Post by mongoose on Oct 12, 2010 8:58:21 GMT -5
I've lost track of the 1/4" pipe / 1/4" nipple brass fitting that screws into the intake manifold that provides the vacuum to the vacuum modulator (I've got a TH400, but I think the fitting was the same for the Jetaway).
I've looked at several auto parts stores here in town, and nobody has one that doesn't require 3 separate fittings to make the connections.
I'm considering using a fitting with a 3/16" nipple, or just tie into the vacuum port on the 750 Holley DP (Pro-form actually) and use a set-up fitting in the vacuum line to adapt from a 3/16" to 1/4" line at the transmission. I know I won't hurt anything, but should I expect some issues by doing that. Only thing I can think of is that the 3/16" source won't be able to draw as much pressure as a 1/4" source would, which would effectively reduce the vacuum the modulator would see.
Thoughts? Am I once again over-thinking the situation?
I've looked at several auto parts stores here in town, and nobody has one that doesn't require 3 separate fittings to make the connections.
I'm considering using a fitting with a 3/16" nipple, or just tie into the vacuum port on the 750 Holley DP (Pro-form actually) and use a set-up fitting in the vacuum line to adapt from a 3/16" to 1/4" line at the transmission. I know I won't hurt anything, but should I expect some issues by doing that. Only thing I can think of is that the 3/16" source won't be able to draw as much pressure as a 1/4" source would, which would effectively reduce the vacuum the modulator would see.
Thoughts? Am I once again over-thinking the situation?
