Jeep Yj Vacuum Advance at Blake Wrixon blog

Jeep Yj Vacuum Advance. A quick and easy way to somewhat check this is to have the engine running remove the ported vacuum source for the advance, place it. When upgrading your late model amc 4.2 to an hei it is improtant to put an advance curve kit on to get the best performance and effeincy. I have an 89 yj with a 4.2 nuttered and stock carb. It started to get worse gas. Without pics of what all has been done hard to say for sure what is currently needed. Currently i have the advance connected to ported vacuum and am running base timing at 12* with my current setup. I did the nutter last year and have had no issues until recently. But when you install the hei, you won't need anything. The manifold vacuum port is the only one to give full vacuum advance at idle, then when you get on the gas the timing takes an instant. The ported vacuum fed advance is mainly used for part throttle cruising, such as highway driving.

Currently i have the advance connected to ported vacuum and am running base timing at 12* with my current setup. I have an 89 yj with a 4.2 nuttered and stock carb. But when you install the hei, you won't need anything. Without pics of what all has been done hard to say for sure what is currently needed. It started to get worse gas. A quick and easy way to somewhat check this is to have the engine running remove the ported vacuum source for the advance, place it. The manifold vacuum port is the only one to give full vacuum advance at idle, then when you get on the gas the timing takes an instant. I did the nutter last year and have had no issues until recently. The ported vacuum fed advance is mainly used for part throttle cruising, such as highway driving. When upgrading your late model amc 4.2 to an hei it is improtant to put an advance curve kit on to get the best performance and effeincy.

Jeep Yj Vacuum Line Kit

Jeep Yj Vacuum Advance When upgrading your late model amc 4.2 to an hei it is improtant to put an advance curve kit on to get the best performance and effeincy. The ported vacuum fed advance is mainly used for part throttle cruising, such as highway driving. I have an 89 yj with a 4.2 nuttered and stock carb. Without pics of what all has been done hard to say for sure what is currently needed. The manifold vacuum port is the only one to give full vacuum advance at idle, then when you get on the gas the timing takes an instant. Currently i have the advance connected to ported vacuum and am running base timing at 12* with my current setup. It started to get worse gas. I did the nutter last year and have had no issues until recently. When upgrading your late model amc 4.2 to an hei it is improtant to put an advance curve kit on to get the best performance and effeincy. A quick and easy way to somewhat check this is to have the engine running remove the ported vacuum source for the advance, place it. But when you install the hei, you won't need anything.