James Bailey

probably NOT a guage feed ....VDO made all kinds of stuff for a 928 including gauges.. You need some wiring diagrams ...

RKD in OKC

I'm curious as to how you are going to increase the front wheel steering. Saw a professional drift team with a GT3 talk about preparing the car. Besides the big brake lever coming up near the shift lever they said the most difficult part of setting up the Porsche was increasing the steering. I know I've run out of lock to try to bring the rear back once it has really stepped out, which was not much by drifting standards.

James Bailey

He never said it was going to be a good drift car because the IRS is also a challenge...

CutandWeld

Lol

I've been fabricating and building cars for 15 years. I've modified steering setups for 240's, ae86's and others, this will obviously be different since I believe most of the components are aluminum...but that just makes for prettier welds

You're probably right. The black box above the fuse/relay panel is also made by VDO (whatever that box is). I am using this diagram: http://www.cannell.co.uk/_manuals/po...8_1980_cfd.pdf
but it is too difficult to read the wire labels...does anyone have a better link?

FYI, PRAY you never have to remove the air box or heater core housing...PITA!

Alan

Cruise Control Brain likely? & a relay socket for the chime

Post numbers (or just google search them)

Alan

CutandWeld

Couldn't find any numbers on them. And thanks Alan, I was waiting for you to chime in...figured you'd know.
You happen to have a link to a better wiring schematic?

CutandWeld

Alan, you were spot on.
Could you give me another hand? Do you know the wire color for the tach signal, oil pressure warning, coolant temp, and knock sensor? Gotta try to find where to tap in an oil pressure and temp sensor, knock sensor warning light, etc. Figure you seem to have the best background knowledge in all things 928 :-)
I'll get pics up soon

The Forgotten On

I did, I also rebuilt it and put it back in. I agree with you it's a huge PITA.

I would recommend swapping to a solid rear axle, it makes drifting easier as you won't have a weissach axle system adjusting itself to get you more grip.

CutandWeld

Hell no...maybe it was just the old seals, but I could get any of it to separate without nearly snapping it apart!

Straight axle is a great idea :-) Early on, I need to shake this car down, see what the weak spots are and what needs critiquing. I know, right now, the fuel system is a concern...all the houses that connect from the fuel rails to the injectors look pretty weathered.

danglerb

I think the 928 is fairly stable sideways, what it doesn't like is changing due to the high polar moment.

Maybe some differential braking in the front to help with the steering?

CutandWeld

That's something I'm looking into, front or rear hydro brake...waiting to hear from some buddies of mine and that first shakedown run.
The plan is to shorten the knuckle arm where the tre attaches and move the steering rack forward, but until I can get up under there to check on space, etc, that remains to be seen.

Alan

If you want better quality wiring diagrams you will have to buy them - contact Roger (ROG100) - not so expensive, you can't work on the car without details (it will cover all the mechanicals too - which sounds like you will also need).

Alan

spooledx2

Lol 90% of the drift cars out there run IRS. I have built a few myself. I have considered using a 928 as well, but was concerned about the rear suspension as well. The weisach part anyway. The biggest issue is the weight balance on the 928. A near 50/50 balance is great on a road course car, but most drift cars run nearer to a 70/30 ish balance to keep the rear end light so it's predictable and easy to manipulate with the throttle or e-brake to initiate and control the drift. I'm defiantly not saying it's impossible.... But if I were to do it I would modify the tunnel and use a T56 trans mounted directly to the motor, and modify the rear suspension to get rid of the "rear steer". Not sure if you have ever driven a 300ZX or a Skyline in stock form but the rear steer makes controlling your slide very unpredictable. That's why I got rid of the rear steeping rack on my R32 GTR.

Just a few thoughts anyway... Maybe pinning the rear end would make a significant difference. If you watch that video when the 928 loses it in the corner it wasn't from to much throttle, but more of a pendulum effect, from the added weight in the rear.

Ramon

Alan

On the Cruise Brain connector the tach signal is the Brown/Red wire on Pin 11.

Coolant Temp Sender:
==============
Switch: Blue/Green - sender or dash also on CE Connector P5 or G5
Sender: Blue/Yellow - sender or dash also on CE Connector P4 or G4

Oil Pressure Sender:
============
Switch: Blue/Black - sender or dash also on CE Connector P1 or G1
Sender: Blue/White - sender or dash also on CE Connector P2 or G2

No knock sensors.

Alan

danglerb

Car I loved to go sideways in was a 64 Alfa spider with that T bar located non irs rear end. Seemed like you could control the drift by wiggling your butt.