Author Topic: V50 II - New Coils?  (Read 2091 times)

Offline Diploman

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V50 II - New Coils?
« on: August 18, 2017, 12:53:48 PM »
The trial/glitch-resolving process for my recently-rolled out 1980 V50 II update/cafe is still underway.  With about 600 miles on the bike thus far, there are questions about the jetting, footpegs and paint for the fuel tank, but I particularly want to solicit thoughts and advice about the 37-year old OEM Denso coils.  They appear to be working OK, but I have read that coils degrade over time and should be updated to ensure optimum performance.  Many early-smallblock restorers/modernizers claim that new coils are among the most significant positive upgrades to their bikes.   My question:  If the OEM Denso coils seem to be operating reasonably well, is there an advantage to replacing them with a similar modern version, such as the ones carried by MG Cycle, or another brand such as Dyna or Power Arc?

http://www.mgcycle.com/index.php?main_page=product_info&cPath=37_157&products_id=2849

Thanks in advance, Will

« Last Edit: August 19, 2017, 09:08:00 AM by Diploman »
1980 V50 II, lightly cafe'd, much modernized
1983 SP 1000 NT (Under Upgrade/Modification)
2015 KTM 390 Duke

Offline Chuck in Indiana

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Re: V50 II - New Coils?
« Reply #1 on: August 18, 2017, 03:29:17 PM »
I had the same quandary with the aero engine. The OEM ND coils were working fine.. but.. Guzziology doesn't have anything good to say about them.. and they are 30 years old, after all.
I went with Dyna coils. No difference in performance that I can tell, but they are new.
Chuck in (Elwood) Indiana/sometimes SoCal

02 Scura RC
87 AeroLario
79 G5
95 Skorpion tour
 
I think senility is going to be a fairly smooth transition for me..

Offline Antietam Classic Cycle

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Re: V50 II - New Coils?
« Reply #2 on: August 18, 2017, 08:34:46 PM »
You want to be sure whatever coils you use are compatible with the o.e. Bosch electronic ignition.
Charlie
http://www.AntietamClassicCycle.com
'69 V700
'69 Ambassador
'71 Ambassador
'73 Eldorado
'74 850-T
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Offline Psychopasta

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Re: V50 II - New Coils?
« Reply #3 on: August 19, 2017, 01:04:05 PM »
I've gone with Dyna coils on my rebuild of a Monza. It's always difficult to rationalize replacing something that is working though. Dave Richardson's advice in Guzziology is to throw the OEM coils as far away as you can. My guess is Dave would say that you're going to change them now of later  :azn:

- Pasta
V50 Monza 1981
Triumph Tiger 2012
Ducati Diavel 2014
Triumph Bonneville Bobber 2017

Wildgoose Chase Moto Guzzi

Re: V50 II - New Coils?
« Reply #3 on: August 19, 2017, 01:04:05 PM »

Offline pat80flh

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Re: V50 II - New Coils?
« Reply #4 on: August 20, 2017, 06:03:54 AM »
My 84 V65C project had the original coils with built in spark plug wires(can't remember the brand right now), and a Dyna ignition.

I might have run the coils but not 30 year old plug wires.

Coil mounts under the tank had to be modified to make Dyna coils fit.
00 Bassa
80 FLH (in rehab)
84 V65C
75 850T prject

Offline Chuck in Indiana

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Re: V50 II - New Coils?
« Reply #5 on: August 21, 2017, 07:13:23 PM »
I made brackets out of 3/32" steel to mount the Dynas to the factory coil mounts. This is a quicky prototype out of 1/16" aluminum, but you get the idea.
022 by Charles Stottlemyer, on Flickr
Chuck in (Elwood) Indiana/sometimes SoCal

02 Scura RC
87 AeroLario
79 G5
95 Skorpion tour
 
I think senility is going to be a fairly smooth transition for me..

Offline Diploman

  • "The future just ain't what it used to be." Yogi
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Re: V50 II - New Coils?
« Reply #6 on: August 22, 2017, 09:49:48 AM »
Thanks Chuck and all who commented.  I'm convinced - new coils to be ordered!
1980 V50 II, lightly cafe'd, much modernized
1983 SP 1000 NT (Under Upgrade/Modification)
2015 KTM 390 Duke


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