Engine/Drivetrain - Dynamometer Usage Precaution

911 Turbo (996)

0301 1010

Binder - Group 1 - Engine, Part 1
Replaces bulletin Grp 0, # 0201, dated
5-31-02 & Grp 1, # 2/01 dated 3-30-01.

Date: 2-7-03

Power Measurement On A Roller Dynamometer

Vehicle Type:
911 Turbo (996) / 911 GT2

Model Year:
As of MY2OO1 (1)

Concern:
Power measurement on roller dynamometer.

Bulletin Filing:
This bulletin replaces bulletins in 911 Turbo (996) Technical Manual, Group 0, # 0201, dated 5-31-02, and Group 1, # 2/01, dated 3-30-01. Affix S/S decal across page 27 in Technical Bulletin Book R.

Information:

It is not possible to carry out an output (power) measurement on the two-wheel roller-type test stand with the 911 Turbo (996) and 911 GT2. This is in conjunction with the specifications given in the Owner's Manual.

The reasons are as follows:

If the vehicle is run on a two-wheel roller dynamometer, sufficient inner-cooling cannot be ensured. As a result, boost air temperatures reach excessive values. This will lead to loss of engine power and damage to the engine due to overheating.

The considerable amount of heat generated may damage the transmission.

The significant amount of slip at the wheels caused by the high power output may lead to incorrect output measurements and damage the tires.

Note:
Tire damage may not be immediately recognizable.

Literature:

Owner's Manual MY'01, page 54; MY'01, page 56.





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