'82 GPz incorrect coils?

I'm having power loss issues with my 82 GPz750 so I was testing my ignition system. I'm getting a reading of approx 5Ω when the FSM specifies 3Ω. I know you can get 5Ω coils so I don't know if these are bad or if they have been changed and if they might be part of my issue.

I'm also trying to figure out if I'm having issues with the rest of my ignition. the pickup coils are showing the correct resistance but the ground readings are strange, I've checked a couple of times and sometimes it shows open and other times I'm getting a resistance reading. I haven't tested with heat yet.

I'm a bit of a dope when it comes to electrical and so I just want to make sure I'm reading things right.I haven't tested my ingniter yet because i was confused about the procedure.

I think 5 Ohm were for the earlier points ignition, later transistorised type had lower resistance coils. I had one coil go on mine, using a meter to test resistances isn't a certain way to tell a bad coil.

I've noticed the pick-ups resistance outside FSM specs but they work fine. The 4 way Hitachi mini block connt4ector and terminals can be easily changed.

New 7mm non resistor HT wire and caps usually makes a difference on old bikes, easy job.

So, I most likely have coils for a points system without the points. That doesn't sound good. I didn't think to check the condition of the connectors themselves but they didn't seem to show any indication off damage.

I've checked a couple of times and sometimes it shows open and other times I'm getting a resistance reading

...I didn't think to check the condition of the connectors themselves but they didn't seem to show any indication off damage

:side:

No eBay APP ID and/or Cert ID defined in Kunena configurationTouché.

I'll find some connectors then. Should I replace the coils with 3Ω or maybe get a Maxi-dwell system?

I had one like that in the 70's. I still have it laying in my junk pile. GM style points, etc. The switch broke early on. I'd get a Dyna S and be done with it. About the same price.
Steve

swest wrote: I had one like that in the 70's. I still have it laying in my junk pile. GM style points, etc. The switch broke early on. I'd get a Dyna S and be done with it. About the same price.
Steve

The big question is would I be done with it?

I put mine on two years ago. I still carry the points plate and cam just because I like to be prepared. It's under my seat with spare coils. I don't think I'll ever be done with my bike. Not because it's undependable, I like adding more goodies. :woohoo:
Steve

I'm still concerned that the ignition coils are wrong.

Do you have to do anything igniter wise?

It bypasses the igniter. It will work with 3-5 OHM coils.
Steve

Are you measuring resistance by probing through the plug caps? Many plug caps have a built in resistor. Sometimes these resistors break down. Always measure coil resistance with plug caps - or better yet caps plus wires - removed.

swest wrote: It bypasses the igniter. It will work with 3-5 OHM coils.
Steve

Well then, sign me up.