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Bypass fitting
https://ausmini.com/forums/viewtopic.php?f=2&t=100591		 Page 1 of 1
Author:  Phil 850 [ Tue Dec 08, 2020 7:30 pm ]
Post subject:  Bypass fitting
I have a 12G940 head that has been reconditioned but the machine shop did not want to attempt removing what is left of the bypass fitting in case he ruined the head.
Attachment:
384BF6D7-EFEB-4F14-B9D0-ACD5A7A19BEF.jpeg


The bypass is approximately flush with the face of the casting and It is still reasonably thick.
The choices are:
1. Easyout
2. Weld a bolt in it and try and screw it out
3. Put a piece of 10mm bar in it and weld it up.
4. As the bore is 10mm it could be tapped M12 and a plug screwed in.
5. Drill it the root diameter of the current thread and try to peel out the rest of the bypass thread.

What have others found to be successful.
I’m happy to not use the bypass as I was intending to plug it anyway.

Phil
Author:  drmini in aust [ Wed Dec 09, 2020 4:28 am ]
Post subject:  Re: Bypass fitting
Bring to me and I will remove it. I have replaced heaps over the years. Worse than yours..
Clamp on mill.
Drill 9/16" diameter.
Tap it in mill, original size, 5/8-18 UNF.
I can supply a brass fitting that won't rust like originals.
Author:  Phil 850 [ Wed Dec 09, 2020 8:04 pm ]
Post subject:  Re: Bypass fitting
drmini in aust wrote:
Bring to me and I will remove it. I have replaced heaps over the years. Worse than yours..
Clamp on mill.
Drill 9/16" diameter.
Tap it in mill, original size, 5/8-18 UNF.
I can supply a brass fitting that won't rust like originals.


Thanks Kevin
I’ll give you a call/text to arrange a time.

Phil
Author:  Phil 850 [ Thu Dec 10, 2020 5:20 pm ]
Post subject:  Re: Bypass fitting
Fixed 8)
Attachment:
2D3ADD1A-E6D5-4B34-9688-F90357A41A72.jpeg
Author:  Mr Anderson [ Fri Dec 11, 2020 7:21 am ]
Post subject:  Re: Bypass fitting
Hats off to drmini for his generous offer, great to see!
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