Hmm. I could have sworn that's what I used that tap for. I'm not
totally sure of the size, but I'm sure of the technique. Maybe I
borrowed a larger tap from uncle jack... The original threads are
straight threads, so you really have to glue whatever you stick in
there in place. If you go to the NPT thread / plug deal, they are
tapered and you're sure of no leaks.
- Tony
At 09:13 PM 8/31/2008, Thomas Boggiano wrote:
>Hi Tony
>
>The gallery plugs are larger than 1/2 inch. They measure closer to 3/4 of an
>inch.
>Are you sure of the NPT? I found a steel set screw that is 3/4 -16
>
>Tom
>----- Original Message ----- From: "Tony Drews" <tony@tonydrews.com>
>To: <triumphs@autox.team.net>
>Sent: Sunday, August 31, 2008 3:54 PM
>Subject: Re: [TR] oil gallery ends plugs and oil gallery plugs
>
>
>>The tap and plugs are 1/2"-14 NPT.
>>
>>- Tony
>>
>>At 02:21 PM 8/31/2008, Tony Drews wrote:
>>>There's a pipe thread that's close to what's in the block
>>>originally. Re-tap them with this, and put brass pipe thread plugs
>>>with allen head ends. Just tap it deep enough that at least the
>>>front plug doesn't interfere with the front plate. Also, if you go
>>>too deep with the front plug, make sure you don't block the feed to
>>>the front main - I had to grind a bevel on the backside of mine since
>>>I got a little overzealous with the tap. I shove some paper towel
>>>down the gallery before tapping so as little crap as possible gets in
>>>the gallery, and then I clean it out very well before
>>>assembly. Works best on a bare block that you can clean all passages
>>>thoroughly after tapping.
>>>
>>>- Tony Drews
>>>
>>>At 12:00 PM 8/31/2008, Randall wrote:
>>> > > It my understanding that no one is making those. Every one I
>>> > > have talked to that have needed them have had a machine shop
>>> > > start with a bar of steel and fabricate them from scratch.
>>> > > Where they also a pipe thread? Requiring re-taping of the galley?
>>> >
>>> >I don't know offhand, but I've got plenty of spare blocks if you want to
>>> >come measure one. Or better yet, cart it away <G>
>>> >
>>> >Randall
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