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Tips for stuck dowel pins

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Old Aug 18, 2022 | 02:28 PM
  #1  
Demville's Avatar
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Default Tips for stuck dowel pins

So I have a problem, my head allignment dowel is fully stuck inside my head and I am unable to get it out. Does anybody have tips to get it out?

Old Aug 18, 2022 | 02:54 PM
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Pipe tap may work. Never tried on that particular dowel, but have used it in similar circumstances.
Old Aug 18, 2022 | 02:54 PM
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Try something like this: https://www.harborfreight.com/slide-...kaAqj-EALw_wcB

it’ll go in to the bottom, then as you thread the handle in it expands, hopefully gripping the bottom lip of the dowel, allowing you to tap it out.
Old Aug 18, 2022 | 06:07 PM
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Concrete anchor bolt, the one where it expands at the bottom as you tighten it. I use these for the sleeve in the diff/PPF.

Dynabolt
Old Aug 18, 2022 | 07:37 PM
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Use a propane torch to heat the head up q little then wiggle it out with a 90° or hook pick.

The other methods stated will work as well
Old Aug 18, 2022 | 08:59 PM
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Have you employed explosives?
Old Aug 19, 2022 | 01:38 AM
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I have used concrete anchor bolts and pilot bearing pullers with success in the past.

You could also find a bolt that fits snuggish into the dowel (cut the threaded portion off and use the unthreaded part if you have to, fill the hole with grease (not all the way to the top, leave it maybe 1/4" below the surface), and tap the bolt with a hammer.

Six, expletives work better than explosives if you do not have access to another cylinder head in the foreseeable future.

Last edited by Godless Commie; Aug 19, 2022 at 01:51 AM.
Old Aug 19, 2022 | 03:08 AM
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If you have a MIG, just tack weld a little screw to the inside with low amperage and pull it out. Sometimes it's even losing it's tension while cooling off and you can take it out very easily.
Old Aug 19, 2022 | 04:04 AM
  #9  
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... and when you have it out, get another one, cut an appropriate length off it and put it down the hole so it acts as a stop for the dowel, preventing a repeat.

I presume this happened when the head was put on, so there has potentially been some misalignment since it was last off? Or when you were removing the head?
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