Search found 37 matches
- Tue Aug 30, 2011 1:11 pm
- Forum: Technical Discussion
- Topic: GM HEI: Cheap and Extremely Effective Ignition Upgrade
- Replies: 406
- Views: 377038
Re: GM HEI: Cheap and Extremely Effective Ignition Upgrade
I paid about $15 per module, and $20 per coil at a retail store. I was corresponding with someone who was sourcing igniters from a salvage yard, and he couldn't get the ignition working after trying several igniters. Finally he bought a new one and it ran great (this was on a Kaw twin, which uses on...
- Fri Aug 26, 2011 2:09 pm
- Forum: Technical Discussion
- Topic: GM HEI: Cheap and Extremely Effective Ignition Upgrade
- Replies: 406
- Views: 377038
Re: GM HEI: Cheap and Extremely Effective Ignition Upgrade
Yes, I think you basically want to get as close as possible to get the best signal, but the mechanical contact is the deciding factor (plus a safety margin). Once you know where the distance will be set, you design the electronics around that (based on the signal generated by that setting). That's h...
- Thu Aug 25, 2011 4:02 pm
- Forum: Technical Discussion
- Topic: GM HEI: Cheap and Extremely Effective Ignition Upgrade
- Replies: 406
- Views: 377038
Re: GM HEI: Cheap and Extremely Effective Ignition Upgrade
Thanks for he welcome :D Just for reference, the crosstalk I refer to is not electrical crosstalk... such as inductive noise, or RF noise, from one wire to another. It's actually mechanical/magnetic crosstalk created by the "reluctance" of one pickup, transmitted through the iron rotor, an...
- Wed Aug 24, 2011 9:30 am
- Forum: Technical Discussion
- Topic: GM HEI: Cheap and Extremely Effective Ignition Upgrade
- Replies: 406
- Views: 377038
Re: GM HEI: Cheap and Extremely Effective Ignition Upgrade
I'm not sure when you read my post, but I had to edit it after reviewing my notes on the 7-pin modules. I then realized why the extra parts are needed with the 7-pin setup, which made me recall some emails on it... my memory has always been somewhat sketchy... I hope it improves with age :lol: :(
- Tue Aug 23, 2011 10:52 pm
- Forum: Technical Discussion
- Topic: GM HEI: Cheap and Extremely Effective Ignition Upgrade
- Replies: 406
- Views: 377038
Re: GM HEI: Cheap and Extremely Effective Ignition Upgrade
Hi Pinhead, On the 4-pin module design, the extra DC voltage (for the startup boost) is applied directly to the input terminal. That is the G terminal on the 4-pin module. I realize it seems counterintuitive to apply a steady DC voltage to an input which is expecting an AC input. I am using a little...
- Tue Aug 23, 2011 6:12 pm
- Forum: Technical Discussion
- Topic: GM HEI: Cheap and Extremely Effective Ignition Upgrade
- Replies: 406
- Views: 377038
Re: GM HEI: Cheap and Extremely Effective Ignition Upgrade
Here are some of the notes I took on the 750 ignitions in case it helps to identify if the 650 is the same. http://home.comcast.net/~loudgpz/GPZweb/Ignition/CBstockIgnitionNotes.txt http://home.comcast.net/~loudgpz/GPZweb/Ignition/CBreluctor.gif http://home.comcast.net/~loudgpz/GPZweb/Ignition/CBrel...
- Tue Aug 23, 2011 6:04 pm
- Forum: Technical Discussion
- Topic: GM HEI: Cheap and Extremely Effective Ignition Upgrade
- Replies: 406
- Views: 377038
Re: GM HEI: Cheap and Extremely Effective Ignition Upgrade
Hi all, Thought I'd post a quick note... In order to get the proper dwell for the GM coils, the pickups have to be referenced to ground. The problem with this is that the signal is then a little weak for starting if the crank is turning too slowly. Some bikes will have the problem, some will not. Ot...