I could use a refresher and maybe some links to earlier posts on Turbo timing and fuel supply minimums, turbo setup is running and want to dial in the fuel and ignition timing now that basic running condition is established.
It's a 250 with DS II Distributor/Coil and HEI trigger. Ran well NA carbed and after adding turbo it started OK - initial running with the Buick 4Bbl and draw-thru turbo setup. I have Vacuum advance disconnected and static timing @ 14 degrees, centrifugal advance looks like about doubles that ( by eye's on timing light 8) ) .
Welding in an A/F meter bung for carb tuning, special carb has external Power Enrichment Valve vac-port but need to work out Vac/Boost signal. The gravity feed gas line seems fine for run-stand turbo/carb demand but fuel demand under load will probably need more than mechanical pump with regulator ?.
thanks
.
It's a 250 with DS II Distributor/Coil and HEI trigger. Ran well NA carbed and after adding turbo it started OK - initial running with the Buick 4Bbl and draw-thru turbo setup. I have Vacuum advance disconnected and static timing @ 14 degrees, centrifugal advance looks like about doubles that ( by eye's on timing light 8) ) .
Welding in an A/F meter bung for carb tuning, special carb has external Power Enrichment Valve vac-port but need to work out Vac/Boost signal. The gravity feed gas line seems fine for run-stand turbo/carb demand but fuel demand under load will probably need more than mechanical pump with regulator ?.
thanks
.