Suspension, from the top of my head you should have servicable front struts, which can accept new inserts. Which could be either standard items, or upgraded Koni's, the same could be applied to the rear of the car where either standard or koni dampers could be used at good value for money.
If you want to tighten up any 944, I would recommend fitting the 968 M030 anti roll bars, as these will transform the car more than almost any suspension modification. They sometimes become "unavailable" from porsche, but usually within 6 months another batch has been made and they are available again.
Gear linkage, there are several wear points, mostly caused by the combinations of mild steel mechanisms pivoting inside plastic bushes. The mild steel items corrode, getting a surface like sandpaper, which causes excessive wear everywhere where steel meets steel or where steel meets plastic.
Going from front to back.
At the front you have a gear lever which is connected to a long rod that extends to the transmission at the rear of the car, where the two are connected you have a steel pin on the lever going through a steel eye in the rod. Sometimes you get some wear in the eye, but normally you get much more wear in the pin, which wears to become a tapered barrel shape rather than a straight pin.
At the back, you have a mechanism which has two metal pins pivoting in a cast plastic bush. In theory the two pins here should not rust, as there are 4 rubber seals which seal the plastic bush where the pins go through. Unfortunately the rubber seals shrink, the grease is lost, the metal pins corrode and the corroded surface eats the plastic bush alive.
Lastly, the left to right motion of the gear lever is stabilised at the rear by a rod with two rubber mounts, these also weaken with age and cause a much more fuzzy gear shift.
Lots of people make noise about the plastic cup on the bottom of the front gear lever being worn, but to be honest I rarely find this to be the case, but it is cheap to replace.
The options
We have an uprated front gear lever we supply, which has the standard mild steel pin removed and a stainless steel one installed. Often installing this item will remove most of the play in the setup. We sell these on an exchange basis, have done for years and have never seen one wear at all.
For the rear we use several options in the workshop. One is to stripdown of the rear assembly, cleaning up the two shafts that run through the pins, and replace the plastic bush/block with a self lubricating billet item, there are plastic ones on ebay which are cast plastic and not self lubricating, which I would not recommend. We also replace the seals at the same time, and apply light grease to the shafts when the whole lot is reassembled.
Another option for the rear we are working on at the moment, is a stainless steel version of the rear linkage, which also uses our self lubricating bush, which should last forever, it also has an adjustable cross brace which is rose jointed onto the transmission and the linkage, (rather than the standard pressed steel one with rubber bushes) which is being tested on some cars at the moment and seems to be working really well. It is not a quickshift as such, but what I would call a precision shift, it removes all slop from the gear shift, and should never need replacement. We are thinking of making these also available as a quickshift where the motion between gears will be reduced.
Lastly would be to change the rear linkage with a dedicated quickshift. for years we have been selling our RaceShift and RoadShift, which are fully made from stainless steel and billet aircraft aluminium with all joints rosejointed. These have been used in racing as well as on the road for about the last 10 years without any issues and are probably the most precise gearshift available. you could literally fit a ferrari style H-gate over the gear lever and it will track through the same pattern every time with next to no motion beyond that needed to change gear. The RoadShift has a slightly reduced throw and is no heavier than a standard gear lever to use, the RaceShift has a much reduced throw, but is heavier to use. (less motion, more effort, basic lever engineering principles)
As has already been said, if the car has been off the road at all, get the belts changed. They need to be changed every 4 years or 40,000 miles in reality.
_________________ Clean it, wax it, love it, ENJOY it... then fix it
Jon Mitchell Independent Porsche Specialists Technical Advisors to TIPEC http://www.jmgporsche.co.uk https://twitter.com/JMG_PORSCHE http://www.facebook.com/jmgporsche
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