what am I getting into?,84 engine into an 86

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Joined: Sun Nov 30, 2014 2:30 am
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Motorcycle: 1986 gl1200a aspencade . Honda xl600r, '68 z50, '82z50, '80cx500c, '00 klr250

what am I getting into?,84 engine into an 86

Post by deanbw » Sat Dec 13, 2014 1:56 pm

Hello all,
I had an earlier post asking about putting an 84 engine into my 86. I was told it would fit. I have now read a couple things that have me concerned. I have read the starter is different with a different mount which made honda move the mount bolt to the frame/engine down there. I know the stator / starter take -up is different and pick up location is different, no big. I now hear the 86 has 6 wire plug and the 84 is 4 wire, now the 86 I read about was fuel injected so the 6 wire my be for f.i. only. So botton line to this rambling is this.....does anyone have any insight into this, am I worried for no reason or has anyone done this swap and if so what did you find?
My engine is ok it's just that the 84 is half the mileage with 37,000 so I thought why not. If its too much trouble then I guess I have an engine for sale, came with a 6 month warranty, has about 5.5 months left on it.
Thank you guys very much for any info you have.

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Re: what am I getting into?,84 engine into an 86

Post by 82aspen » Sat Dec 13, 2014 9:02 pm

84 has PGs (pulse generators) at the back of the engine (pia to get at 'em) whereas 85 up they are behind the cam covers,

84 runs the tallest gearing and is one year only, the rest are the same, 84 prob not 1st choice if pulling big time weight,

one of the years is a one year only starter motor, might be 84,

output shaft for 87 is diff than the rest

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