Name that coil

Hotshoe · Post by **Hotshoe** » Thu Jun 23, 2011 9:30 pm

Found 3 of these coils while digging around in my pal's stash of old Honda stuff in CA last week.
The model designator number looks like 028, can anyone identify what they came from?
The red plug wires make me think they might be exotic.

bikedoctor99 · Post by **bikedoctor99** » Thu Jun 23, 2011 11:11 pm

I'm almost certain that the coils you have are 6 volt racing sparkers for the CB92 with 360 crank.
Used them on my race cb160 12v with a mopar ballast resistor- always worked fine!
A friend also used them on a cb77 with 6v total loss battery- he had twin plugs and that coil was ideal, both leads sparked simultaneously!

davomoto · Post by **davomoto** » Fri Jun 24, 2011 9:22 am

028 is the center code for an S90. That's a single, so I don't know why the would be 2 high tension leads. Very cool find!

Davo

Hotshoe · Post by **Hotshoe** » Fri Jun 24, 2011 6:14 pm

Thanks for the feed back guys, had a some time this morning (stock market untradable again) so I did a bit of on-line research and found a couple of interesting web sites:

http://www.vf750fd.com/Joep_Kortekaas/1962.html#RC110 Honda's race history

http://www.johnoldfield.co.uk/stock.htm List of Honda model and product numbers

As you said Davo, the 028 middle code is for S90s and CL100s which are both single cylinder/plug bikes and is obviously not a match for these 2 cylinder/plug coils.
The middle numbers on the coils we found were all smugged, the one I photoed was the clearest - it's 02 with an unclear last number that has a round bottom (and female threads, it's all starting to make sense?).
Anyway.... in digging thru the Oldfield list I found the CR112 with middle code 026 that I wasn't familar with but sort of fit the trail of evidence.
In Steve's Honda racing history I found out the CR112 was a DOHC 50cc twin cylinder version of the CR110/111 DOHC 50cc singles that I'm very familiar with.
So, without too much of a stretch I think those are CR112 coils which is pretty darn cool if it's true!
Regards, CW

bikedoctor99 · Post by **bikedoctor99** » Fri Jun 24, 2011 10:05 pm

CR112 was not a 360 crank and would not have used twin lead coils.
I looked at my coil this morning, but didn't have enough time to pull it for an examination of part numbers, however Nippon Denso is moulded into the sides of the coil.

Hotshoe · Post by **Hotshoe** » Sat Jun 25, 2011 12:24 pm

bikedoctor99 wrote:CR112 was not a 360 crank and would not have used twin lead coils.
I looked at my coil this morning, but didn't have enough time to pull it for an examination of part numbers, however Nippon Denso is moulded into the sides of the coil.

Admittedly my conclusion was a stretch and it's no big thing either way but your response has me a little confused.
Seems to me if the CR112 was a twin and wasn't a 360 crank it would be more likely to have separate coils/plug wires etc.
Could you explain?
Do you have a CR112?

Hotshoe · Post by **Hotshoe** » Sat Jun 25, 2011 12:55 pm

It occured to me that some of you Forum purists might be wondering what connection to 305's these coils may have.
I neglicted to mention that the 305 flattracker we got running and rode for the first time in over 30 years has these coils on it.
Great fun I might add!!!

Honda305.com Forum

honda305.com Forum

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