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difference between ignitors

  • Thread starter Thread starter dark7068
  • Start date Start date
D

dark7068

Guest
I put my 85 550 motor in my 82 Katana, and wandering if I could just swap in the signal generator from the Katana 550 into the 85 motor instead of butchering my Katana harness to get the proper timing? Also is the R/R the same between the 2 or does that need rewiring as well.

or am I stuck with splicing the harness and wiring in the 85 ignitor.
 
Some time during the '82 model year, some of the models switched from mechanical ignition advance to electronic in the ignigor.

Check to see if your '82 bike still has a mechanical ignition advance on the end of the crank.

If it does, you will have to disable it to use the new ignitor.

.
 
dark7068 said:
cuz you didn't answer the first one :)
Click to expand...

so if you dont get an answer to a thread straight away then you will post multiple threads exactly the same until you do get an answer?

never thought that the person who may have the answer hasn't seen the thread yet? :confused:
 
sorry, you obviously don't have an answer, just feel like ****ing on someone tonite, sorry to bother you. wont happen again
 
now that is out of the way..

I wired in my 85s ignitor, and I get NO spark (but I did get spark just wiring up the 85 motor to the 82s ignitor but wouldn't run). will I need to wire in the 85s R/R as well? the 85s ignitor has 1 wire that goes into the R/R according to my wiring diagram (havent done it yet), would that be the reason for no spark at the plugs or my ignitor toast. It has had problems starting before which I thought was ignitor but after awhile it would fire and run half the time and have decent idle,but would not rev though.
 
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dark7068 said:
I wired in my 85s ignitor, and I get NO spark (but I did get spark just wiring up the 85 motor to the 82s ignitor but wouldn't run). will I need to wire in the 85s R/R as well?
Click to expand...
Unless your '82 has a fried R/R, it won't matter which one is connected. The only thing that the R/R has to do with the ignitor is to provide power. The ignitor usually gets its power through the IGNITION fuse, along with the coils. The R/R puts its power into the system before the ignition switch, so yeah, there is a vague connection, but I don't know why it would show as "direct".

I just went back to the beginning of this thread and realized what was happening here. Correct me if I am wrong, but isn't the '85 engine a 4-valve engine with the siamesed carbs? The '82 engine is a 2-valve engine with four separate carbs (not that the carb configuration matters here). If this is the case, you will definitely want to keep the '85 ignitor with the '85 engine, but the R/R should not matter.

.
 
ok, thanx.. I will see if I can try my friends ignitor this week to see if that's my problem.
 
To run the '85 engine you need the '85 ignitor and signal generators. The later engine does not have a mechanical advance, and the later ignitor takes this into account. If you are not getting spark with the '85 ignitor, it's either wired wrong or fried. That particular model ignitor is not very robust, unlike most other GS igniters.

If you don't get an answer to your first post, bump the thread back to the top by responding to your own thread. This is a much better way to get responses than posting a redundant thread.
 
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Sounds like a candidate for a Dyna S electronic ignition. Does anyone know if it will fit the 85 550?
 
got spark now, the ground wire wasn't good enough on the ignitor.. but still pops and backfires..
 
It is quite possible that you have advance from both the mechanical advance on the end of your crankshaft as well as the advance in the igniter. This would effectively double the initial advance, yielding the results you are seeing/hearing. If you have a timing light you can verify this.
If you can find a way to disable the mechanical advance on the crankshaft (keep it from working) you may be able to use what you have.
 
im using the ignitor from the 85 motor. a timing light wont work because it wont run :(
 
O.K., I'll say this. There is an initial advance built into the ignitor. There is also an initial advance built into the mechanical unit on the end of the crankshaft. IDK the actual numbers, but let's say they each start at 20 degrees before TDC. Adding the two gives 40 degrees advance, which will pop through the exhaust as you are observing.
You really need a signal generator from an engine that has the advance built into the igniter, as Nessism already stated. It is "possible" that a unit from a different engine will also work, but IDK.
 
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