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Cylinder head removal.

  • Thread starter Thread starter Oliverstrother
  • Start date Start date
O

Oliverstrother

Guest
Is it possible to removed the cylinder head on a 1982 GS650G without removing the engine?

I suspect I've got a oil leak through the valve guides in the cylinders, and I want to rebuild the head. But I don't want to remove the engine.

Anyone have any experience of this?

Thinking remove the
Carbs
Cam tensioner
Plugs/cables
Head cover
Tach cable
Cam shafts
Exhausts

Lift it up and off.

Or is it possible to service the guides without removing the head?
 
Valves guides are not easy to replace. The engine shouldn't need them unless it has a bunch of miles on it. Look in your factory Suzuki service manual for specific details on how to service the engine. If you don't have a manual, basscliff offers a free download on his website.
 
You can have new guides put in at places like EDCO in Petaluma CA. If you need them....
 
40k miles in nothing for a GS engine. It may need valve stem seals, but guides are unlikely.
 
Last edited:
Ok, great info thanks. Just checking valve stem seals easier to replace?

I suppose I'm asking is it possible to replace the seals (rings?) without removing the guides. The manual is a little ambiguous.
 
Last edited:
Oliverstrother said:
Ok, great info thanks. Just checking valve stem seals easier to replace?
Click to expand...

Easier, not completely easy. You still have to pull the head and take the valve springs out, but the seals themselves are an easy do it yourself thing.

It is supposedly possible to do it with the head in place, not sure.
There was a thread on here a while ago from a guy who says he did it.
 
Some people put rope in the cylinder through the spark plug hole the turn the crank to compress the rope against the head to take the valve springs off without the valve moving. Not sure I'd do that though.
 
What I haven't figured out with this method is how to put the valve keepers back on. Pry on the frame to compress the spring using the window in a socket trick?? Also could lose a keeper or some other tiny part down into the engine.

This part does not sound easy.
 
I've never done it but they say use a O2 socket and put grease on the keepers. Other than that I have no idea.
 
Ok, so if I pull the head and drop out the valves and springs, I'll have access to the seals? They'll just drop out? Pull out?
 
Wiggle them off with a long needle nose pliers. Tap the new ones on lightly with a socket of the correct size.
 
Make sure you lap the valves while it's apart and put them back in the same spot they came from. I'm sure I don't need to tell you that though. :)
 
Thanks, yes would certainly lap the valves if I had a chance too.

Tkent02 - lightly tapping new seals in, something you've done yourself? Any problems? We're the old seals damaged on removal? (Service guide does say not to reuse them)
 
Oliverstrother said:
Thanks, yes would certainly lap the valves if I had a chance too.

Tkent02 - lightly tapping new seals in, something you've done yourself? Any problems? We're the old seals damaged on removal? (Service guide does say not to reuse them)
Click to expand...
Taking them off will ruin them, but that doesn't matter.
If you were going to re use them, leave them in, but that's dumb. They are dirt cheap.

Tap them in, no problem. Hit them harder they may distort and leak. Or something.
 
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