Trying to help out a buddy with a 62 Caddy. New plugs, cap, rotor, Pertronix, coil, wires. New Holley 600 carb. Replaced all vacuum lines and verified no leaks. I set the timing at 5* with no vacuum hooked up. I see 14* at 2500rpm. With the dashpot hooked to ported vacuum, I see 19* total at 2500rpm. (With the dashpot hooked to full vacuum, I get 20* at idle and 39* at 2500rpm, so the advance seems to work.) The car is a turd with so little advance on the road. For a bandaid, I reset the timing to 12* initial and see 28* total at 2500rpm and this is way more driveable. But is still isn't right. Its been a long time since I got into a dizzy, but I am thinking the springs might just be ****ped out. Thoughts? Thanks guys!
Stock springs are really stiff. I dont think full advance would come in till way higher than 2500 RPM.
Checked TDC already and it looks good. I was basing my total timing test on what I had seen on here with a recommended 30* at 2000-2500. I tried googling it and couldn't find any other decent specs
Confirmed that vacuum advance is working? Also is it missing at all at higher RPM's? I had to shim my distributor on my 62 cadillac when I converted to Pertronix because at higher RPM's I was getting too large a gap.
advance is working, it doesn't miss at higher RPMs, biggest issue was freeway acceleration or merging. Upping the timing helped that. I measured per the instructions when I put it together and max gap was less then .060. so I *think* that's OK. I would imagine that would cause a miss but not effect advance though.
Rebuilt the engine in 1960 coupe, 390, had to replace springs in dizzy as one had failed, solved the slugish advance problem.
Mechanism in the distributor gets gummed up or even rusty. There's a tube or oil cup somewhere on that ****er. Can't hurt, may help.
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