Pixtures of 240R Exige motor

[Prolene]

Originally Posted by OneFastLotus

... Also, what sort of ECU changes are we looking at? Simple as a rising rate FPR or more?

The Exige 240R ecu will be able to control the bypass valve and a fifth injector located downstream of the intercooler to add additional fuel flow under hard acceleration or high speed driving. The high cams will come on at 4K rpm, so much more torque way across the rpm band. Elise cam change is between 5800 and 6200 rpm.

[_JD_]

One Fast- I thought you were going to build you own- plans change?

[OneFastLotus]

Nope. You're the second person to say that recently too. I recall several people here asked me to put together a turbo kit way back in the day,and I think several people at Lotus knew I had the 400hp miata and played with the Rx7's too and sent several people to me to ask about FI but I never had real plans to design anything.

Im old now, and have a house renovation and other silly things like that to worry about. I do still have my contacts however, from my older projects and would be open to working with them hint hint

Im open to working with someone on a kit, but I shant be doing it myself.

[OneFastLotus]

Originally Posted by Prolene

The Exige 240R ecu will be able to control the bypass valve and a fifth injector located downstream of the intercooler to add additional fuel flow under hard acceleration or high speed driving. The high cams will come on at 4K rpm, so much more torque way across the rpm band. Elise cam change is between 5800 and 6200 rpm.

Gotcha.

[BrettP]

Originally Posted by scottyb

Hey Stan,

What's your take on this?

That's how we ran our intercooler set up, in the intake area of the car. Works very well with intercooler temps at ambient under boost.

[Arno]

Originally Posted by 1FASTMX5

Not likely since the SC would not be able to provide enough boost to compensate for the pressure drop over such a long run. Maybe possible in a Turbo application if you could find room for it.

Answer: Chargecooler

Liquid circuit to the front with extra radiator (or dump the A/C and re-use the condensor.. ) and pump+chargecooler unit in the back.

Look up for more info: Esprit Turbo

Chargecoolers are already used on VX220/Speedster turbo's that are tuned as the air-air intercooler mounted in the back simply can't get enough airflow across it to get sustained cooling and thus constant power output.

Things are very different between when doing short 'sprints' or driving such a car at full throttle at the german autobahn for 30 minutes straight or on a grand-prix type circuit with lots of full throttle.

The chargecooler setup keeps working in the last situations just fine, but the air-air intercooler at the back just doesn't cut it anymore and intake temperatures go sky-high (with the resulting power dropoff).

Bye, Arno.

[MotorCade]

Just thinking 'out loud' here... but shouldn't it be possible to order all the parts from Lotus once the Exige sport 240 is released? I mean... they'll bolt right up to our cars, I'm thinking that even the new ecu will have a part number. Anyone else think it may be possible to order the supercharger and associated hardware via Lotus and bolt it up with just mods to the intercooler piping? Or am I missing something?

Cade

[NMRJock]

Originally Posted by MotorCade

Just thinking 'out loud' here... but shouldn't it be possible to order all the parts from Lotus once the Exige sport 240 is released? I mean... they'll bolt right up to our cars, I'm thinking that even the new ecu will have a part number. Anyone else think it may be possible to order the supercharger and associated hardware via Lotus and bolt it up with just mods to the intercooler piping? Or am I missing something?

Cade

Probably. If you are lucky you could source the supercharger somewhere else (like wherever Lotus is buying them) and avoid the markup on that. You'd just have to pay Lotus for the hardware that mounts it up and the ECU.

[MotorCade]

Wanted to add... all it needs is a lower compression set of pistons and a smaller pulley...

[Ruediger]

The main advantage Lotus have:

They can use “their “ EFI- ECU because they know the code needed to remap it.

There are so many IT-specialists in this board and some of them may even be talented hackers. Give it a try please. I know that it can be done.

[Ruediger]

Originally Posted by Arno

Answer: Chargecooler

Liquid circuit to the front with extra radiator (or dump the A/C and re-use the condensor.. ) and pump+chargecooler unit in the back.

Look up for more info: Esprit Turbo--

Bye, Arno.

Arno you forgot to mention Turbo Technics in UK ( http://www.turbotechnics.com ) who are offering a centrifugal SC kit for the S1 - Elise /Exige.
I do not like their air pump but their additional charge air cooling system. But you need the space to arrange it. And these guys over there have a AC system and the twin oil coolers at the nose of their fat Elise already.

The additional components add additional weight, too.

