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B20 Cam Gear options 140-160

uid 37336's pic
posted by  B20Paul. on  Tue Dec 22 13:06 CST 2015
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last visit: Mon Oct 20 10:54 CST 2014
[RELATED]

Milling the gears to make them lighter, probably for racecars only, purely to save weight.

Cam timing is done with offset keys. 2 valve engines of every brand with limited breathing typically require 4° of timing generally gives the best average torque. The factory spec is 0, but they don't actually set it, the parts just get tossed together and you get something around 0. The worst timing I have seen from buying a cam and tossing it in is 10° retarded. Degreeing in a cam is an essential part of engine building, i consider it as important as ignition timing.
--
69 142S Overdrive + 69 164S Manual






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