"Screw" The PSD - How do you defeat it?
03-04-2012, 12:53 AM
#16
Rennlist
Basic Site Sponsor
Basic Site Sponsor
Running it as an open diff is no big deal really. Many 928s are open diff, many of those with factory slips are worn to the point they act like an open diff. The PSD is designed to do some neat stuff in turns but how often are they driven at the limit anyway ?? Fix it when you get tired of the warnings or plan to sell the car, until then just drive it and enjoy.
I get vehicles in, with 2-3 page lists of things that need to be fixed/other shops could not fix, all of the time. Amazing vehicles.
__________________
greg brown
714 879 9072
GregBBRD@aol.com
Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
Free consultations will no longer be available.
Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
greg brown
714 879 9072
GregBBRD@aol.com
Semi-retired, as of Feb 1, 2023.
The days of free technical advice are over.
Free consultations will no longer be available.
Will still be in the shop, isolated and exclusively working on project cars, developmental work and products, engines and transmissions.
Have fun with your 928's people!
03-04-2012, 02:13 AM
#17
Addict
Rennlist Member
Rennlist Member
SAAB 900/9000 models in the early '90s had MkII ABS pumps manufactured by ATE. These pumps build extreme pressure and there is no need for a brake booster, which leads me to believe it may function in a similar way to the 928 PSD system. The accumulator in this system looks identical to the 928 PSD one. It is also the same as the accumulator in a Buick Reatta (http://www.amazon.com/ACDelco-255283.../dp/B000C9LTRC). It may be possible to use parts from the SAAB assembly in the 928 PSD system. You can find used pumps in self-pull salvage yards for $30.
Dan
'91 928GT S/C
475hp/460lb.ft
Dan
'91 928GT S/C
475hp/460lb.ftI suspect that the ABS pumps probably provide a higher pressure and greater flow. EDIT not that this matters as the switch will turn off the pump at the required pressure.
