Subject: Lowering Vehicle Height Models: 911 Turbo 1989
Bulletin Number: 90 – 02
ATTENTION: Service Manager/Service Technician
911 Turbo Model Year 1989
Porsche does not approve of lowering a vehicle height. Lowering a car may constitute a violation of Federal Motor Vehicle Safety Standards as well as a violation of various state laws regarding height of lights and chassis height.
Lowering the vehicle height may also result in damage to fuel pressure line, which could cause a fire with the potential for injury.
Refer to Workshop Manual Group 44 for vehicle height specifications.
Important Notice: Technical Bulletins are intended only for use by professional technicians, not a “Do-it-yourselfer”. They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Special tools may be required to perform certain operations identified in these bulletins. Use of tools and procedures other than those recommended in these bulletins may be detrimental to the safe operation of your vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your Porsche Dealer for information on whether your vehicle may benefit from the information. Part numbers listed in these bulletins are for reference only. Always check with your authorized Porsche dealer to verify correct part numbers.
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