I do not have an electrical on any 300 but do on some others . The big thing on this is with two pumps in series you have to be sure the electric allows the main pump to suck gas through it when it is off . Some will not pass gas or may restrict it . But using it only to prime might make sense , use a spring loaded switch , otherwise you really need to tie into oil pressure etc to avoid a real fire hazard , as the electric will pressurize the diaphragm in the mechanical and if it fails ( it does) will spray gas all over and into your engine , equals instant big fire . So in some older i have put the low pressure carter pump wired right , with no mechanical pump due to hazard. this works well but unfortunately you hear it . No mechanical. There are recently submersible low pressure pumps , (99 % submersible pumps are FI pumps way too high for carbs) may fix that noise but a lot of work . And why ? millions of mopar did fine with a good mechanical pump , it cranks a bit if dried out ( modern gas) some think that is good , get oil in engine before start after long sitting . I don't buy that . I am back to leave it all stock , but have thought of a check valve around an electric primer pump , kind of complicated plumbing at pump but would be correct solution I do not know if you can draw gas through the carter . I think it is a vane pump , so you could not . The ones that click are diaphragm pumps probably can draw . ?? put after the mechanical ? never see that but safer , for prime ? can draw through mechanical related , stuck heat risers boil out the carb when you shut off engine . They are shut when parked ( = full heat ) so rust shut . causes lots of trouble including boiled out carb . i remove the plate in general not driving collector car when 20 out improves performance too ( see Edelbrock air gap manifold) jg On Oct 25, 2024, at 6:18 AM, Bob Merritt <Bob@xxxxxxxxxxxxx> wrote: -- For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang --- You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group. To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx. To view this discussion visit https://groups.google.com/d/msgid/chrysler-300-club-international/F55CBBF6-657E-4401-A1EC-E1DFBF432FB7%40gradyresearch.com. |
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