riddler777

does anyone know how to get rid of that damn PSD,
and make the LSD work all the time at least on 40~60% Lock

i'm not interested in track times, more interested in powerslides, and it constantly interferes, few times had almost a crash because of it

is it possible to make it think or to create a switch to set in lets say 40~60% lock or something like that, so that it doesnt switch on/of when it thinks its right

hate that s##t

it ruins the whole car

Marine Blue

Buy an older 928 with LSD or some American Muscle......

Jadz928

^^^^^^Classic great RL advice.

goodspeed928

^^^^^^^^^^^^^^^^^^^^^^^^
BUY A FORD GT

AO

You can remove the PSD slave cylinder and replace it with a bolt. But I don't recommend this becasue then you'll always be locked at whatever % you set it and can casue other problems. You could also unplug it, but then you get no lock.

However, that said, I've never had issues with my PSD for powerslides or other driving.

When was the last time you serviced your PSD?

Marine Blue

You're right Jim, my post wasn't very productive or well thought.

I guess I was put off with the use of four letter words describing a feature in the car which appears to work as intended.

The PSD is amazing at keeping the rear of the car planted and it does a very good job of controlling the traction at the rear. My 87 with LSD on the other hand was very easy to break loose and I could kick out the rear whenever I wanted. I'm sure some of this had to do with the older tires on the car which probably lost their pliability.

Maybe trying lesser tires would help the OP.

jcorenman

+1, the PSD on our GT does a great job. And so does the LSD on the S4, but I prefer the PSD.
Of course my preference has always been traction over no-traction so maybe I am missing something here...

Lizard928

I found that if the car starts to slide with a PSD car the PSD deactivates and lets the inside tire fire.

I believe that this is what the OP is talking about. I would pull the slave and replace it with a bolt and set it at around 40%

Tom. M

OK..this begs the question.. how do you know how much the LSD is set at? I've got a GT PSD tranny that will be going into the track car. I will use the bolt method to lock the psd but was wondering how much it should be screwed in?

On another thought...would there be a way to set up a slave cylinder to a manual lever that could be locked at various settings like 40% , 60%, and 80% slip? that would be cool... you could tailor the lsd to the track without having to climb under the car ..

Tom. M

Thinking about my post a bit more... I envision a motorcycle brake or clutch setup where the handle can be locked at various points of engagement ..or if I were daring..set up another pedal next to the clutch where I can select the slip at the push of the foot LOL..

Lizard928

To set the PSD to a specific amount lift one rear tire off the ground and see how many ft lbs it takes to turn it. Factory later ones need 15 ft lbs. I think Carl has the specs for the earlier 40% units on his website.

Lizard928

You would have to push the pedal in for increased lock. You could use an e-brake handle with a manual cylinder on it.

svp928

You can get a screw- cable with a **** and make it adjustable...

dprantl

Does anyone have a pic of the bolt in place of the slave cylinder? You know what they say about how many words a picture is worth.

Dan
'91 928GT S/C 475hp/460lb.ft

RKD in OKC

Hmmm, interesting. I've only had the PSD let the inside tire spin around a corner I was trying to power slide around boy drifter style just once. The rest of the time power oversteer has worked as expected.