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help identify my parts! gs750

  • Thread starter Thread starter Guest
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That's great you have it running. That right cover still puzzles me, so does the clutch cable actually go into the left side?
 
Thanks for that. The cover is strange. The clutch cable wasn't fitted but the one supplied works with the cover on there in terms of fitment but it doesn't engage the clutch. Inside the cover there is a a threaded shaft sticking out of the middle of the clutch which would work with the spindle sticking out the top.

However on the other side the thin shaft with the little spring for the clutch is also present!

Also if it helps identification there is a cam guide wheel attached to little block in the middle on top of the cam cover.
 
I was wrong about the pedal being the problem

The 8V 750 has a clutch actuating mechanism in the sprocket cover on the left side of the bike, it's behind the small plate there. It pushes a rod that goes completely thru the transmission shaft and pushes the clutch plate out to release

That clutch cover must be from a 79 850, as that's the only one with a kickstart and the clutch actuator on the top
 
78gs750e said:
I looks to me like its was a 77 gs 750 E stock thats why the alluminum rims and dual disk front. The swinger is a common upgrade to our bikes and is def from a 80-83 gs1100 E. The only thing im confused on is the clutch cover with the splined shaft coming out by the oil fill for the clutch that is not right for a 77-79 750. It is a 8 valve motor so it might have a shaft motor swaped to chain?
Click to expand...

There is no 77 E model. Those came out in late 78. The brakes and wheels are 78/79.
 
Maybe post a couple more pics(left side case, cylinder head cover) that may help.
The only RH case cover I see with that configuration is off an 850.
That cylinder head cover is odd also, I can't believe someone would grind off the end cap mounting holes.
 
bigskybldr said:
Maybe post a couple more pics(left side case, cylinder head cover) that may help.
The only RH case cover I see with that configuration is off an 850.
That cylinder head cover is odd also, I can't believe someone would grind off the end cap mounting holes.
Click to expand...

I will do, but the bike is at my dads 100 miles away. Bit of a pain but i dont have a garage or shed. Also means he can work on it whilst im at work!

Here is a picture of the engine out of the bike i already have but not of the left side.

 
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To bad it's so far away,but having free labor sure makes up for it.
Why do you have the engine off the bike?
One nice thing about these 8 valve engines, '77-'79 the parts are the same.
I'd be keeping an eye out for a good used RH case cover cause that never belong on that engine.
 
That is clearly a 79 850 clutch cover, as posted previously. I have a couple of questions on that:
Inside the cover should be a clutch actuator rod. Is there one inside there?
Since the 750 had a pushrod which went from the right side across the transmission to the clutch, what is covering the hole where the pushrod used to be?
Also, the sprocket cover should have a place where the clutch cable was inserted, and a worm gear which actuated the clutch mechanism. Is it still there, or was the sprocket cover replaced as well? A picture of that side would probably be helpful.
 
Free labour certainly is good. He knows his stuff but never on one of these, and the mixture of parts is slightly confusing!

The engine is out as doing a full build on it once a baseline of what we actually have is worked out.
I have asked him to take pictures of the left side (it does still have the original covers with the hole in the top for the cable) and inside both sides so will add them as soon as i can.

Thanks for your time!
 
When he pulls the small cover off the left side he'll find the little spring and cable lever that actuates the clutch.
You should be able to find a decent right side 750 cover on ebay or off a parts bike pretty reasonable.
I'm curious about that swing arm, but your going about it the right way by taking care of the engine and trans. first.
If your still worried about what motor it is, pull the cam cover and count the valves. You already know from the engine stamp it's a GS750. '77-'79 have 8 valves ..end of mystery.
It will be interesting to see what you and your Dad build.....have fun!
 
Thanks for the replies, hopefully it will be a nice one once finished but i dont want to go too far without knowing what were dealing with!

With regard to the swingarm, I have bought the correct one off eBay but the pivot bolt I have is too big to go through the 77 bearings. It seems the frame has been bored out to take a larger swingarm bolt. Argh!

Here are some pictures of the clutch parts. You will note that the clutch actuator release is not there on the left side and on the right side there is a splined shaft sticking out the end which would link with the one sticking out the top of the casing as seen in earlier pictures.

Can you see what is missing or what would need changing to get it back to 77 750 spec?

Thanks for your help everyone!









 
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the rod with the spring by the sproket is the stock clutch actuator, the piece with the teeth on the other side is for the clutch cover that was on the motor when you got it. What do you want this bike to be when your done? Its not impossible but this would be a hard bike to restore to 100% orignal. I would leave the 1100 swingarm on the bike its a nice upgrade which saves you some weight and is much stronger.
 
If you haven't already down load the sevrvice manual from basscliff's web site its an factory manual and will show the stock clutch and how it works.
 
So on the right side, you'll need the correct case cover. That splined shaft coming out of the pressure plate looks like a clutch release off an 850. If you look at a 750 parts fiche you'll see it should be a push piece(part no.23121-45000) Everything else on the right side should be ok, they both look to use the same clutch parts according to the parts fiche. The left side that push rod looks wrong, it should be just a smooth rod that sticks out more and fits into the clutch release that's attached to the case cover.(part no. 23110-45001) You don't have a pic of the LH case cover so I can't see if your missing the rest of the clutch release parts. Look at a parts fiche for a 750 under clutch release, it will show you what you need.
I have no idea how much work is involved changing this back to stock.
 
Thanks bigsky, here is another confusing part! The cam guide wheel doesn't look like any other I have seen. I can't find one that looks like this anywhere. You can also see the cam cover has been hacked around under that top cover...nothing seems to be as it should!

Also now realised it has 850 pistons and the head is different to normal. See the last picture.







 
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Wow...I don't know what the previous owner was smokin, but he shouldn't have worked on his bike after he smoked it!
So are you going to proceed with this project or find another bike? To me this looks like a royal headache and a money pit.
 
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