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She breathes again!!!

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richberman

richberman

Jedi Warrior
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After 1.5 years of rebuilding my 1957 100/6 we (Superwrench and me) attempted to start her up. He's the sequence....

Prep
Attempt1
Attempt2
Attempt3
Attempt4
:banana: :banana: :banana: :banana: :banana: :cheers: :cheers::cheers::cheers::cheers::cheers:

So now it won't turn off by either turning the key of killing the battery cutoff directly. Any idea on why it keeps running once the alternator is providing the juice? Could I have mis-wired the MSD? I tied the small red wire to one of the tabs on the key switch (there were 4 tabs and only 3 used) or could it be an alternator mis-wiring?

You can see still pictures of my build here:
Still pictures

Thanks everyone for your support and immense help over the year and a huge THANK YOU to MOSS MOTORS for providing the awesome Trophy exhaust. Now I need to tune the note!!!
:driving: :driving::driving::driving::driving::driving:
 
Rick,
Thanks for that idea on the MSD. I'm assuming since I don't have an external voltage regulator anymore (I've converted to alternator and used gutted V.R. as a buss bar only) that the resistor to ground at the bottom of the page you referenced is what I need. Do you think I could test this theory by just pulling off the small red connector to see if that shuts the engine off? If it does, what kind of resistor should I try?
thanks for the kind words and help,
rich
 
Hi Rich
Compliments to you and Bob Superwrench-it run very well-probably trimming can add more progress but this is a GOOD START POINT :hammer: :cheers: :winner1:
I have added your video converted to mp4 to my album REBUILDING for my Italians friends
https://picasaweb.google.com/lh/photo/YFEkL3yaz-riqkg-pTFB99MTjNZETYmyPJy0liipFm0?feat=directlink
FUEL GAUGE
if it was working before the mounting on dash
see if the rear two wires are inverted (it appear to be before the normal ZERO point) -or see if you have correctly grounded the sender unit- one black wire must be added
from one of the sender screws to frame ground-
I suppose that it is NEW as it shape is very good-and probably with few efforts it works
I appreciate your new route for the depression SERVO pipe
Cheers
Andrea
 
Andrea,
Thanks for your comments. And thanks for providing the new servo hose routing plans. The fuel gauge is original and I never checked it before mounting to dash. I did replace the sending unit and grounded it to the chassis. I will check the wiring in the boot first, then check the gauge itself.
I will first need to work out the red wire to the MSD to see if I can get the car to turn off.
rich
 
Derek,
The engine is literally still running. When I turn the ignition key off or cut off the battery (negative ground) cut off switch the engine continues to run at idle until I switched off the fuel pumps with an auxiliary cut off switch I used. What I don't quite understand is how the MSD ignition can still get electricity when the battery ground is disconnected unless it's getting it via the alternator somehow. Any thoughts? Where should the resistor be in the circuit and what size/type?
rich
 
Sounds like it is dieseling to me.The alternator should not produce power without the battery conected???
 
If the alternator is wired so that the cut-off wire still gets power from the alternator output, it will continue to produce power with no battery connected, assuming you have a 3-wire alternator. I had this problem when I first installed the alternator, but I forget how it was resolved. I had to wire the trigger wire to somewhere else.
 
Big Step, Rich; you're on your way.

The only Healey I ever worked on (Patricia Dewitt's BJ8, circa 1978... you always remember the bad ones...) that wouldn't shut off had the horn wire inside the steering column melted/shorted to the turn signal feed (keeping it hot all the time). That car, still with its original generator, could be shut off via the battery cut-off switch.

Yours has got to relate back to the alternator conversion. I have the MSD too, wired as per their instructions for a point-trigger (also negative ground) and do not have any run on issues.

But still, <span style="text-decoration: underline">congratulations</span>, and say HI to Bob for me!
 
John,
Here are pictures of my electrical wiring. Do you see anything that I'm missing?
Some of these pictures are before the final MSD connections.
The white wire from the MSD now go to the coil.
I'll have to take some new pics to show it.

