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engine removal

L

letchworth rider

Forum Apprentice
Time to get the engine out of the 81 GS750EX 16v. I am working alone, and this motor obviously weighs a lot more than my CB350 twin. Is there a way to get it out whole, or must I disassemble the top end first. I want to check the crank and bearings before I go any farther.
 
First you need to know one important fact..it will only come out the right side of the bike. the left mounts are welded to the frame. Second..remove the carbs, airbox and the breather cover..not the cam cover. Just the littl cover on top. All this will provide the needed room to lift it out whole. Recruit and friend to help you lift it and remove it out of the bike.
 
Get an old tire or something else that kinda squishy. Remove all the motor mounts and as gently as possible lay the bike and engine over onto the tire. Wiggle and jiggle and lift the bike off the engine leaving it lay on the tire. It comes out best from the right side.

The best route is to get a strong friend and lift it out. Again, out of the right side of the bike. I think you're going to need someone to help anyway, regardless of the method. Unless you're younger and stronger than me. :)
 
if you lay it over be sure the oil is darined so it doesnt spill out the top of the breather cover area..I know some say the breather cover doesnt need to come off but i do for that extra 1/2 inch of wiggle room.
 
get r done

get r done

Thanks for the suggestions. The friend would be great, but can't count on it.
I will post again when I get it out.
Also decided to go back to the original air box. Looking for a good rider rather than extra horses, especially since I am used to a 350.
 
letchworth rider said:
Time to get the engine out of the 81 GS750EX 16v. I am working alone, and this motor obviously weighs a lot more than my CB350 twin. Is there a way to get it out whole, or must I disassemble the top end first. I want to check the crank and bearings before I go any farther.
Click to expand...

As said above, you'll either have to develop some really crazy ab/back muscles or lay the bike over to get the motor out. I did it by myself without laying the bike over so it can be done...but I also dropped the motor on the floor. Turns out it weighs nearly 300lbs. BE VERY CAREFUL ABOUT THAT! The engine is a seriously heavy piece of...stuff...

chuck hahn said:
First you need to know one important fact..it will only come out the right side of the bike. the left mounts are welded to the frame. Second..remove the carbs, airbox and the breather cover..not the cam cover. Just the littl cover on top. All this will provide the needed room to lift it out whole. Recruit and friend to help you lift it and remove it out of the bike.
Click to expand...


ummm I took the engine out the left side and no, none of the mounts are welded.
 
I have an 85 GS700E, so it's pretty similar. To get the motor out, I pulled everything off down to the cylinder base gasket, including alternator stator, ignition and clutch. It was an easy one-man operation after that using nothing but a roll-around floor jack - up, scooted it to the right, eased it over the lower frame rail back onto the jack, over some more and down.

To go back in, I did the reverse, although I DID put the pistons and cylinders back on first. Nothing to it.

http://www.thegsresources.com/_forum/showthread.php?t=161316

Since it's not really an inconvenience to pull the top end while the engine is still in the frame, and it's actually easier to pull the accessories off (clutch, etc) while still in the frame, I'd go that route if I were you.

Good luck with it, whichever way you go.

Kirk
 
Lay it on its side and lift the frame off the engine.
Thats how I did mine, off and then back on, by myself.
 
Just my $.02, I have done it both ways laying the bike over and also lugging it in from the side during my project which I did several times during different mock ups for frame gussets and other stuff. I preferred after the second time of laying it down to just pick it up and set it in the frame.
I did it by myself using a small tool box to set the engine on and then scoot it over into the frame but it helps to have an extra set of hands for sure.
 
If you are going down to the crank anyway, just take the top end off. Save your back. It's no harder to remove the top half with it in the frame.

I took my engine out with the top end off, but then I put it back in with the top on... either way, it's doable solo. put a milk crate or something solid and similar height to the frame next to the bike, straddle the bike on the center stand and bring it out to the right.

use a jack if you want to help the initial lift out of the frame.
 
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