Topic: Replacement Coils

[Hyseman]

I have a 73 CB750 and need to replace the coil because of a broken plug wire. I found a place that will sell me 1 of 2 types.
Type 1 has the plug wires as part of the coil.
Type 2 has the plug wires that are seperate.
Other than ease of replacing wires is there any other advantage to one  or the other? 

[damn_yankee]

I saw somewhere on this site there is a way to replace damaged wires by carefully drilling out the old wire in the coil and inserting a new plug wire. Do a search.
If the coils are still good, spark plug wire is a lot cheaper.

[dusterdude]

I have a 73 CB750 and need to replace the coil because of a broken plug wire. I found a place that will sell me 1 of 2 types.
Type 1 has the plug wires as part of the coil.
Type 2 has the plug wires that are seperate.
Other than ease of replacing wires is there any other advantage to one or the other?

either will work but,the type with the removeable wire might be a 3 ohm coil,our stock coils are 5 ohm.i have 3 ohm coils on my bike now with no ill effects,some say you see premature wear of the points with this setup.like i said so far thats not an issue.if the molded coil is in good shape you might just want to go that way.

[cb(r)]

I had a 92 yamaha fzr that I had a similar problem.   I milled into the coil and inserted new and better wires.  It  just had prong to fix my wires to. not a threaded prong like I thought.  it fired better though.  matter of fact I have the coil off my cb 550 with two broken wires.  I might just cut into them if I have time today.  I will keep you updated.  I have no camera but once I do I will send pics.

[cb(r)]

warning do not cut into coil from a 74 cb 550 wires are soldered in and very difficult to clean replace and resolder.

check out this site for coils   http://www.z1enterprises.com/

If it were me I would go with the coil pack that has the correct ohm rating as your bike  and changeable wires.

[Hyseman]

Can the boots be changed if the coil is good?

[eldar]

Boots only help if the wire is good.

You can go to www.partsnmore.com and get new coils for a 1979 cb750 that uses replaceable wires. They are $26. Unless you have a good electronic ign, these coils are absolutely fine. So for about $40 each, you could have new coils, wires, and boots which will outperform the old original coils anyways.

[Einyodeler]

Partsnmore also sells the molded in wire 5 ohm coils for $30 US       Part # 17-6822

https://www.partsnmore.com/cat_index.php?model=cb750_sohc&category=electrical

[Hyseman]

What year coils can I use on my 73 CB750?
What other parts are interchangeable?

[dusterdude]

you can pretty much use any jap coil i think,i have yamaha coils on my bike

[SteveD CB500F]

Some folk here use VFR coils or DOHC 750/900 coils.

You may have to fab a mounting bracket.

[Hyseman]

Thanks for all the help. I am new to this and this is my 1st bike that I have owned. So if there are any more help sites for the CB750 that I can check out please let me know.
Anyone near the Akron, Ohio area?

[ohiocaferacer]

Few hours away......Columbus, Ohio!!

Later,
Greg
www.OHIOCAFERACERS.com

[SteveD CB500F]

You won't need any other help sites ...  

But if you are a glutton for punishment, you can take a look at:

www.honda-sohc.co.uk (this is a UK site for these bikes - with some crossover membership)

www.hondachopper.com

http://oldmanhonda.com/MC/MC.html

www.oldbikebarn.com

www.satanicmechanic.de

more in the FAQs

[dusterdude]

he said glutton...huh huh