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why does the FSM call for smaller valve adjustments for the F compared to the B?(and stuff) 140-160

posted by  mjamgb on  Thu Sep 23 07:11 CST 2004
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last visit: Tue Sep 4 14:53 CST 2012
[RELATED]

You will note the different cam profile. The clearance spec is usually tied to the cam dynamics.
Phil has mentioned that setting the "B" engine to the other spec will release a little more power at the cost of losing some fuel economy due to greater scavenging, loss of some exhaust valve cooling time, and a slightly rougher idle.

Mike!






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