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Registered
Join Date: Mar 2000
Location: Auburn,In. U.S.A.
Posts: 2,447
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930,
The 2 ports on the distributer, one is vacuum advance and one is vacuum retard. Do a search for distributors and you will find lots of info.
Don't ever set timing by advancing until it knocks then backing it off. It needs to be timed by the book at 4000 rpm with a timing light.
If your using a MSD 6AL ignition system you can buy a MSD Boost Timing Master this allows you to bump up your initial timing setting for better low end grunt and then when boost starts it allow you to retard timing so many degrees for every PSI of boost which prevents detonation at higher boost level.
Cole
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Cole - 80 930 "The Old Sled"
Mods: TurboKraft Custom IC, 934 Headers, GSX 61, Zork, Port Work, SC Cams, Air Mod Fuel Dist Relocated, Water Meth Injection, BL WUR, MSD 6530, Greddy EBC, Synapse Bov, Short 2nd & 3rd with 8:37 R&P, Wevo Shifter, Coupling, and Mounts, MTX-L SSI-4, Big Brakes, Rebel Coilovers, Bilstein Sports.
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