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tsmathers

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Everything posted by tsmathers

  1. tsmathers
    Thank you, I'll look up turbo kraft. Al Al a few more details may be helpful first, you can probably find the equivalent "kit" from other suppliers; i noticed an ad in one of the porsche mags from turbo kraft for the check valve retrofit kit and went with them but if you look for ads you can probably find others apparently the issue is the residual pressure in the turbo oil lines at shutdown starts a siphon thru the turbo bearings resulting in the oil in the intake side of the turbo which then obviously gets blown thru the entire intake system, resulting in the burnoff during the next startup. no one knows why it starts but apparently porsche added the checkvalves to the 996 which turbo kraft modified to fit the 993. not a trivial home job but doable. mine hasnt smoked a bit since i installed it and now my local mechanic installs his version of this kit on his customer cars with the same success. make sure to thoroughly clean the intake system after installation to remove the residual oil. todd
  2. tsmathers
    '97 993TT clutch pedal stiff (unboosted) after short period of engine off. assist always comes right up immediately after engine startup earlier replacement of pressure accumulator (reservoir) solved problem....for a while I am now faced with having to replace the clutch pedal booster pressure accumulator/reservoir the second time. Does anyone have access to a DIY procedure for this along with recommendations for checking the pressure pump side to confirm this is a reservoir problem and not a pump over pressure problem. thx
  3. tsmathers
    I had exactly the same problem on my 97TT. replacement oil lines and even rebuilt turbos wont fix. dealers all dumb as stones. final fix was to add the turbo oil line check valves to the turbo oil inlets. apparently, porsche did this to the 997 turbo. contact turbo kraft in so cal purchase their retrofit kit mine hasnt smoked a bit since i installed it. make sure to clean out all the air lines: intercooler etc before you restart after installation or the accumulated oil will continue smoking good luck
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