TOPIC:

with the valve springs being sunk down in the head you have to have specific valve spring compressors.
such as this,
1stwebsales.com/universal-ohv-ohc-valve-...bfvykEXN8aAps58P8HAQ

then either hold the valves up with air or a rubber hose stuffed in the cylinders.
i have this seal puller but the frame rails will interfere with its use .www.goodson.com/VSP-323-Valve-Seal-Puller-VSP-323/

you can dig em off with a hook or 90degree pick or some hose pulling pliers
www.agatools.com/tool/n62-valve-stem-seal-tool/pliers
it'll be a b!+(h tho.

then you gotta figure out how to get em all pushed back into place.

i'm betting that by the time you got done you would wish you had just pulled the head.

thats my .02 fwiw,
leon

Good point about holding the valves up with air. That's how I replaced the valve guide seals on my Chevy 350 engine and it worked well. Of course, getting access to the seals was easier on that engine than on a KZ engine. Ed

If the valve seals are bad then there will be a lot of crusty carbon deposits in the head, valves and pistons. I'd rather take the head off in about an hour to clean it rather that have this glowing crap in my engine to cause more damage. My exhaust valves were seating on carbon not the seats. Cleaned and lapped the valves, lost adjustment range. Should have "tipped" the valves too.
Steve

531blackbanshee wrote: with the valve springs being sunk down in the head you have to have specific valve spring compressors.
such as this,
1stwebsales.com/universal-ohv-ohc-valve-...bfvykEXN8aAps58P8HAQ

then either hold the valves up with air or a rubber hose stuffed in the cylinders.
i have this seal puller but the frame rails will interfere with its use .www.goodson.com/VSP-323-Valve-Seal-Puller-VSP-323/

you can dig em off with a hook or 90degree pick or some hose pulling pliers
www.agatools.com/tool/n62-valve-stem-seal-tool/pliers
it'll be a b!+(h tho.

then you gotta figure out how to get em all pushed back into place.

i'm betting that by the time you got done you would wish you had just pulled the head.

thats my .02 fwiw,
leon

I agree!! Plus either way you will be buying some kind of tool to depress the valve springs to get the keepers off the stems.
So, with the head off and valves out, you get to consider lapping all the valves, or a complete valve job but at the very least, a good de-carbonization of the piston domes, valves and combustion chamber !! All win win scenarios

missionkz wrote:

531blackbanshee wrote: with the valve springs being sunk down in the head you have to have specific valve spring compressors.
such as this,
1stwebsales.com/universal-ohv-ohc-valve-...bfvykEXN8aAps58P8HAQ

then either hold the valves up with air or a rubber hose stuffed in the cylinders.
i have this seal puller but the frame rails will interfere with its use .www.goodson.com/VSP-323-Valve-Seal-Puller-VSP-323/

you can dig em off with a hook or 90degree pick or some hose pulling pliers
www.agatools.com/tool/n62-valve-stem-seal-tool/pliers
it'll be a b!+(h tho.

then you gotta figure out how to get em all pushed back into place.

i'm betting that by the time you got done you would wish you had just pulled the head.

thats my .02 fwiw,
leon

a good de-carbonization of the piston domes, valves and combustion chamber !! All win win scenarios

GM dealers sell some fluid for that. I used it once awhile ago.

So all in all should I be taking the head off and doing my best to clean everything up or should I just get the valve clearances correct and bolt everything together and see if the bike will start? thanks

If the head is on, there are no leaks, no smoking and no oil useage, adjust the valves and see how it runs.
Steve

Head is on but I have no idea if there is smoking or oil usage because I have never had it running.

I'd take the head off and go through it.
Steve

Ok so was back and forth about pulling the head off and taking a look or just bolt everything together and see if the valve clearances fixed the problem. Anyways I pulled the head off and yes as you can see in the pictures the valves are pretty dirty... and there is a hole in the 3rd piston head!
#1- Where should I start with the head? just clean everything really well or pull the valves and replace the valves and do a lap job?
what kind of chemical can I use on it?
#2-as for the piston. Where is the best place to find a new one? can I just replace the 1 or do I need to replace all 4?
-Do I clean it the same way I will clean the valves and head?
-inode the cylinder doesnt look too bad though so can I just leave that?










I guess I really got myself into one now.
thanks for all the help

Good move, pull the valves and buy some Viton seals. Pull the barrels and take pics on the side of the pistons. Looks like a fresh hone so there must have been some kind of problem. Once you have it laid out you can decide what to do next.
Steve

Ok so I can try and pull the valves and clean everything but can I just replace 1 piston or do I need to do all of them. A bit more direction with all this would be great. thanks again