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I think I may have it, Your idle is 800 and the double MP light springs start advancing at ~600 so I think you're already into the slots at idle & if this is correct no wonder only 5 deg of mech was left. How about trying this, use the orig OE light spring plus the orig OE light spring from the dist you found (2 OE light springs) plus keep your current plate. this'll start at ~900 which is above your 800 idle. set the initial back to where it was, 18 right? then run it up & see what your total is (vac adv plugged as always) and at what RPM (for reference) it maxes out at
yes. That's the possibility based on what 1fastcuda posted. My suggestion is to investigate that as much as possible while the distributor is apart. They're such PIA to dissasemble with that little clip down the shaft its worth the time to test as I describe first.
Additional time in experimentation can be saved using calipers to measure all the components and figure out much of this on paper. Slot length is only part of the picture; distance of the slots from centerline, and loop to loop spring lengths are two other key dimensions. I also measure and do a full spring calculation, and figure out the distance the weight pins move but not many folks would and I'm not suggesting that here.
Last edited by Mattax; 03/12/11 12:52 PM.
