[Public-List] Manifold petcock Atomic 4

[Ronald Walker]

Thanks Don
Sounds like my best bet.
Ron #292

--- On Sat, 5/19/12, Don Campbell <dk.campbell at sympatico.ca> wrote:

> From: Don Campbell <dk.campbell at sympatico.ca>
> Subject: Re: [Public-List] Manifold petcock Atomic 4
> To: "Alberg 30 Public List -- open to all" <public-list at lists.alberg30.org>
> Date: Saturday, May 19, 2012, 9:40 AM
> If you can find a bottoming tap of
> the correct size, it has far less 
> taper than the normal tapered tap. You might want to compare
> it with a 
> plug tap to see which might suit you best. I imagine you
> will have to go 
> to an industrial supplier who carries an open line of tools
> to find them.
> Don #528
> 
> On 5/19/2012 8:27 AM, Ronald Walker wrote:
> > The engine is the old Atomic-4.Its my understanding
> that all Albergs were originally powered by them.I believe
> the petcock is brass and the manifold is some type of steel.
> As I said the threads are there, just flattened out. I'm
> going to try some J.B.Weld. Don't know what else to do.
> >
> > --- On Sat, 5/19/12, Glennb<brooks.glenn at comcast.net> 
> wrote:
> >
> >> From: Glennb<brooks.glenn at comcast.net>
> >> Subject: Re: [Public-List] Manifold petcock Atomic
> 4
> >> To: "Alberg 30 Public List -- open to all"<public-list at lists.alberg30.org>
> >> Date: Saturday, May 19, 2012, 1:18 AM
> >> What kind of engine/manifold do you
> >> have, and what material is the petcock made
> of?  sounds
> >> like the petcock corroded off, leaving part of the
> threaded
> >> portion in the manifold.
> >>
> >> If so, try going in with a very small drill bit,
> maybe
> >> slightly larger than the ID of the hole, then run a
> series
> >> of increasingly larger taps to ream out the old
> material to
> >> match the original ID and thread.
> >>
> >> just did this on my steam engine, took about an
> hour to
> >> replace the broken nipple. But it was brass and the
> boiler
> >> is steel.
> >>
> >> Glenn p
> >> dolce 318
> >>
> >>
> >> Sent from my iPad
> >>
> >> On May 18, 2012, at 12:47 PM, Ronald Walker<rwpsw at sbcglobal.net>
> >> wrote:
> >>
> >>> Maybe someone can help me with a small problem
> I
> >> discovered during the spring start-up procedure.On
> the aft
> >> part of the manifold there is a petcock. Its is for
> draining
> >> the manifold water jacket. As I began to close the
> petcock I
> >> noticed it was loose. I tried to tighten it but it
> ended up
> >> falling off in my hand. After a good close look I
> saw that
> >> the threads were all buggered up.On the petcock as
> well as
> >> the hole. I thought about running a tap in to maybe
> sweeten
> >> up the threads but the recess is way to shallow.
> Any advise
> >> would be appreciated.
> >>>
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