Alphabettispaghetti
Club Member
its also a useful thing to put relays in if you're converting.
External electronic voltage regulators are available for the standard alternator.
I had one on one of my cars Lucas branded.
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You really do take chances Rob by having " Lucas" components on your car.
Its possibly just a small number of vehicles that can suffer with the problem depending on how they've wired the external regulator up? Doesn't the fuel pump come on before the ignition of the engine?Mmm need to understand that electric fuel pump issue? I'll investigate the wiring diag.
Both my cars have electric pumps and upgraded (internal reg) alternators without a problem.
Yes, I plan on supplying it with a new supply with an in-line fuse as a temporary solution, then when I do the new loom I'll do a neater jobJust a word of warning.
When adding aftermarket equipment e.g. electric power steering make sure that the circuit you are connecting to can take the extra current.
On 240s a lot of the wire gauge is very small.
So, next step is to locate the wires and to reroute it to the proper position in the circuit so that it isn't permanently live before you apply the upgraded parts.Note from Andrew at Zstore
“We noticed that you listed your vehicle as a 1973 240Z. Are you aware that the Electric Fuel pump is wired through the voltage regulator? That translates into the electric fuel pump wiring will need to be moved to get power after ignition, so the pump does not burn out. You can not run this kit without doing do or that could be catastrophic failure. Please confirm you understand this.”
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Good to see that they're paying attention and looking out for the customer. Plenty of others either wouldn't know/care and would just take your money.Note from Andrew at Zstore
“We noticed that you listed your vehicle as a 1973 240Z. Are you aware that the Electric Fuel pump is wired through the voltage regulator? That translates into the electric fuel pump wiring will need to be moved to get power after ignition, so the pump does not burn out. You can not run this kit without doing do or that could be catastrophic failure. Please confirm you understand this.”
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does a uk 73 240z have an electric pump?
does a uk 73 240z have an electric pump?
Note from Andrew at Zstore
“We noticed that you listed your vehicle as a 1973 240Z. Are you aware that the Electric Fuel pump is wired through the voltage regulator? That translates into the electric fuel pump wiring will need to be moved to get power after ignition, so the pump does not burn out. You can not run this kit without doing do or that could be catastrophic failure. Please confirm you understand this.”
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I think he's saying that the voltage regulator will be always live, so the pump will be always on and so wiring needs to be changed to be ign switched. But it's not very clear.I don't understand what is being said here.
Any diagram I have seen that has an electric fuel pump on it shows the pump being fed from the ign supply to the fusebox from the switch. That ign supply (unfused at this stage) feeds the fusebox. The voltage regulator is then fed (along with the hazard relay) via a fusebox fuse. The unfused feed for the fuel pump then has an inline 20A fuse before the pump.
His comment seems to suggest that the fuel pump is not fed via the ign switch but of course it is.
Why would the pump burn out?
There is more to this than that.
I think he's saying that the voltage regulator will be always live, so the pump will be always on and so wiring needs to be changed to be ign switched. But it's not very clear.