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Old 10-14-2008, 07:00 PM   #1
davenelson6
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Unhappy suzuki cylinder

oops. i think i ruined a cylinder.i helped a friend out and put new rings in his bike. i noticed that the cylinder wasnt sleeved. didnt see anything in the service manual about honing. i ran a hone through it with wd40 just to break the glaze. the bike runs fine but smokes like a ***** until it warms up. anybody think that the rings will seat and be alright or did i ruin the cylinder for good?
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Old 10-14-2008, 07:07 PM   #2
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What kind of bike? Model? Year? Two or Four stroke?
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Old 10-14-2008, 07:33 PM   #3
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forgot to put in its an 07 dr-z400sm. 4 stroke

Last edited by davenelson6 : 10-14-2008 at 07:35 PM. Reason: typo
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Old 10-14-2008, 08:01 PM   #4
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Compression gauge? Perhaps?
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Old 10-14-2008, 08:12 PM   #5
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What kind of rings did you put in it? How much honing did it take to "break the glaze"? I ask, as a friend of mine rebuilt a Triumph Triple a couple of years-ago with the Nikasil plating.

Essentially it was up-down-up-down-up and it was done with each cylinder. He also used a "ball" type hone that another friend loaned him, with very-fine grit.

Have you checked compression both hot and cold?
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Old 10-14-2008, 08:18 PM   #6
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i was told to ball hone it but when i saw how much they cost i figured i would cheat. i barely ran the hone up and down the cylinder. just enough to have an even look on the walls. im hoping that the rings will eventually seal if not i think you can get these cylinders replated.
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Old 10-14-2008, 08:19 PM   #7
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no i didnt check compression at all and the rings were oem
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Old 10-15-2008, 07:43 AM   #8
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Are you sure the smoking isn't caused by something else?

Why were you re-ringing an '07?

And, if it was a bad oil ring, it wouldn't stop smoking when the engine warmed up. Maybe there is a bad valve stem seal.
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Old 10-15-2008, 12:33 PM   #9
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here is the story. the guy bought it from our used car dept. it was a trade in so no history on it. it was fine for a while but then he said it was going through oil like crazy. the air box was full of oil and it was dripping out on his back tire. his buddy at the motorcycle dealer said those bikes are hard on top ends. i offered to take a look at it. he had changed the oil once. it has the dipstick in the frame. he ordered a service manual for it and i pulled the motor apart while we waited for the manual to come in. it seemed to have alot of oil in it. the motor looked perfect inside and i then realized he had way too much oil in it. he admitted he didnt know exactly how much it held or how to properly check it. when we got the manual it all became clear. i wanted to just put it back together but his buddy said we should replace the piston and rings. i saw no need for the piston but put the rings in.

Last edited by davenelson6 : 10-15-2008 at 12:34 PM. Reason: left info out
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Old 10-15-2008, 12:57 PM   #10
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Oh jeezus. Since it's a 4 striker it probably has a steel cylinder, not a chrome bore. If you didn't buzz away for half an hour with the hone, it'll be OK after the rings seat. Hopefully. Tell your "freind" to keep away from anything sharper than a pencil, he might hurt himself.
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