What next? Pics!

[don]

They make tap extractors just for this.

McMaster-Carr or MSC industrial supply will have them. Both have websites you can purchase from.

Use actual cutting oil or tap-magic, not wd-40 or motor oil etc,..... real cutting oil......, when you try to back it out. There WILL be small chips of tap embedded into the aluminium. Wiggle left, right, back to left, back to right.......... untill you're out.

 

[Theo]

They make tap extractors just for this.

McMaster-Carr or MSC industrial supply will have them. Both have websites you can purchase from.

Use actual cutting oil or tap-magic, not wd-40 or motor oil etc,..... real cutting oil......, when you try to back it out. There WILL be small chips of tap embedded into the aluminium. Wiggle left, right, back to left, back to right.......... untill you're out.

Sweet. So my idea wasn't such a long shot after all.

 

[Henryinva]

Ive tried these POS before and snapped off the little fingers, not once, but every friggin time...

Good luck, and make sure the kids arent around when ya use said wonder tool..

 

[Guest]

Ive tried these POS before and snapped off the little fingers, not once, but every friggin time...

Good luck, and make sure the kids arent around when ya use said wonder tool..

So what's the alternative?
Machine shop?

 

[Detroit Diesel Man]

Taps are very strong BUT very very brittle...use a center punch to "break" the tap..being as brittle as they are if you use a center punch and hit it hard in the center..it should break apart and you can use a pick to pull the pieces out...Ive done this a few times when Ive broken a tap and it works great.


DDM

 

[gssuzukixxx]

I broke a tap off once in my old BSA. I got it out by puting the pointy ends of my needle nose pliers into the indents of the tap and then twisting it out with a crescent wrench on the pliers.

It worked

Brian

 

[Dogma]

Looking for one with a electrical discharge machine.
Plus I dont have a press.

That's what I'd be doing. A lot of shops maintain contact with shops that have the appropriate machine for just such an occasion. Some shops do have what I've heard called a "hole popper" which is a very simple drill press version of a ram EDM. This is for broken tap removal, wire EDM starter holes, that sort of thing.

 

[kevinmccaffrey]

Yup.. E lux...

Yup.. E lux...

Cylinder head, exhaust port... Busted off a tap... then busted off an easy out that WAS gonna remove the tap.... SH T..! Then HAD to have an expert do da job...100 bucks..OUCH!! Machine shop (good one) should have one.. or be able to tell ya where. think it was called "E-Lux" machine.when I retrieved said head I was told "it smoked and smelled a LOT" when they removed the "bits" must have been "fixed" by the PO with some kinda "crap/stuff/JB Weld or somethin'... WTF gotta fix er...LET'S BE CAREFUL OUT DARE...!:clap:

 

[Guest]

needle nose pliers into the indents of the tap and then twisting it out with a crescent wrench on the pliers.

It worked

Brian

Tried it, no go..

Keven, I'd rather buy another head than go through all the BS dealing with a machine shop.
"yeah, we might be able to get it out" Heard that one already..

 

[Guest]

Taps are very strong BUT very very brittle...use a center punch to "break" the tap..being as brittle as they are if you use a center punch and hit it hard in the center..it should break apart and you can use a pick to pull the pieces out...Ive done this a few times when Ive broken a tap and it works great.


DDM

BINGO!
It worked for the most part. Still a bit in there but there is enough thread to hold.
Had to knock the crap out of it and did a job on the threads on the outer part but the bolt seems to be working.
I'll use studs with bolts when I get ready to bolt the exhaust on.
I had almost given up and was shopping heads on ebay but figured if I was gonna trash this head anyway I might as well give it a shot.