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300ex cdi box same as 400ex?

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Old Jan 4, 2004 | 07:50 PM
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Default 300ex cdi box same as 400ex?

I have seen some 400ex aftermarket cdi boxes on ebay, the plugs look the same,will it work with the 300ex,or is the timing,advance and such too different to work with the 300ex?
 
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Old Jan 4, 2004 | 10:12 PM
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Default 300ex cdi box same as 400ex?

I don't think it will work.
 
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Old Jan 5, 2004 | 09:36 AM
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Default 300ex cdi box same as 400ex?

Any one else? any Honda mechanics out there? I realize they are two different quads, but the cdi boxes are alomst identical, right down to the plugs for the wiring harness, so I was curious about the major differences,such as spark advance curve, rpm limits, etc. to see if it was a viable swap. Hope to hear from you tech masters soon !! thanks in advance.
 
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Old Jan 5, 2004 | 10:17 PM
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Default 300ex cdi box same as 400ex?

i don't think they will work either. it should fit right in, but i bet it won't start. find someone with a 400ex in your area and try it out.
 
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Old Jan 6, 2004 | 04:47 PM
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Default 300ex cdi box same as 400ex?

No they do not interchange
 
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Old Jan 6, 2004 | 06:13 PM
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Default 300ex cdi box same as 400ex?

Thanks for all the replies, just looking to save some money, some real cheap ones on ebay lately.
 
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