Mk2 2gr supercharged

[PW@Woodsport]

So the FMW throttle sensor arrived today, a real work of art, so I made a bracket for it in the frunk right beside the power steering solenoid. I binned the Mr2 throttle cable and fitted a much shorter Celica one which reaches the throttle sensor perfectly. This design allows the Mr2 pedal to remain stock and keeps the sensor clean/dry in the front.

I connected the sensor to the ECU and the engine now revs freely , no video yet but sounds fab.

It will be quite funny watching non Mr2 owners wondering how I'm revving the engine up in the front when it isn't there, and even funnier seeing Mr2 people who know where the engine is trying to work out why I'm revving it from the frunk....hey I'm easily amused.

Quick pics of the sensor/cable fitted.





I'm going to make a shield for this to prevent accidental throttle activating.

[PW@Woodsport]

Time to crank this project up a little, it's already pretty cool but let's install a set of Evora clocks and get every warning light and gauge working as it would do in the Lotus.

[aussieGT]

Time to crank this project up a little, it's already pretty cool but let's install a set of Evora clocks and get every warning light and gauge working as it would do in the Lotus.

Image Replaced With URL For Quote http://url.photobucket.com/albums/v624/ ... uuzpve.jpg

Oooh, thats noice.

[PW@Woodsport]

At this rate, in about a years time, i'll be announcing i fitted an Mr2 part to my Evora

[ashley]

Awesome progress- really enjoying this

One question- how come you opted for a cable on the back of the throttle pedal, and a sensor in the frunk? Could you use a bolt in throttle pedal and sensor in the cabin instead...sommit like the avensis pedal combined with the existing pedal- easy stuff for a man with your fabrication skills! (And thanks again for pointing me at the Avensis pedals )




Just a thought....

[PW@Woodsport]

Hi Ashley, the reason is that no Toyota DBW pedal is compatible with the Lotus ECU, only a pedal from a Vauxhall model was going to work, but it was a big plastic piece of crap and I just didn't like it (sometimes Lotus use parts from other cars that make you wince with pain!).

So the Honda remote sensor is a quality item, signals correctly and allows the stock Mr2 pedal to remain exactly how it was, just change the cable to a short Celica one and it's done.

[ashley]

Ah- ok makes sense, strange that the Lotus ECU is so fussy!!

[2mad]

Looks super neat .. yeah reving the engine with no cable to the throttle-body would make me smile too

[PW@Woodsport]

Thanks!

So i've also installed an Aquamist FIA2 WI system as well, and set that to activate at 4psi, it's a neat setup that T's into the fuel injector signal, so copies the duty rate for the WI, not strictly needed on this engine but lowering intake temps is never a bad thing.

[EarL]

So looking forward to seeing and hearing this when it's finished.

Are you going to be offering this as a package in the future Paul?

[PW@Woodsport]

Thanks Earl, sadly i think it will be a bit of a one off, we can get 2gr engines easily, but the superchargers are not easy to get hold of, but everything else is repeatable.

[2mad]

Thanks!

So i've also installed an Aquamist FIA2 WI system as well, and set that to activate at 4psi, it's a neat setup that T's into the fuel injector signal, so copies the duty rate for the WI, not strictly needed on this engine but lowering intake temps is never a bad thing.

I LOVE water/meth on builds (great tuning tool) .. question .. what jet size .. are to spraying pre or post supercharger .

And whats your superchargers peek boost ..


Sorry for being nosey

[PW@Woodsport]

The calculations are pretty vague for jet sizing, you just have to hit a "band" where it will be acceptable.

They say add up your injector CC, all 6, then if you're running pure water divide by 10% and also 15%, (50/50 meth mix is 15%-20%) , that gives you a new CC, then there is a lookup table where you subtract peak boost and it should fall on the jet you need, in my case it is the red 0.7 jet.

This is the lookup chart...



I think the SC peaks at 5.5psi on the Evora S, it might be more, information on that is sketchy at best.

I'm spraying pre supercharger on the intake pipe just before the throttle body.

[2mad]

Sounds good mate .. i was hopeing to start a debate but i cant argue with what you have planned.i was going to suggest pre supercharger injection or maybe directly in to the supercharger to keep things cool ... aslong as it doesn't bog down when it starts spraying and keep heat soak at bay its doing what it should.

Are you thinking of uping the boost ?

[PW@Woodsport]

Yeah i am pre charger with the WI, the air path is like this...

Filter/MAF/Intake pipe/WI jet/Throttle body/Supercharger/Engine.

So it not only cools down the intake charge but also the SC rotors themselves and the boosted charge.

The boost cannot be increased unless i fit a bigger crank pulley or a smaller SC pulley, i could maybe get 1psi more out of it, not really worth the effort. In the long term i will get the SC from the Evora 400.

[2mad]

Sounds exactly like what id do .. top tip when i set mine up i ran the iat between the w/m jet and the throttle-body that way the hks and stock ecu's always new the intake charge temp and that it was low .. just a thought .. very impressive stuff Paul

Edit .. if the iat is before the jet the ecu will have no clue conditions are better .. obliviously the knock sensor will come in to play with w/m spraying but id like the low temps to come in to it too .

[PW@Woodsport]

More progress on the Evora.... sorry i mean Mr2

Fitted an Ebay aluminium shroud/fan kit, the quality looks ok to be honest, nothing spectacular.



Then it was time to see how well the Evora cluster would fit, and it sits inside the Mr2 binnacle very well indeed, this is such a cool mod, i love it and it will come with a load of features the originals never had.

Downside is i have about 30 circuits to connect and it's going to take hours to modify my dash plastics so that this looks OEM, but it will







Quickly supplied power to the unit just to check it all works...

https://youtu.be/jdXr9KrvQR8

It's obviously throwing a fit right now because there are no inputs or CANbus connected yet.

[PW@Woodsport]

Right, Marc (Gouky) is making me a box of tricks to send the correct CANbus message to knock out the ABS and TC comms errors and also to get the speedo working, he is also working on the same unit on his car, so i updated him with a video of where i was up to, it will give you a little insight into what we are doing and how good this thing looks.

https://youtu.be/x5RvEym4ZWc

[bishop]

looks very smart, can I ask what is the backbone for this box of tricks? is a standard Dev board of some description, FPGA or a Custom Board?
I was looking a while back at trying to emulate Toyota's early MPX using microcontrollers but had issues with data rates (clock restrictions).

[PW@Woodsport]

I wish i could help you, the cluster itself is made by Pektron, that is all i know, we're just feeding it with the CANbus signals from the Evora ECU and other basic inputs.