BritBike Forum logo
BritBike SponsorBritBike SponsorBritBike SponsorBritBike SponsorBritBike SponsorBritBike SponsorBritBike SponsorThe Bonneville ShopBritBike Sponsor
Upgrade to: Premium Membership | Premium Life Membership | Vendor Membership | Site Sponsor Membership
ShoutChat Box
Comment Guidelines: Do post respectful and insightful comments.
Buy BritBike staff a coffee
Buy BritBike's staff a coffeeStill here since 1996 serving BritBike enthusiasts..
Search eBay for motorcycle parts in following countries
Australia, Canada, France, Holland, Italy, United Kingdom, USA
Random Gallery photo
Member Spotlight
Mike-71-650
Mike-71-650
Al, Birmingham
Posts: 34
Joined: January 2015
Show All Member Profiles 
Newest Members
longstroke, Lovatomi, Gary Hawthorn, Marcel Fekete, Changaroo
10896 Registered Users
Top Posters(30 Days)
franko 131
DavidP 73
quinten 68
NickL 59
Popular Topics(Views)
1,043,988 mail-order LSR
a word from..
Forum Statistics
Forums34
Topics68,005
Posts682,397
Members10,896
Most Online14,755
May 5th, 2019
Who's Online Now
62 registered members (AML), 472 guests, and 885 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
True Or False #142127 05/28/08 1:14 am
Joined: Aug 2005
Posts: 57
C
camshaft1 Offline OP
BritBike Forum member
OP Offline
BritBike Forum member
C
Joined: Aug 2005
Posts: 57
I have a 68 Bonnie with Boyer Electronic ignition. When setting the idle of each carburetor individually, Is it ok to unplug one spark plug at the time without fear of ruining the Boyer black box as somebody told me????
Thanks a lot.
JJC

Support Your #1 BritBike Forum!

Check out British motorcycles for sale:
British Motorcycles on e-Bay UK
British motorcycles on e-Bay North America
Re: True Or False #142128 05/28/08 2:04 am
Joined: Aug 2001
Posts: 4,847
Mark Z Offline
BritBike Forum member
Offline
BritBike Forum member
Joined: Aug 2001
Posts: 4,847
In a previous thread, it was pointed out (by Mr. Healy, I believe) that pulling a spark plug wire may cause damage to your coil, and this is with breaker point ignition as well as EI. Tension builds up in the secondary coil which is seeking a path to ground, which it may find through some weakened insulation, especially in an older coil. This will in turn cause more damage to the coil.

This practice is ok if you ground the HT lead to be disabled. You may get some suggestions on exactly how to do this.


Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.
Re: True Or False #142129 05/28/08 7:07 am
Joined: Aug 2007
Posts: 4,493
Blapper Offline
BritBike Forum member
Offline
BritBike Forum member
Joined: Aug 2007
Posts: 4,493
I agree 100% with Mark above, plus why do you need to do that anyway - I never have?

Blapper redwine

Re: True Or False #142130 05/28/08 9:19 am
Joined: Oct 2003
Posts: 3,873
D
dave jones Online Content
BritBike Forum member
Online Content
BritBike Forum member
D
Joined: Oct 2003
Posts: 3,873
You can ground the removed ht lead by fitting another spark plug into the cap and resting it on the cylinder head, making sure it stays there.

dave

Re: True Or False #142131 05/28/08 7:51 pm
Joined: Feb 2008
Posts: 163
dale karger Offline
BritBike Forum member
Offline
BritBike Forum member
Joined: Feb 2008
Posts: 163
make a jumper wire witha sparkplug cap on one end and an alligator clip on the other so you get a positive grounding. if you do lay the sparkplug on head make sure its far from the sparkplug hole. there is still gas in the carbs and it is possible for the gas vapor escaping to be ignited by the sparking plug. that'll scare the crap out of you at the very least.


76 T140V
79 Honda CB 650
79 Yamaha 175 Enduro
68 Chevy Impala Convert
- - - - - - - - - - - - - - - - -
Re: True Or False #142132 05/28/08 10:30 pm
Joined: Oct 2003
Posts: 3,873
D
dave jones Online Content
BritBike Forum member
Online Content
BritBike Forum member
D
Joined: Oct 2003
Posts: 3,873
You don't take the plugs out of the head. You use an extra plug.
Dave

Re: True Or False #142133 05/28/08 11:02 pm
Joined: Mar 2005
Posts: 446
Jethro Offline
BritBike Forum member
Offline
BritBike Forum member
Joined: Mar 2005
Posts: 446
Lot of good posts to this, but I want to also mention that for ME... I haven't had to do this. I have a 71 650 engine, and am running dual VM32 Mikunis. I have a "balance" tube connecting the two carbs. I really think this tube has added a lot to low rpm idling. In fact, I searched here on the archives in reference to a balance tube. Anyway. Both carbs are set the same for jets, etc, and both slides are properly adjusted, and with the balance tube there, the bike runs damn well just as is. Do you have a problem that may be prompting the need to dial in your carbs seperately?

Re: True Or False #142134 05/29/08 6:42 am
Joined: Aug 2007
Posts: 4,493
Blapper Offline
BritBike Forum member
Offline
BritBike Forum member
Joined: Aug 2007
Posts: 4,493
Anybody there?


Moderated by  John Healy 

Home | Sponsors | Newsletter | Regalia | Calendar | Bike Project | BritBike Museum | Spiders Cartoons | DVD- Manuals & Parts books
Upgrade to: Premium Membership | Premium Life Membership | Vendor Membership | Site Sponsor Membership
Powered by UBB.threads™ PHP Forum Software 7.7.3