Valve removal....

Hey guys, just took apart the bike after dropping a valve and I am having trouble removing and re-inserting the valves.
The bent valve slid out easily because the tip was sheared off, but there is another valve with some markings on the contact point so I was going to replace it but it doesnt slide out of the valve guide. Any suggestions on getting it out?
Also the replacement valve for the bent one will not slide up into the guide, the OD seems too big or at least the tip is too big.

Should I just sand around the tip to see if I can get it to slide in or what?

Thanks,
86

 

For the removal of the bend valve I would use a dremmel to cut off the piece of the valve where that gets stuck. Care should be taken not to spread the cutting wheel dust as it is a very nice abrasive.
For the insertion of the "new" one I would firstly verify if the tip is wider and the rest is ok, then examine if the tip is wider as an early stage of mushrooming or not before starting any sanding.
There is a chance the "new" valve will soon give "new" problems.

 

valve guide reamer?

 

Just sand or grind or whatever to get the old valve out, without damaging the guide.

Are the rplacement valves NEW, or just new to you, used? If they're used and won't go in, I would not use themm they're already starting to fail. I'm going through this now, with all used valves, and I have to grind the tips of a few to get them out.

On a side note, I bought a cool tool from Snap-on for swapping the valves. You put something under the valve to keep it from moving, put the tool over the retainer, and rap it lightly with a hammer. It has a magnet in it to catch the keeperswhen they come loose. The installer part has you load the keepers in the retainer, set that on top of the spring, over the valve. Then you put this tool over it, and there's a part that goes in the middle of the keepers. You just push down on the tool, and the keepers drop into place, and you have the valve installed. Swap time is a matter of seconds!

 

Here's a link to the tool I was talking about ^^^

GA317, Remover/Installer, Metric Valve Keeper

 

that looks like a pretty slick tool, i think it would look good next to the valve/seat grinder in the garage, my valve tool has to be 30 years old

 

Thanks for the info on the valve removal tool ! And yes the valves are used but new to me, the head of the valve does not show any signs of wear but I guess it could be mushroomed. The old valve slid out with ease due to the head being sheared off around where the keeper groove is. Is there any place to get good garenteed valves? or even new?

I found valves on bike bandit but they are $50 a pop. But that price is too high to be considered to replace all the valves.
Does sanding the tip of the valve hurt its structural integrity? Clymer manual reccomends to debur the valves when changing them so I would think not...

Gonna check the local honda shop nearby and see if they have any suggestions for valves or if they have any in stock, they just happened to have a set of brake rotors for this bike in stock (from the 80's era) last time I was up there!!!!

Thanks for all your help everyone, Are pictures of the process wanted??????

Edit: Also do valves from the 84-85 models fit the 86? thanks

 

beaverdam honda lists the intakes at $19.34 and the ex. @ $41.18

 

That valve tool is slick! I couldn't believe it when I first used it! I had to make sure it really works that well by trying more valves!

I know what you mean on the cost of the valves. That is why I'm putting in what I have for now, and keeping an eye (ear) on them. I had sent an email to ferrea valves to see if they could help me out, but I never heard back. Right now, I'm looking for one of each valve out of a CBR600F (1) since they're really close to the same size as the 500's valves!

As for deburring them, be very careful not to sand or grind, or whatever on the tip itself, I hear the hardening is not very deep on these valves, and it contributes to the failures.

 

Ok thanks for all the tips , I believe I will be doing the same in putting the ones I have in for now while I look for more to replace them! All of my intake valves are perfect, just the exhaust valves that are looking rough, makes you wonder why????
has anyone tried to re-harden these valves? is it possible?

and jporter12, keep me updated on ferra valves and the cbr600f valves if you find anything let me know! Thanks!!!!

 

I will definately be posting if I ever find out anything.