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posted on October 20th, 2004 at 05:32 PM
Magfire rotor scrapes sensor
Hi all.
I just got a magfire to replace my points (they were worn anyway, so what the helll), but I've fallen at the last hurdle.
The distributor is the vacuum advance kind on a '74 1300 motor. I followed the instructions to the letter, including sliding the little spacer over
the distributor shaft before putting the rotor on.
I seem to have possibly two problems though. I can push down the shaft, which causes the magfire rotor to touch the sensor. Because the shaft will
actually move down, I also can't get the rotor to go on all the way so that the bottom is tight against the top of the magfire rotor.
Also when I put the cap back on, I think I can feel the whole shaft move downwards, which strikes me as a bad thing since that must mean that it's
rubbing on the plastic bulge in the centre of the cap.
I imagine that what needs to be done is another ring slipped on over the shaft before putting the magfire rotor on to increase the clearance.
Anyone have any advice because I'm clueless. I'm assuming that it's not right for the magfire rotor to scrape on the sensor.
lugnuts
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posted on October 20th, 2004 at 07:14 PM
Hey dude hows it goin,ask blue 74l hes the magfire guru,slater :thumb
andrewh
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posted on October 20th, 2004 at 07:20 PM
Cheers for that. I've sent him a U2U.
Bizarre
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posted on October 21st, 2004 at 09:32 PM
OK - good and bad news Andrew
I pulled out a VAC dizzy and tried to put the mag fire on that.
No go - the VAC dizzy has the post style of points
My 009 and mag fire has the dimple/pin that fits in the base style.
Stuffed if I can see how it interchanges :jesus
Different style of Magfire or Vac dizzy - What do you have??? Would be interested to know.
Good news is i still have the ring i didnt use from mine
You can have it if you want.
Futue te ipsum!!!
andrewh
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posted on October 21st, 2004 at 10:21 PM
I assume by post style points you mean that there is a post onto which the points slide, and that the dimple/pin has a recess in the distributor and a
little pin on the bottom of the points that fits into the hole.
If that's the case, mine is the dimple/pin type. The sensor fits in okay, it's just the rotor that is causing problems. My distributor must be
different to yours, although it would explain why the guy at Repco gave me the wrong points.
I thought I'd actually fixed it last night, but as I'll get to later, I think I was horribly mistaken.
The problem seemed to be that with the magfire rotor on, when you try to push the high volltage rotor onto the shaft, it pushes down to the point
where the rotor, magfire rotor and sensor are all butted up against each other, but the rotor (the high tension one) is not clipped on all the way. If
you turn it it will jump free of the notch in the distributor shaft and spin freely.
I took the distributor out of the engine and assembled it all out of the car (so that I could prevent the shaft from moving and clip the rotor on
properly). This seemed to reduce the amount that the shaft was pushed down when putting the cap back on to the point where I thought it was running.
Unfortunately I didn't check it, and this morning I think I might have broken the magfire because the car completely died on my way to the train
station much to the irritation of the people stuck behind me (of which not one stopped to help me). Fortunately a kombi driver came along and gave me
a push.
So because I did a half-assed job, I think I might have broken my magfire and sent $65 down the crapper.
I'm going to test it on the weekend and maybe set it up in another distributor, get the clearances right and then swap it for the current
distributor.
If it turns out that I didn't destroy the magfire, I'd be very glad to take that little silver ring off your hands. I've got a plan for getting the
clearances right which hinges on finding another ring.
kombikim
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posted on October 21st, 2004 at 11:12 PM
I had the same problem, the shaft will push down but does not actually run that way the problem is the rotor button is too tall, when you put the cap
onthe sprung caron brush in the cap gets pushed right in & & the shaft down & the Rotor button will be actualy rubbing on the cap itself,
which will in short time destroy the cap & the button, I had to grind the base of the rotor button down slowly & carefully until it was the
correct height, I also found that with the spacer ring the rotor disk did not sit tight enough & eventualy the plastic wore so that I had variable
timing, I then gave up on the whole thing, realy only suitable for an 009
Please, I need drivers side window regulator (winder mechanism) for my '54
