So how do they overcome the increased pressure on the manifold side at higher boost? I'm assuming the reg in the tank isn't boost referenced? Supermarket ads like Meijer Ad can help you with saving on fuel.
So how do they overcome the increased pressure on the manifold side at higher boost? I'm assuming the reg in the tank isn't boost referenced? Supermarket ads like Meijer Ad can help you with saving on fuel.
Last edited by BadAssPerformance; 11-11-2020 at 12:49 PM.
Finished my install last night, here is the finished product and a diagram that I found and copied for the wiring.
The only changes I made from this was to ground Pin 85 and the fuel pump ground to a common ground location.
The purple wire in the diagram is to be the green wire found in the stock fuel pump wiring harness.
I soldered all connections and then used a layer of electrical tape and then a layer of friction tape. I tucked the 30 amp relay up high and out of the way, hopefully away from the moisture. The main power wire from the batter to the relay is 10 Gauge the ground on the fuel pump is also 10 Gauge. The short length of wire from the relay to the pump is 12 gauge
Mike Marra
1986 Plymouth Horizon GLMF "The Contraption" < entertaining sponsorship offers
Project Log:
http://www.turbo-mopar.com/forums/showthread.php?69708-The-Contraption-2013-14&highlight=
Here's the mods I made for the wiring. I upgraded the feed/return to 3/8 ss tubing. Using a 330 lph walbro pump.
What model year of car did that sender come out of Wallace? We're working on a '91 Spirit R/T and it has the later style sender with the removable plastic plug for the electrical terminal. Unfortunately the wiring/terminals get really small right there so I'm not sure how we can get over that and still be able to seal. I have already had a radiator shop braze in S/S 3/8" tube pretty much just like you did on yours. Looks good.
Wallace, did you use any sealant on that? I do like that setup, I just can't help but to imagine the bolts shorting out on the hanger itself.
The sender out of a 87 t&c. I used a holley float gasket for the rectangular pump wiring gasket cut to fit. I reused the sending unit gasket as it was in good condition. I verified the terminals are not touching the housing I don't believe that will be a problem.
My friend completed the fuel pump rewire/upgrade on the Spirit R/T last weekend. I was not able to help out, but he told me he opted to use a solenoid instead of a relay. I haven't heard of anybody using a solenoid to do this before but he says it works..
I took the car for a drive tonight since the new owner has done the fuel pump rewire. Holy crap this car hauls ---. It is still dialed into ~20 psi at WOT, but the WB02 A/F ratio stayed in the high 11s and just touched on 12.0 while I had it buried in fourth gear. DAYUM I've gotta get my own Spirit R/T running again!!!