How my weekend started...

Dropped that new Moose/CP piston in the bike and said fuck it, I'm going to clean up this head while I have it off... Now I need a head, lol

 

 

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I've Been in worse scenarios, I'll chalk this up to a learning experience. I was taking the bump before the valve boss out and was "almost" done, lol. As you can see I didnt make it to far into the job. At least it was on the first runner and not the last and I have plenty of Bud light left to end the evening.

 

Moral of the story... Can't learn if you don't try.

Edited January 16, 2014 by TimesTen

Well done. Epoxy might get you by if the hole is small. Spring seat integrity is important.

Im going to use it for practice on the other side and just find another head to put back on...

 

How is it they get the entire valve boss shave out with out burning though? My thoughts were, I'm just going to take this little bump out and leave that big bump as to not get carried away.

Bollox! Well your braver than me so far...

 

Can it really be fixed?

04/05 heads get epoxy in the roof and that front boss area is practically untouuched. I then shape and cut the remaining guide/boss to how i want it

I was waiting for you to go first Stew... I got tired of waiting! LOL

So in order to smooth that top out on the 04/05 you HAVE to use epoxy, no way around it?

Yes it can stew. Almost anything can be fixed! The guy i use for machine work has shown me some pretty extreme examples that i was amazed with.

I knew if I hung on, the restraint would be more than you could bear!

So in order to smooth that top out on the 04/05 you HAVE to use epoxy, no way around it?

 

Its possible to do it without but the roof is already too high.

ooops,. RE just fixed a head that I had that was cracked in it..

What tools were you using?

he was using a Mixxer Dremel Tool...

So if it's possible... How much material is left on the roof? I understand why the epoxy is used but I figured the roof would have held more then what I cut out.. I should have measured it first but I figured I was safe.

 

Stew, A bur and a flap wheel on a dremel... Another reason I figured I would be ok. I was pretty ginger about it.

 

Fix it or learn more?? here's a top side pic.

 

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Edited January 16, 2014 by TimesTen

he was using a Mixxer Dremel Tool...

 

I'm almost ashamed to say it because I have access to a good set up... But like I said, this was an after thought while dropping a piston in. Thought what's the worst.... and it happened, lol

I would rock it if it was my personal bike. But i would lay a fair amount of epoxy in the roof to improve integrity.

Can I ask what you use? I know there's secrets in the art, hope this isnt one.

What fuel are you running? Jb weld holds up fine to pump gas and standard 110 leaded. For oxygenated corrosive fuels, e85 or methanol i use an A/B epoxy meant for combustion chambers.

I run 100LL so I'm assuming JB will work... Stick or tubes?

Fix then keep going... don't give up now... drink more then have a think...It'll make sense I promise.. :rotflmao:

 

You can't get a little run of weld in from the top just to give it a bit more meat?

I might give it a shot with the JB... I thought about welding it but started weighing out the hassle to cash ratio... It might just be easier to get another one the to have it welded and machined.

 

If I can epoxy it from here, I might do that then do the other side and see what I come up with.

Dont want to compromise spring seat surface IMO it would have to be machined if any material was added from the top. JB weld should work fine. Stick/tubes depends on size of the hole. Liquid jb weld likes to run easily. Just dont use the quick shit and let it cure overnight then smooth/shape it with a sanding roll

And I'm having a drink, lol... notice all the edits, I keep hitting wrong keys then going back to spell check, lol

Would you use liquid or tube or does it really not make a difference? Its small enough that I could mask the backside to keep it from dripping and making a mess.

I think the liquid bonds a little better so thats what i would use