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valve trouble--- keepers are hitting the bottom of the buckets

Looking back at the broken guide you would wonder how far can a valve be let in before the neck starts hitting the guides.
 
Brendan W said:
Looking back at the broken guide you would wonder how far can a valve be let in before the neck starts hitting the guides.
Click to expand...

Now that you mention it, I think that's exactly what happened. They took .030" off !!!

By the time the valves and keepers were shortened enough to be able to shim the valves, there probably wasn't much left of the keepers.


The keepers were not short.. that's why they hit the buckets. The were taller than the valve stem. So the ridge on the inside of the keepers got beat up.
Like someone else noted... it's amazing I didn't drop a valve.
 
When building big valve heads, it is very important to maintain adequate clearance between the valves on the seats, so they won't hit each other. This is done by sinking the valves into the head, then unshrouding the area around the valve. This is very common mod on 2 valve GSs and Kaw KZs. Whoever worked on that head, simply did not know what they were doing. That head is not junk.
 
Big Jay said:
When building big valve heads, it is very important to maintain adequate clearance between the valves on the seats, so they won't hit each other. This is done by sinking the valves into the head, then unshrouding the area around the valve. This is very common mod on 2 valve GSs and Kaw KZs. Whoever worked on that head, simply did not know what they were doing. That head is not junk.
Click to expand...

that makes sense to me... if it had big valves in there. I believe they are stock.
The more I fiddle with this, I'm thinking this bike had a lot more mods at one time, then was repaired with stock parts when he blew it up.
The guy I bought it from was very excited to tell me all about the special parts... many of them were not there when I took it apart.
 
My point is, just because the valves are sunk doesn't necessarly make the head junk.
 
On a side note. Never take your head to a "car" guy. Most are butchers and dont care. Some bike guys too. Do your research on anything that you have to pay money for and should save you time and money in the long run.
 
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