Ruediger

[charliex]

Ruediger, its my next project i just got my elan setup with a realtime engine monitor/ecu adjustment for the dyno, i can reprogram it completely ,and on the fly from a laptop as its running on the dyno, even driving along the road if i was nuts, the emulator should be able to handle the elise ecu too.

m100 is a much more accessible ecu since its a gm memcal ecu, but ecu's are very basic devices ,quite primitive as computers go, so i hope to get into it quickly.

once i've got it setup the way i want it (another elan owner in the uk did all the hard work of figuring out the mappings, my car is heavily modded though so i want to customize it as well as the realtime monitoring and logging)

the designer of the elise mentioned that the ecu mappings would be password protected, which is common these days, so that will be interesting, it'd be great to find a mechanic that'd let me snoop the diag, but i bet lotus would be pee'd about that. i've started collecting what info i can in preparation, i've heard owners in the uk have already done some work on it.

cheers,
h4x0r

[Ruediger]

Originally Posted by charliex

----
the designer of the elise mentioned that the ecu mappings would be password protected, which is common these days, so that will be interesting,---)

That’s true. But if it would be a Bosch- ECU it would be easy to remap it.

At the last Motorshow here in Essen I spoke to several tuners who solved the problem with Bosch- ECUs and also Bosch tried to prevent this.

Good luck to you. It’s an interesting task / occupation for the cold season and perhaps you will find others to help you.

Ruediger

[sleepless]

Originally Posted by Arno

Answer: Chargecooler

Liquid circuit to the front with extra radiator (or dump the A/C and re-use the condensor.. ) and pump+chargecooler unit in the back.

Reusing the A/C core is a great idea. The pump is already there too and you get the electric fans... No extra weight... Hmmm...

Forcedfed should have this as an option; I seriously doubt that little intercooler and fan are enough for track driving in hot weather to cool the intake sufficiently.

I have this setup on my M3 (they call it an aftercoolr rather than a chargecooler) and it works very well.

[Prolene]

Since AC is standard on the 240R, it seems like it would be an 'easy' conversion. The existing AC hoses to the condenser can be used to route the water. Bypassing the evaporater might have to be done, and an inline pump would have to be added. Replace air to air with the liquid jacketed unit, and good to go. Also jury rig switch to the condenser fans.

[BrettP]

Originally Posted by sleepless

Reusing the A/C core is a great idea. The pump is already there too and you get the electric fans... No extra weight... Hmmm...

Forcedfed should have this as an option; I seriously doubt that little intercooler and fan are enough for track driving in hot weather to cool the intake sufficiently.

I have this setup on my M3 (they call it an aftercoolr rather than a chargecooler) and it works very well.

You would be mistaken about our intercooler's efficiency and it's ability to cool the charge to near ambient.

[sleepless]

Originally Posted by Forcedfed

You would be mistaken about our intercooler's efficiency and it's ability to cool the charge to near ambient.

Have you done testing in 100+ degree weather for a 30 minute full throttle track lapping test?

[BrettP]

Originally Posted by sleepless

Have you done testing in 100+ degree weather for a 30 minute full throttle track lapping test?

We have done static, heat soaking on dyno pulls to simulate hot weather testing on the car. With air temps in the dyno room at 74 F and the intercooler at 125 F under heat soak conditions (running the car for 30 minutes at load) we have simulated a hot day. Going to WOT and full boost drops the intercooler charge temp back down to 79 F instantly. This is without any fans directing air to the intercooler, and with our puller fan turned off. In other words the most extreme conditions the car will see as it is stationary under load without air flow to the intercooler or motor. We will be testing our set up at the track and monitoring intake, intercooler and egt temps shortly to ensure that our package will be durable for track days.

[sleepless]

Originally Posted by Forcedfed

We have done static, heat soaking on dyno pulls to simulate hot weather testing on the car. With air temps in the dyno room at 74 F and the intercooler at 125 F under heat soak conditions (running the car for 30 minutes at load) we have simulated a hot day. Going to WOT and full boost drops the intercooler charge temp back down to 79 F instantly. This is without any fans directing air to the intercooler, and with our puller fan turned off. In other words the most extreme conditions the car will see as it is stationary under load without air flow to the intercooler or motor. We will be testing our set up at the track and monitoring intake, intercooler and egt temps shortly to ensure that our package will be durable for track days.

I look forward to your real world track testing result. From experience, I don't trust static tests.

[shay2nak]

Originally Posted by MotorCade

Just thinking 'out loud' here... but shouldn't it be possible to order all the parts from Lotus once the Exige sport 240 is released? I mean... they'll bolt right up to our cars, I'm thinking that even the new ecu will have a part number. Anyone else think it may be possible to order the supercharger and associated hardware via Lotus and bolt it up with just mods to the intercooler piping? Or am I missing something?

Cade

I think to get the parts you'd have to prove that you own a 240R. I heard that BMW wouldn't sell anyone M3 CSL parts unless you could prove you owned one.