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  #1  
Old 1st March 2010
tarathatcher tarathatcher is offline
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Smile 1988 1200 Sporty Ignition Module

I currently have 2 ignition modules in my garage that will fit my 88 Sporty 1200. Which one is better? I can't find much info other than the rev limiters are different... the first one is part #32597-96. 6800 rev limiter. The second one is: part #32420-87B. 8000 rev limiter. Is the rev limiter the only difference? I'm trying to determine which one I should use. My Sporty's engine is a stock 1200 (only 8,000 miles) with Andrews V4 cams and Vance and Hines Straight Shots exhaust. Any help would be appreciated.

Thanks,

Tara
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  #2  
Old 1st March 2010
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There normally is an additional marking on the module that tells you what curve it uses. E.g. on the 32420-87B that I am using in my 93 1200 the additional marks include "1200-K". The "K" means the module uses the K curve.
Does the 32597-96 have any additional printed stuff on it? Unless you have already changed some wiring on your 88, you may need a different plug (or harness 32408-90) to fit that module on your bike.
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Old 1st March 2010
tarathatcher tarathatcher is offline
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the 32597-96 module does have 1200-KSE stamped on it. I have the adapter harness sitting on my table, so I will be able to hook it up ok.
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  #4  
Old 1st March 2010
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Quote:
Originally Posted by tarathatcher View Post
the 32597-96 module does have 1200-KSE stamped on it. I have the adapter harness sitting on my table, so I will be able to hook it up ok.
This one is a SE module. The other one sounds like a stock module.
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  #5  
Old 1st March 2010
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Quote:
Originally Posted by tarathatcher View Post
the 32597-96 module does have 1200-KSE stamped on it.
Then it uses the K curve as well (max advance at 40 degrees). Thus, the only difference between your modules is the rev limit, I believe.

If you decide to run the 32420-87B, I might be interested in the 32597-96 if you want to sell.


Quote:
Originally Posted by biknut
This one is a SE module. The other one sounds like a stock module.
No, 32420-87B is also a SE module.
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  #6  
Old 2nd March 2010
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williamv1203 williamv1203 is offline
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Use the 8k module...
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  #7  
Old 6th March 2010
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My stock module failed in the first 2 years.
The SE module I bought for it is still running strong, 20 years later.
The 'long harness' was not in stock at the dealer, so I just soldered the wires together.
I'm not looking forward to the next failure.
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Old 18th March 2010
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90sportster 90sportster is offline
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I did a 883/1200 conversion on my 90 sportster.I used ignition module part # 32432-91A.
It uses the "J" curve and has a 6800 rev limiter. If you do a little research, you will find this is one of the best HD ignition modules to use for a 1200.
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Old 18th March 2010
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Jafa39 Jafa39 is offline
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I wouldn't use the 8k rpm module......Sporties don't last too long if you over-rev them...tops of pistons attempt to become space junk usually...the 6800 rpm limit has been worked out by Harley to keep all the expensive parts inside the cases.

In my experience this is the same for all long-stroke motors.....piston speed is too high to go sodding about with rev limiters...oh lots of people want the increased limit buts its just the usual pissing match...a lot has to be done to a H-D (or a Ducati for that matter) before you can safely exceed the rev limit...
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  #10  
Old 19th March 2010
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williamv1203 williamv1203 is offline
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Originally Posted by Jafa39 View Post
I wouldn't use the 8k rpm module......Sporties don't last too long if you over-rev them...tops of pistons attempt to become space junk usually...the 6800 rpm limit has been worked out by Harley to keep all the expensive parts inside the cases.

In my experience this is the same for all long-stroke motors.....piston speed is too high to go sodding about with rev limiters...oh lots of people want the increased limit buts its just the usual pissing match... a lot has to be done to a H-D (or a Ducati for that matter) before you can safely exceed the rev limit...
Just because it's capable, doesn't mean you have to go there...
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