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SLENUT Offline
#1 Posted : Tuesday, 6 October 2020 6:00:25 PM(UTC)
SLENUT

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Hello all

Years ago i got a rebuilt Rochester from Hume perfomance, the right one for a VB 5 litre manual.
I also decided to get an electric choke for it. However i put the wire to the wiper motor and has made the wiper motor very slow.

Where should i have this wire on? I believe i need 12V to make it work properly?
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Smitty2 Offline
#2 Posted : Tuesday, 6 October 2020 9:50:44 PM(UTC)
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Originally Posted by: SLENUT Go to Quoted Post
Hello all

Years ago i got a rebuilt Rochester from Hume perfomance, the right one for a VB 5 litre manual.
I also decided to get an electric choke for it. However i put the wire to the wiper motor and has made the wiper motor very slow.

Where should i have this wire on? I believe i need 12V to make it work properly?


Damo.. you need to a find a 12v 'ignition' on wire anywhere in the engine bay.

do NOT use the coil lead as some do.. as it is a resistor type power feed on VBs
(which come with points ignition) but any 12v feed that comes live when you
turn the ignition on


ps.. the wiper motor is not a good idea as the choke pulls a few amps &
don't fuse the choke with a 1A fuse either. Needs 10 amps

here is mine on the race car (right click and view pic for a closer shot)
.. VKs have a nice handy fusebox close by Whistle

Edited by user Tuesday, 6 October 2020 9:52:46 PM(UTC)  | Reason: Not specified

Club circuit racing...the best fun you can have with your pants on
SLENUT Offline
#3 Posted : Wednesday, 7 October 2020 9:26:59 AM(UTC)
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Thought they maybe the case, hmmm. I'll have a looksy and find a place for it. I've read about the pink wire can be used.
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Smitty2 Offline
#4 Posted : Wednesday, 7 October 2020 1:45:55 PM(UTC)
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Originally Posted by: SLENUT Go to Quoted Post
Thought they maybe the case, hmmm. I'll have a looksy and find a place for it. I've read about the pink wire can be used.


pink wire is your power feed to the coil. I wouldn't use it
on a VB it is a resistor wire.. won't run your ignition AND the coil

Have you got a Quaddy with the idle nudger/anti-dieseling motor on the side of it on the 308?
(standard factory fitment ...) From memory , that has a full 12v feed that runs when
the ignition is on. That is.. when you start and run the engine, that idle nudger is always
powered. You have a tester or multimeter you can check the volts on that circuit?



Club circuit racing...the best fun you can have with your pants on
SLENUT Offline
#5 Posted : Wednesday, 7 October 2020 3:09:27 PM(UTC)
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No i don't have the anti dieseling solenoid.
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Dr Terry Offline
#6 Posted : Wednesday, 7 October 2020 3:37:42 PM(UTC)
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Originally Posted by: SLENUT Go to Quoted Post
No i don't have the anti dieseling solenoid.


All VBs had an idle stop solenoid as standard. Why anybody would remove it is beyond me.

Having said that. Even if the solenoid is no more, its wiring harness might still be there. It would be a good supply for the choke.

Dr Terry
If at first you don't succeed, just call it Version 1.0
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Smitty2 on 7/10/2020(UTC)
Smitty2 Offline
#7 Posted : Wednesday, 7 October 2020 5:14:15 PM(UTC)
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Originally Posted by: Dr Terry Go to Quoted Post
Originally Posted by: SLENUT Go to Quoted Post
No i don't have the anti dieseling solenoid.


All VBs had an idle stop solenoid as standard. Why anybody would remove it is beyond me.

Having said that. Even if the solenoid is no more, its wiring harness might still be there. It would be a good supply for the choke.

Dr Terry


yes... good pickup on that

Club circuit racing...the best fun you can have with your pants on
Premier 350 Offline
#8 Posted : Wednesday, 7 October 2020 7:52:32 PM(UTC)
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Slightly off topic, but I had an electric choke Holley on my HQ. Since I was running a HEI ignition, I used a relay to give 12V to the HEI and also power the choke. The original resistance ignition wire was shortened and triggered the relay. Never a problem in 10 years and 4000 miles. In your case you could use the 12V from the wiper to trigger the relay and run separate wiring for the high amperage draw of the choke.
Attn camry drivers. The accelerator is the skinny pedal on the right.
SLENUT Offline
#9 Posted : Wednesday, 7 October 2020 8:34:40 PM(UTC)
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Reason it doesn't have anti dieseling solenoid cause sometime in its life its been bastardised to buggery. Had a Holley and torker manifold and all pollution gear removed when i got it 20 years ago.
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wbute Offline
#10 Posted : Friday, 9 October 2020 12:34:11 PM(UTC)
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Originally Posted by: Premier 350 Go to Quoted Post
Slightly off topic, but I had an electric choke Holley on my HQ. Since I was running a HEI ignition, I used a relay to give 12V to the HEI and also power the choke. The original resistance ignition wire was shortened and triggered the relay. Never a problem in 10 years and 4000 miles. In your case you could use the 12V from the wiper to trigger the relay and run separate wiring for the high amperage draw of the choke.


Why use a relay? Why not just take 12v straight from any 12v that’s convenient?
Dr Terry Offline
#11 Posted : Friday, 9 October 2020 1:17:05 PM(UTC)
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Originally Posted by: wbute Go to Quoted Post
Originally Posted by: Premier 350 Go to Quoted Post
Slightly off topic, but I had an electric choke Holley on my HQ. Since I was running a HEI ignition, I used a relay to give 12V to the HEI and also power the choke. The original resistance ignition wire was shortened and triggered the relay. Never a problem in 10 years and 4000 miles. In your case you could use the 12V from the wiper to trigger the relay and run separate wiring for the high amperage draw of the choke.


Why use a relay? Why not just take 12v straight from any 12v that’s convenient?


Because of the current draw. The total current of the HEI plus the electric choke element is going to be in the region of 20-25 amps continuous. This is a bit more than the old 70s wiring & ignition switch is going to be happy with.

By running a relay you will improve performance (less voltage loss) & improve reliability.

Dr Terry

Edited by user Friday, 9 October 2020 1:21:52 PM(UTC)  | Reason: Not specified

If at first you don't succeed, just call it Version 1.0
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Smitty2 on 9/10/2020(UTC)
wbute Offline
#12 Posted : Saturday, 10 October 2020 7:49:20 AM(UTC)
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Of course. Sorry I was just off night shift. Brain doesn’t work too well then.
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