I've had 'tired' coils before, that needed replacing, however I've just experienced very sudden failure. Driving along, constant speed of 80kph, started missing for about 10 seconds then dead.

Multimeter shows dead secondary winding. Coil is less than 6 months old, maybe a 1000 k's.

Anyone had this? Just bought a dud, or something can cause it? Running 45D electronic dizzy.

Coil type?

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PrOuDlY aSkInG qUeStIoNs FoR uR aMuEsMeNt

Couldn't tell you you the brand - some generic type one I bought when I was running a pulsar dizzy so 2 or 3 ohm on primary (I forget which) standard 'can' style coil.

Secondary O/C?

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http://www.youtube.com/user/Hanras

Yup.

yep, just had a customer report the same thing & yep, the same thing it was

they just don`t make things like they used to

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No offence intended here but--> anyone writing a book about minis 30 years ago may not have experienced such worn or stuffed-with components as we are finding these days.

You should put your heart & soul into everything you do.

I always maintain that solid state devices ( and a coil is pretty "solid state") will either fail the first time it is turned on or the first time it is allowed to run "hot" ie an extended length of time. - after that it will last nearly indefinitely - only third party items will cause failure like a geko getting in the works.

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David L


My greatest fear in life is that when I die my wife will sell my Mini and tools for the price I told her I paid for them!

Well, I guess this is your first exception. Coil has had plenty of heat cycles, and went bang under very average conditions.

Annoyed the hell outta me, first time in 20 odd years of driving the things that a mini has ever left me stranded on the side of the road. Seriously.

Voltage regulator working OK - no sharp spikes coming off the alternator ? no shorts somewhere causing voltage fluctuations? but then a dry solder joint or bad crimp in the coil could have let go.

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David L


My greatest fear in life is that when I die my wife will sell my Mini and tools for the price I told her I paid for them!

Yeah anything's possible I guess. I'll dig through the parts bin and carry a spare for a while and see how it goes.

I have seen 2 GT40-R coils fail when used in points systems with no ballast resistor. They got hot... then no worky properly.
Gafmo's was one can't remember who had the other (maybe it was CD?).
However, they do run fine with a Pulsar electronic dizzy, and stay cool.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Ya but remember this was with an electronic dizzy.

I had a poke in the cupboard, have found 4 old standard coils (not tested yet). I've emailed the guy I bought dizzy from to see what he says the resistance should be.