Check out this Cam Adjustment Tool
Dave at Volvo Specialists said years ago he toyed with cam timing on his 850 Turbo but found that no adjustment was better than the factory adjustment. At one point, his low end was so bad he could have run faster than his 850 for the first 30 feet. To the right is the Volvo cam timing adjustment tool. It seperates at its center. The two circular outboard cylinders lock into the cams, and from the other side you dial in degrees plus or minus from factory center.
Bonus! More on the Volvo 850
Volvo unveiled an entirely new model series in June 1991, the Volvo 850 GLT. The Volvo 850 GLT was launched under the banner of “A dynamic car with four world-beating breakthroughs”.
The four new features were: transverse 5-cylinder engine driving the front wheels, Delta-link rear axle which combined the dynamics and ride comfort of independent suspension with the security of a live rear axle, the SIPS integrated side-impact protection system, and the self-adjusting front seat belt mechanism.
The exterior design of the 850 bore a strong Volvo identity, and its 740 and 940 heritage was immediately apparent.
Volvo 850 GLT received a tumultuous welcome; seldom has a new car reaped so many awards as the 850.
Over the intervening years, the 850 series has been expanded with additional variants, among them turbocharged petrol versions and a direct-injection turbo-diesel.
The Volvo 850 was also the first car in the world to offer side-impact airbags, which were introduced in autumn 1994.
In model year 1997, the S70 replaced the 850 Sedan car.
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