| HEI advance stop bushing [message #307327] |
Sun, 18 September 2016 09:20  |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma:
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Senior Member |
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I did a couple 400 mile runs with the new Qjet and coach ran great. I have the base timing set "by ear". This is most likely a couple degrees advanced over stock but adding 3.42s I felt I could add some timing due to less loading. I never get pinging on the primaries but will get some light pinging as I get into the secondaries. I run stock vac hose routing so ported vac. I would think as the secondaries open vac advance would be going away? And at that point ported and manifold should be the same. I know some GM points distributors had a rubber advance stop bushing that slid over the end stop pin. That deteriorates and then over advances. Did HEI use this? I really don't want to take away base timing as 99% of road time is on the primaries. This is a factory replacement NOS correct carb so don't think I should need richer secondary rods but that might help. I have been meaning to send my distributor to Dick P but don't have the time window to do that now.
John Lebetski
Woodstock, IL
77 Eleganza II
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