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Wastegate adjustmet: where are the best instructions? 700 1990

posted by  someone claiming to be Arby on  Sat May 12 23:45 CST 2001 [RELATED]

Where is the best place to get detailed instructions on adjusting the wastegate for more boost for my 1990 740 Turbo Sedan (only 50,000 original miles!)? I'm somewhat mechanically inclined, but need a "confident guide." Thanks!







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    Re: Wastegate adjustmet: where are the best instructions? 700 1990

    posted by  someone claiming to be John Sargent on  Sun May 13 04:37 CST 2001 [RELATED]

    The best instructions are in the Factory Service Manual. Without the service manual, crawl under the car and cut the sealed wire the factory installs to detect tampering. Then remove the external snap ring that retains the wastegate actuator rod end on the wastegate shaft. Loosen the jam nut that keeps the rod end locked on the shaft. Adjust the end in or out as you desire. One turn equals 0.4 to 0.6 psi. Factory boost is set to 6.8 to 7.7 psi. It is easy.






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