My Winter Project

[grinder]

must admit - it does sounds a cool toy dave

[Brett]

How is the adjustment made?  Is it free rotating switch on top of the strut thats simply moving a roary valve inside? (ie can you spin the selecter without needing to reverse it?)

 Are you going to have a closed loop system so that you know what each pairing is set to?

[Prof]

How is the adjustment made? Is it free rotating switch on top of the strut thats simply moving a roary valve inside? (ie can you spin the selecter without needing to reverse it?)
 
Are you going to have a closed loop system so that you know what each pairing is set to?

Arh - these things might be secret...
 
 
.... no serioulsy the rotary switch is just a quadrature encoder - so in simple english it\'s just a pair of switches that turn on and off 90 degrees out of phase depending on which direction you turn it in.  Push it and a 3rd switch operates.  For those with a Greddy boost controller you will be familiar with the control.  This will be read by a little microcontroller (I am going to cheat and use someone elses code - as there is no point reinventing the wheel), which will use the number of pulses to rotate the stepper motors - and hence stiffen / loosen the shocks.  In order to first calibrate it, I will probably have to back the shocks right off to one end or the other, and then the number of turns available can be entered as a one time parameter to set the thing up.  Then the control is simple operated to adjust the suspension as required.  For Koni\'s I believe it\'s 15 turns for full adjustment.  The stepper motors usually work in increments of 0.9, 1.8 or 7.5 degrees, so (shock turns) x 360 / (step angle) is the number of steps lock to lock as it were.  Once you reach either limit the control will not adjust any more in that direction.  The values can be displayed on an LCD as \'stiffness\' or as a bargraph or something.  Unit will remember the settings when it\'s off, so there is no need for a feedback sensor.
 
So that\'s the plan really.

[Brett]

Cool

Whens it going to be ready?

Are you going o have the car at the old skool meet?

[Prof]

Yep - coming to the old school meet - won\'t have the suspension gizmo on - that might be ready for Rotorstock, but there\'s a lot to do on the car before I put that on.
 
I am hoping to get the wideband on - but looking at the weather - that\'s a bit hopeful.  It isn\'t too many wires, so should not be an overly long job to do.  I need to get that and the eManage on (long job !!) so I can start data logging it and see if/where it\'s lean and so on, plus intake temps etc.
 
See you guys at Era\'s !

[Prof]

Well, I know it\'s not winter anymore, but I fancied working on the car after helping the missus with her BOV\'s Friday/Saturday.
 
So checked my BOV - it doesn\'t seem to be making the noises it should - but the piston is ok, and the vac lines too - otherwise the boost gauge and controller would be all over the shop.
 
That done, I decided to tidy up the air intake a bit, as I still have some pipes that belong to Rotechnicks, and I figured I could get my stuff to fit in there. I have also been having some lumpy idle from time to time, and a suspect area for an air leak was where the crank case return pipe was fed through a hole in the silicon sleeving attached to the turbo.
 
Off came all the intake, and installed a straight through 3" section, 1 45 degree bend attaching the system to the turbo and the then the hose coupler to the MAF and HKS mushroom. The mushroom now sits quite a bit higher, and is much closer to the intake feed across the top of the rad - hopefully bringing cooler air in.
 
I have attached some piccies - 2nd shot shows the old dog leg arrangment - compare with piccy 1 a single gentle bend :

[Prof]

Also a few shots of other bits happening in the car - there is the LC-1 and it\'s lambda - downpipe now looking like a porcupine, as it has the original lambda still in and working too !
 
The wiring is ready for the eManage, but I have used the second analog feed to drive the original A/F meter - which now shows a much more meaningful reading of A/F - none of that bouncing back and forward lark.
 
2 Meter shots showing the Lambda sensor reading at warm up, and then the reading with the motor off (suprise suprise - it\'s very lean and so it should be)  Gauge runs from Blue (lean like air) to Red (for rich), going through cyan, green yellowish green, yellow, orange and then finally red.
 
Finally a shot of the Profec boost controller, showing under dash mounting - excuse the untidy wires - I haven\'t cable tidied them yet.

[88GT-R]

Hi Prof, your positioning of the Lambda probe is too close to the turbo. The bosch sensor last longer about 3 foot further down. Coming along nicely though!

John

[Prof]

Hi Prof, your positioning of the Lambda probe is too close to the turbo. The bosch sensor last longer about 3 foot further down. Coming along nicely though!
 
John

I was worried about that a bit, but the temps at that point in the exhaust are within spec, and a few other folks running these have them about a foot from the Turbo - the picture is a little deceptive - the sensor is quite a way down the header - about 16" I think.  It\'s not thrown up any error codes yet on the LC-1 so let\'s see how long it lasts there.
 
Next job is wiring the eManage in

[prisspringle]

wow looks like things are going rather well,good luck with mapping and more boost.

chris

[strange_days_uk]

Prof when are you gonnna have power figures ?

Congrats on all the work sure it will pay off well for you..

[Prof]

Prof when are you gonnna have power figures ?
 
Congrats on all the work sure it will pay off well for you..

Hopefully getting a dyno run at Surrey Rolling road in the next 2 weeks before the bigger injectors and tuning of eManage are done, so I can get power curves for 2 runs - without boost controller and then one with \'lo\' boost.  This will give me some idea of what the street ported engine and larger turbo are doing for the car - sort of a base benchmark.

[Prof]

ok - been doing a bit of ally sheet fabbing - cheap and cheerful I\'m afraid.  Made a bracket carrier for the ultimate, which is going to live next door to the old ECU - 2 pics one shows approximate location of the eManage unit, the other shows the bracket on it\'s own.
 
Then one last bit of ally work was a small bracket to carry the GM 3 BAR MAP sensor and a fuse box and relay box for the electric rad fan and water injection.
 
Soon will come the daunting task of splicing the loom - which from the looks of it has been done a few times already (and not all by me neither :Nono! )

[mpk490p]

Prof,
just found this thread i know we had a chat at Ace but wow you have been busy, nice to see the project coming along, i\'m still waiting for Tokcio shock mounts for Mine (another 3 weeks!) it been a knighmare having it sat in the garage with the nice weather, had to move it yesterday to do a garage tidy, after charging the battery the night before (shes been sat for about 4 weeks already) started first time which was nice drove it 15 foot out of the garage let her warm up ok sorted the garage and moved her back!!
im rebooked at WGT for the 11th May which should give me enough time to fit the mounts
keep up the good work im sure you will reach that 300BHP fiquire

Mark

[colin5524]

I have the electronic adjustable shocks on mine if you need pics etc.