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rings!

  • Thread starter Thread starter jabberjoe87
  • Start date Start date
jabberjoe87 said:
I did a valve adjustment last winter. The deal is that the bike consumes oil while running. I did the compression test, then put a dab of oil in the cylinder before performing a second one and from what i remember compression rose atleast a bit on all and substantially on two. I was gonna do valve seals along with the pistons. How did you get the head off of the bike without removing the cam chain? this is on a 77 750 by the way. I"m still having trouble finding a place that sells oem rings
Click to expand...

As a late follow-up, 95% of the engines I have worked on in the past have all shown a "slight" increase in compression when introducing oil into the cyl. The really bad ones go up a 20-30 psi.

I'm thinking that you need a valve job. If you are dirt poor, a lapping can get you by...I've done it and I've seen others do it with good results...it's just not optimal. i.e like knurling the guides instead of replacing them.

A cyl leak down tester would help you to find exactly where the by-passing is coming from.

Again, on the cheap, simply break the glaze on the cyl walls with the cyls off so you can properly wash it out and install new rings.
 
jabberjoe87 said:
I did a valve adjustment last winter. The deal is that the bike consumes oil while running. I did the compression test, then put a dab of oil in the cylinder before performing a second one and from what i remember compression rose atleast a bit on all and substantially on two. I was gonna do valve seals along with the pistons. How did you get the head off of the bike without removing the cam chain? this is on a 77 750 by the way. I"m still having trouble finding a place that sells oem rings
Click to expand...

Prologue: Based on knowledge of 1000G engine, other models may vary.

There is a slit in the middle of the head where the cam chain runs. you tie a wire to it before removing the cams, this stops it from falling into the engine after the cams are removed. You loosen the head, raise it slightly, then hook something like a bent coathanger to the cam chain BELOW the now slightly raised head. Now you can unhook whats holding the cam chain above the head and remove it while what you hooked below the head stops the chain from falling into the engine. Repeat the same method for removing the block.
 
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