DSC_00152.jpg

DSC_0017.jpg

DSC_0016.jpg

DSC_0015.jpg

DSC_0014.jpg

DSC_0013-1.jpg

DSC_0007-1.jpg

DSC_0005-1.jpg

DSC_0002.jpg
 
Randy Forbes said:
Big Step, Rich; you're on your way.

The only Healey I ever worked on (Patricia Dewitt's BJ8, circa 1978... you always remember the bad ones...) that wouldn't shut off had the horn wire inside the steering column melted/shorted to the turn signal feed (keeping it hot all the time). That car, still with its original generator, could be shut off via the battery cut-off switch.

Yours has got to relate back to the alternator conversion. I have the MSD too, wired as per their instructions for a point-trigger (also negative ground) and do not have any run on issues.

But still, <span style="text-decoration: underline">congratulations</span>, and say HI to Bob for me!
Click to expand...

No steering harness on the car yet. The alternator conversion was confusing. I had three different diagrams and all were different. See my final pics and please comment if you see something off. I gutted the voltage regular and used it for connections only.

thanks,
rich
 
Rich, try turning on the headlights or heater fan when it is running with the key off as that will kill any voltage in the ignition circuit if it is coming from the alternator.

That looks like an ACR Lucas alternator and the way they put the dash light off is to feed 12V out of the small terminal when the alt is charging and ground the terminal when it is not charging which puts the dash light on as it is fed from the key. When you turn off the key, that terminal can feed power back through the bulb to the ignition and if the MSD has an key-power terminal which only activates the module rather than powering it, then it might be staying activated. Does the MSD have a key-signal wire and a 12V battery power wire too?

The ACR alternators don't like running without the battery connected either as they don't have a very clever regulator inside.

Andy.
 
I'm hopeless with electrics, but happen to be installing an FIA cut out switch A resistor is included in the circuit when installing a FIA approved electric cut off switch which in an emegency cuts the power without the ignition being switched off first. However when you do this the alternator thinks there is a battery problem so pushes out more power which needs to be taken through the resistor to ground otherwise it can damage the alternator. Your regulator (in the alternator) may now be damaged although it isn't always the case.

The FIA switch uses a 3 ohm resistor. Your problem is somewhere else obviously as it shouldn't be necessary to have the resistor in a normal circuit.

Thats my understanding, but may be totally wrong! Hopefully a 'sparky' will be able to comment.
 
Hi Rich,
Hope you have gotten the ignition issue fixed. I am afraid that I cannot help with the MSD. Congrats on the start!!!! I still recall that feeling, too. Great job.
Lin
 
57_BN4 said:
Rich, try turning on the headlights or heater fan when it is running with the key off as that will kill any voltage in the ignition circuit if it is coming from the alternator.

That looks like an ACR Lucas alternator and the way they put the dash light off is to feed 12V out of the small terminal when the alt is charging and ground the terminal when it is not charging which puts the dash light on as it is fed from the key. When you turn off the key, that terminal can feed power back through the bulb to the ignition and if the MSD has an key-power terminal which only activates the module rather than powering it, then it might be staying activated. Does the MSD have a key-signal wire and a 12V battery power wire too?

The ACR alternators don't like running without the battery connected either as they don't have a very clever regulator inside.

Andy.
Click to expand...

Andy,
I will take some photos of my wiring diagram and actual wiring to day if I can, but you are correct about the MSD having direct 12v from the battery and a small red wire goes to the ignition key for switching purposes only. Can I test this by pulling the red wire off the key switch to see if it kills the ignition? They did include a diode for this problem if that is in fact it.
thanks,
rich
 
Hi Rich,
actually after thinking about it a bit more, the fuel pump won't run off the excite voltage from the alternator so it probably isn't that. Pulling off the MSD key wire should kill the engine, if it doesn't then there is an issue with the MSD.

The ACR alt wiring should be very simple: the big wire goes straight to the battery (usually the starter solenoid +ve terminal) and the small wire goes to the dash charge bulb.

Andy.
 
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