Coil Replacement
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one more thing does that guy from Boretech that offers the electronic ignition system still around? I remember on the old site cb450DOHC group he offered a discount for members.....did he come on board with us or just bailed out altogether?
Bill Moeller from BoreTec was not a member of the DOHC as i remember. He was contacted by Polishbeer and a discount deal was made at that time. When I last bought my BoreTec 450 EI last fall, Bill still had a good supply. I will assume the DOHC discount is still active but its best to contact Bill for details from website
http://www.bore-tech.com/Vintage Motorcycle Ignitions.html
As for my BoreTec EI install, I paid $340something without the Dyna coils. I believe this is money well spent! The product and instructions are easy straightforeward. The hardest part is finding a place to locate the blackbox. Its really SLICK that you can test/set the system (with 9v battery) prior to starting the engine. danWI
http://www.bore-tech.com/Vintage Motorcycle Ignitions.html
As for my BoreTec EI install, I paid $340something without the Dyna coils. I believe this is money well spent! The product and instructions are easy straightforeward. The hardest part is finding a place to locate the blackbox. Its really SLICK that you can test/set the system (with 9v battery) prior to starting the engine. danWI
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1,638 Posts
Black spark plug wiring is now back in stock!
Funny thing is that I went to a NAPA and an Autozone a couple days ago they thought I was speaking gibberish when I said I just wanted some spark plug wire...
Funny thing is that I went to a NAPA and an Autozone a couple days ago they thought I was speaking gibberish when I said I just wanted some spark plug wire...
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89 Posts
You are liable to get anything going to autozone...i keep my purchases to very simple things there .....not that the staff is bad but alot of the employees never worked on anything at all before working there. When i was coming up and you went to a parts store the guy at the counter was dirty half the time from working on something in the back room or out back....lol.krukster86 said:
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1,638 Posts
Works great on my CB360!
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1,612 Posts
I love the idea of grounding the ignition directly to the battery on a freshly powdered frame, makes perfect sense. I was chasing my tail after powdercoating my RD and not getting a good grounding. And I didnt wanna spoil the fresh coat by rubbing a bit off either. Powdercoat is the perfect insulator 
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I'm new to this whole electrical scene. How do I go about doing this ground wire? Literally, just get a 10 gauge wire and connect it to the negative terminal of the battery and then to the condenser? Where do I connect it to the coils and the other parts? Just on the base or on one of the wires. A comment would be greatly appreciated. I really enjoyed your post and found it very helpful!
Josh
Josh
The direct ground is a good idea. For an added security factor connect the bike's main hot lead to the battery post rather than to the hot side solenoid post. I have had two (maybe three) of the heavy battery-to-solenoid leads snap off at the right angle bend of the battery end connector, and I replaced one with a connector cannibalized from another 500T which had been made by a previous owner, so he probably had the same problem. With the main power feed connected to the battery, if the solenoid connector fails all you lose is the ability to use the electric starter.
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6,495 Posts
Yep. that's about it. Connect to the coils on one of the bolts that pass through the frame.joshuatyler1 said:
My frame had been powdercoated, so I knew I couldn't count on normal grounding.
I also ran a ground wire to the handlebar clamp, to make sure the left/right switches worked ok.
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2 Posts
Just finished this up last week, and the bike is running better than ever. I'll post some pics later. Being a medical student living in an apartment, I don't have an actual garage or many tools or scrap metal. I ended up using an old utah license plate for the new coil mounts. I actually had room for my condenser using the original mount. Thanks a bunch for the help!
Josh
Josh
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2 Posts
If I want to run a Dyna coil on my CB450, which is the correct model? I believe its DC3-1 (3 ohm). Can anyone confirm?
I am planning on running a Dyna electronic ignition. (not sure if that makes a difference)
Would I need an additional resistor in line to change the resistance so it doesn't overwhelm the charging system? (I've heard that 3 ohm coils may do that)
I appreciate any advice....
example model numbers:
http://www.dynoman.net/ignition/dynacoils.html
I am planning on running a Dyna electronic ignition. (not sure if that makes a difference)
Would I need an additional resistor in line to change the resistance so it doesn't overwhelm the charging system? (I've heard that 3 ohm coils may do that)
I appreciate any advice....
example model numbers:
http://www.dynoman.net/ignition/dynacoils.html
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357 Posts
Just did the coil replacement as described today, worked great. It took a while, but i put the condenser between the coils. Tight fit, but worth it.
Thanks,
Allen
Thanks,
Allen
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363 Posts
I have a 73(title)? cl450 sn 50 series, although I believe it was built in late 71. I was having issues loosing cylinders
Brief history:
I got the bike as a nearly complete project.. PO seemed to have a pretty good handle on it, but I think he lost interest, got discouraged..
I just upgraded per bills spec, fit the condensers (xs650 as well) between the coils, and soldered them in directly. mounted to the aluminum strap the coil is connected to. For bonus points I ran both ground and +12 from the battery switched with a relay. I enjoy near 0 voltage loss loss at the coils now. I have not figured out a mounting solution for the relay as of yet, so its pretty much just jammed between the coils.... this seems to have fixed most of my issues, bike runs much better.
Brief history:
I got the bike as a nearly complete project.. PO seemed to have a pretty good handle on it, but I think he lost interest, got discouraged..
I just upgraded per bills spec, fit the condensers (xs650 as well) between the coils, and soldered them in directly. mounted to the aluminum strap the coil is connected to. For bonus points I ran both ground and +12 from the battery switched with a relay. I enjoy near 0 voltage loss loss at the coils now. I have not figured out a mounting solution for the relay as of yet, so its pretty much just jammed between the coils.... this seems to have fixed most of my issues, bike runs much better.
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