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This may be a stupid question but how do I know for sure its on ported vacuum? It’s connected to the carb via a small hose so that’s why I believe its ported vacuum as well as the fact I can remove the line and the engine won’t even sputter, not to mention the orifice diameter is very very small. How would live manifold vacuum make a difference?
This may be a stupid question but how do I know for sure its on ported vacuum? It’s connected to the carb via a small hose so that’s why I believe its ported vacuum as well as the fact I can remove the line and the engine won’t even sputter, not to mention the orifice diameter is very very small. How would live manifold vacuum make a difference?
Ah ok I see. I don’t think im burning any more oil than i should be with a BBC 454 bout 1 quart every 1k miles/100 gallons of gas. The distributor is hooked up to ported vacuum I believe. This is a roch quadrajet carb if it helps. Pre-smog
Ah ok I see. I don’t think im burning any more oil than i should be with a BBC 454 bout 1 quart every 1k miles/100 gallons of gas. The distributor is hooked up to ported vacuum I believe. This is a roch quadrajet carb if it helps. Pre-smog
The vacuum reading is quite steady it has a very very small flicker(less than 1hg of vacuum) due to slight valve overlap from the cam. When I rev the motor the vacuum goes from 16 down to 3-5 and then quickly shoots up to 24-25 with a snap of the throttle and then goes back down to 16. I have an infrared tachometer only is that accurate enough?
The vacuum reading is quite steady it has a very very small flicker(less than 1hg of vacuum) due to slight valve overlap from the cam. When I rev the motor the vacuum goes from 16 down to 3-5 and then quickly shoots up to 24-25 with a snap of the throttle and then goes back down to 16. I have an infrared tachometer only is that accurate enough?