[mailnome]

Drilling Guide System | OTC Tools

www.otctools.com

I used this kit the other week to drill out some broken exhaust manifold studs from the head and it worked really well. Also helped that I had good access.

Here is one drilled and backed out.

Close to start, one stud removed and replaced with a good bolt to keep some pressure on it. It came in with the rear two broken off below the surface.

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[Dave M]

I have used this as well, works very nicely!

 

[pilgrim]

Wow! That looks like it would work pretty well. I've never visualized using a rig like that, and trying to freehand drilling a broken bolt is a non-starter for me. I'd undoubtedly end up ruining the head if I tried to freehand it.

 

[mailnome]

Yep, freehand is still hard even if you great access to it.

One was pretty much dead center and the other still did drill a little cockeyed.

I was happy I got the rest out without breaking and only had to drill those two.

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