Maintenance & Technical > KX100 / KX85 / KX80 / KX65 / KX60

First time top end rebuild

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BLACKBEARD:
Ok rod, crank ,bearings And seals seem to be intact. I think the cylinder is suspect. There is a small groove in a place where the P.O. Replaced one of the studs in the cylinder with an oversized stud. Could I get around buying a new cylinder? Or would it just be more problems down the road? Once again thanks for all and any help.

sandblaster:
You can't tell by looking at the crank or seals or feeling them to know if they are good.
The seals can look brand new and leak like a sieve causing a lean burn condition which can smoke your freshly rebuilt engine  :-o
Your crank may "feel" and "Look" good but be completely out of specs which can fly apart and blow your cases and ruin your new top end  :-o
The crank is easy to check with a 3 dollar feeler gauge and 1 minute of time.
Your top end can most likely be repaired and plated but to be sure, send some pics to the plating companies.
You can also get your cylinder sleeved rather then plated.

BLACKBEARD:
Gonna get me a feeler gauge and check the rod to crank play. What measurement or ball park should I be looking for? Is this where manual starts to come into play? Another thing Sandblaster, you got a way of putting things that I don't know, that Make it easy to grasp on. Thanks

sandblaster:

--- Quote from: BLACKBEARD on July 29, 2013, 11:21:35 AM ---What measurement or ball park should I be looking for? Is this where manual starts to come into play?

--- End quote ---

Yep..
Connecting Rod Big End Side Clearance
Standard: 0.40 ∼ 0.50 mm (0.016 ∼ 0.20 in.)
Service Limit: 0.7 mm (0.028 in.)

Motorrad:
sandblaster is the man.    knows his sheet. listen to him.    I do...   got me to where I am today.

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