GS850 and GS1000 hybrid?

[kentrich]

Hey all, I'm new to all this bike rebuilding stuff, so please bear with me. I've got a GS850 in my garage that has sat not running for about 8 years now. I've created a self-honoring goal for myself to get this thing running in the next two months.

I bent the tip of the crank some years ago when a woman pulled out in front of me (no injuries, thank the Lord). However, I would like to just replace the engine. I've got two to choose from; a GS850 (incomplete), and a GS1000 (complete). I just need to know if a GS1000 motor will bolt in to a GS850 frame. Does anyone have any experience with this?

Many many thanks to whoever is watching this post and can answer this question for me.

Kent

[Steve]

Yes, the 1000 engine will pretty much bolt in, as long as it's a 1000G engine (might need to adapt a lower mount), but the driveshaft is a different size, so you will need the shaft from the 1000 as well. The final drive and swingarm are no problem, just the shaft itself.

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[gmansyz]

Or, you could just swap the internals along with cylinder, pistons and head.
G

[Steve]

Or, you could just swap the internals along with cylinder, pistons and head.
G

Well, seeing as how the crank is damaged:

I bent the tip of the crank some years ago when a woman pulled out in front of me ...

For all the effort involved in replacing the crank, it would be better to just change the entire engine.

Besides, the 850 has 16mm wrist pins, the 1000's are 18mm, so it's not a matter of simply swapping upper-end parts.

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