusted it and now the pump has failed I want it off the car.
My plan is to run a setup similar to the s2 with a intercooler above the engine with the roof bringing the air in(proper heatshields so it wont cook ontop of the engine)
I will be using the dremel to make the inlet and outlets as big as possible
This will also get rid of the pump/front rad/pipes and water, I hope will remove 10kg of weight
My final goal is to be down to between 650-680kg due to wanting to enter time attach and wanted to do it with lighter weight rather than more power
When I spoke to Wayne about it, he said there wasnt the restrictions in airflow like the s2 had so it should be fine.
Whats peoples thoughts on this, for reference im running 10psi and making about 230bhp
Franks option is probably best …
If you really want A/A then try to fabricate a system to harness air from the side pods… imho …
And welcome here btw.
You’ll probably be told that driver training is what you really want
Well the car will pretty much only be used on track from next year so I was hoping there would be enough air.
Also its extra weight, and something else that can break, im trying simplfy my entire car while saving as much weight as possible.
[quote=jfk]Franks option is probably best …
If you really want A/A then try to fabricate a system to harness air from the side pods… imho …
And welcome here btw.
You’ll probably be told that driver training is what you really want [/quote]
I did have a read of seanb results from brunters yesterday that had me thinking alot.
Ideally like you say if you could harness air from side pods and run a 211 style system it should work, I would be happy with 37c temps
The only issue with the s1 is the small entry holes, if you add a 3" pipe each side you pretty much dictate they are only going to be used for that.
Currently I have an air filter one side and a oil cooler the other.
I theory I could put my airfilter being fed by the roof scoop, but then what do I do about my oil cooler, im not 100% sure on those water to oil cooler as all your doing if dumping that heat into the water system.
And being supercharged I imagine im going to be creating a bit heat if im flat out on track.
One thing I could do is run my intercooler at the back where the numberplate is, have that all as mesh(will be doing that anyway to get the clams as light as possible)
Have the 2 sidepods feed air directly to it, but have the oil cooler either directly below or above it so they can both vent out of the clam.
Only issue there is the long pipe run on a supercharged engine isnt great, I only have 10psi at the moment, I dont fancy loosing any more of it.
The opinion on air to air is to get the majority from the side of the car, although there should be no harm in also getting air from the roof - it just isn’t as cool as the air from the side.
10 psi @230 ?
That’s a lot of boost for that output .
I’d estimate more like 5 , but it’s only my opinion.
Running a true 10 psi will probably see intakes approaching 50 degrees rather than 37 ish …
Keep the charge cooler. You will never get enough air through an intercooler to make it work as efficiently as your charge cooler will.
In all the chats on here about different shrouds and feeding air from here, there and everywhere, the common thread has always been, if money is no object, then fit a charge cooler system.
[quote=jfk]10 psi @230 ?
That’s a lot of boost for that output .
I’d estimate more like 5 , but it’s only my opinion.
Running a true 10 psi will probably see intakes approaching 50 degrees rather than 37 ish …[/quote]
Yep, checked on emerald and put a boost gauge on to double check.
Hits 9psi at 5000rpm, 10psi at 5500rpm which it holds to 6000rpm, this lowers to 8psi by 6500rpm and 6psi by 7000rpm
People on SELOC say it might be the internal rollers slipping at the top rpm which is causing the boost to drop off, else would be on target for 15psi
The only reason im guessing that 230bhp is I know it made 210bhp at 8.5psi on stock vvc setup(its now got 270 cams) when it was mapped by Dave at Emerald back in 2005
ive got another water pump on order, just bought a cheap �10 on ebay, wasnt bothered if it only lasted a couple of hours as all I needed to do was log some temps so I had something to work on if I was going intercooler(pump died before I got my emerald cable so dont know how hot/cold air temp is)
I suppose ill see when i replace the pump(have to take the front clam off for that!!!)
As mentioned before the reason I wanted to go intercooler was simplicity and weight, spoke to olly at phoenix and hes interested in helping get it as light as possible.
i suppose I could add them either on the rear of the clam where the luggage space would normally be, or in the lid, the only issue is how well the rear airflow stays attaches to the body work as it passes over.
I would run 2 x 4" naca ducts and make a 211 shroud.
Has anyone ever seen any wind tunnel testing of the s1 exige, ive seen the s2 stuff from reverie
