new cylinder plugs (smaller?)

[theportunionkid]

Got new cylinder plugs and top seems a little smaller than the originals. Just don't want any surprises when I tear into the old girl. Can anybody confirm they fit. Got the right part # on the package 90338-11152 Measured top,(what's outside of cylinder) new one 13mm old one 14mm. Or do they spread in use? (Heat and cover pressing on them.)

[dna9656]

Cylinder plugs?

[Rick Butler]

They appear to be the (4) rubber water jacket plugs held in place by the metal cylinder side plates? The ones you screw the top threaded end of a spark plug into to remove.

 

If these are the plugs, they should fit snugly into the hole?

 

Hope this helps,

 

Rick

[dna9656]

They appear to be the (4) rubber water jacket plugs held in place by the metal cylinder side plates? The ones you screw the top threaded end of a spark plug into to remove.

 

If these are the plugs, they should fit snugly into the hole?

 

Hope this helps,

 

Rick

 

 

I'm not THAT familiar with the engine yet. I would have to see it on the parts illustration; maybe you can spot here: http://www.yamahapartshouse.com/oemparts/l/yam/50042517f8700209bc7880ab/1984-xvz12dkc2-parts and post the page here where you find it shown. I'm certain one of the more experienced guys will help you out.

[theportunionkid]

Went ahead and took out old plugs new ones have smaller top (the part exposed when installed) but diameter of the "plug " part is the same. I was just nervous that maybe I got the wrong part in the right bag. I have a history of being a bad luck schlep-rock. Really bizarre, dumb stuff like that happens to me all the time.

[mbrood]

I think you mean the plugs under the ribbed vertical cover plate on each cylinder side wall... this is simply a spark plug drain route to drain oil, water and crud from the deep recessed spark plug holes, a "tight" fit is not necessary.

 

Mike Brood

Edited March 22, 2014 by mbrood