Bj73 with 14BT conversion

[landman1985]

hello mudders. I have been reading your posts for some time. I have resently embarked on replacing my blow up old 3b with something with a bit more go and reliability.
my brother and I have put in a rebuilt 14bt into my truck. we have fabricated the dump pipe and have run new lines for the power steering and vacuum.
currently in the process of modifying the thermostat housing to get it to fit under the bonnet.
any way to my questions which I hope somebody can shed some light on to.
1. it has the rotary fuel pump, there is a plug that turns the pump on and off that has 3 wires. anyone able to tell me which wires do what. I know that one at least needs to go to the ignition but which one and what are the other for?
2.my 3b had the fuel return line going back in where the main fuel line went in. this pump has a separate fuel in and fuel out. is it ok to just run it back to the inlet as with the inline pumps on the 3b.
your help would be so appreciated. I will get some pictures of the build up shortly for those who may be interested.

 

[landman1985]

some pictures to help

the dump pipe is 316 stainless steel, we have made it a split flange type isolating the waste gate and exhaust turbine , in effect trying to reduce turbulence from the waste gate and by plumbing it in further down creating a vacuum effect to aid in exhaust flow.
the other is the engine in its new home and the final image is the control plug from the question above.
heaps more images to come once i get them sorted.

 

[jb BJ73]

Looks good mate. Didn't want to do a screamer pipe for the wastegate?
Not 100% sure on the pump wires but I'm guessing that 1 will be the main pull in coil in the solenoid, one may be the hold in coil for the solenoid and one is probably earth.

Not sure if rotary pump solenoids operate like that but you could check by testing the resistance across the terminals.
I think you should be able to still get an engine manual that covers most of the b series motors if you check out the stickies
With the fuel return, if you don't have a return line that goes back to the tank then you should be able to T it in to the supply line to the filter, as long as the return fuel doesn't get to hot.

 

[simonliew]

not 100% sure one of the line is for fuel cut solenoid n the other two is the tach sensor.
the rotary pump has a fuel return line to the tank to help cool the pump,prob ok to tee ont othe supply line because when we run vegie on rotary pump,we close off the return line.

 

[ForealBoreal]

those are hot looking little engines.

 

[roscoFJ73]

te black one should be for the solenoid.The other 2 are for the tach sensor most likely.On a 1HZ they are a light blue and a brown wire.

Great swap