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#1
IP: 75.142.49.80
12-07-2013, 09:23 PM
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Mystery coil
I pulled off the coil which had been running on my A4 for years - how many ? don't know. It was measuring 7.1 ohm. The old coil is a metal can Delco Remy. The can is embossed low down with 069, and below that 12V. Anyone recognise the number, or is it one some cowboy fitted?
__________________
"Halcyon" 36' custom sloop. 8 tons. Glass over strip plank mahoghany. Spruce mast and booms, launched 1969. Original A4. 
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#2
IP: 173.166.26.242
12-08-2013, 12:37 AM
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I have never heard of a coil at 7.1 ohms across clean terminals still firing but I guess it could happen - sure wouldn't have to worry about resistors.
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#3
IP: 75.142.49.80
12-09-2013, 01:29 AM
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Quote:
__________________
"Halcyon" 36' custom sloop. 8 tons. Glass over strip plank mahoghany. Spruce mast and booms, launched 1969. Original A4.
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#4
IP: 207.106.217.129
12-09-2013, 12:50 PM
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I think my coil has the same embossed "069". I'll check next time I'm down there.
I've got a new coil to install thinking that mine is going bad...
__________________
Scott
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#5
IP: 75.142.49.80
12-09-2013, 10:44 PM
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My block would be about the same vintage. Maybe 069 is 1969?
__________________
"Halcyon" 36' custom sloop. 8 tons. Glass over strip plank mahoghany. Spruce mast and booms, launched 1969. Original A4.
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#7
IP: 75.142.49.80
12-11-2013, 02:56 AM
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block or coil? Here's one showing both.
Not a great pic of the engine - I've got better, but its tight in there. S
__________________
"Halcyon" 36' custom sloop. 8 tons. Glass over strip plank mahoghany. Spruce mast and booms, launched 1969. Original A4.
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#8
IP: 107.0.6.242
12-11-2013, 08:09 AM
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That number under the coil on the gear housing is the casting date for that part; compare to the date near the arrestor on the block itself.
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#9
IP: 174.65.4.236
12-11-2013, 09:59 AM
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I was curious to see what a 1969 coil looked like. I had coil issues when I first got my boat. I think I'm on coil 2 or 3. The current one has been in there for 2 or 3 years though.
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"Jim" S/V "Ahoi" 1967 Islander 29 Harbor Island, San Diego 2/7/67 A4 Engine Block date
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#10
IP: 161.213.49.150
12-11-2013, 03:36 PM
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Maybe Universal decided to do a production run of say 250 or 500 A4s and put out a bid for that number of coils, which Delco won, and installed them during "that" time frame. They are starting to fail about now so that is why we are noticing so many of them.
Then again maybe not. TRUE GRIT Last edited by JOHN COOKSON; 12-12-2013 at 11:45 AM.
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#11
IP: 75.142.49.80
12-11-2013, 10:32 PM
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Mine didn't 'fail' it just measured 7.1 ohm.
"They are starting to fail about now" 40+ years, not too bad. they don't make em like they used to
__________________
"Halcyon" 36' custom sloop. 8 tons. Glass over strip plank mahoghany. Spruce mast and booms, launched 1969. Original A4.
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#12
IP: 24.152.131.153
12-11-2013, 10:39 PM
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Simon,
Is that 7.1Ω consistent cold and hot??
__________________
Neil 1977 Catalina 30 San Pedro, California prior boats 1987 Westsail 32, 1970 Catalina 22 Had my hands in a few others
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#13
IP: 174.67.229.161
12-13-2013, 04:28 AM
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>Is that 7.1Ω consistent cold and hot??
that I cannot answer. And now its of in the spare spares box 
__________________
"Halcyon" 36' custom sloop. 8 tons. Glass over strip plank mahoghany. Spruce mast and booms, launched 1969. Original A4.
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#14
IP: 24.152.131.153
12-13-2013, 09:13 AM
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It was a question of curiosity rather than diagnosis. I do not trust that coil though, the measurement is wacky.
I recommend storing it in a zip lock bag in case it decides to leak oil.
__________________
Neil 1977 Catalina 30 San Pedro, California prior boats 1987 Westsail 32, 1970 Catalina 22 Had my hands in a few others
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