Did you reuse the inlet tube? It looks like it is simply pressed into a reamed
1\4 inch hole.
An old needle valve ( soldered shut) will blank off the original opening.
Greg G.
On Oct 25, 2020 11:56 AM, Roger Elliott <elliottr@rmi.net> wrote:
>
> Thanks Greg and Mike,
> I bought a set of M11 1.5 taps (taper, plug and bottom).  They worked
> perfectly for the needle valve. I am glad I got the set. I started with
> the taper, but used the bottom tap to finish up.
>
> So, M11 1.5 is the ticket.
>
> Thanks again guys.
>
> Roger
>
> On 10/21/2020 8:19 PM, Michael Marr wrote:
> > 10.8 mm is within the tolerance for the major diameter of an M11 thread
> > (Max-10.968 mm, Min-10.732 mm), so that may well be what you have.
> >
> > Mike
> >
> > Michael J Marr, P.E., CEng.
> > Albion Technical Services
> > W5918 Hackbarth Rd
> > Fort Atkinson, WI 53538
> >
> > Cell:Â 630-202-0065
> > Email:Â mmarr@albiontechnical.com
> >
> > -----Original Message-----
> > From: Triumphs <triumphs-bounces@autox.team.net> On Behalf Of Greg Gelhar
> > Sent: Wednesday, October 21, 2020 7:48 PM
> > To: 'Roger Elliott' <elliottr@rmi.net>; triumphs@autox.team.net
> > Subject: Re: [TR] Thread of Stromberg 175 Needle valve
> >
> > A machine job shop with thread milling capabilities could do the work. No
> > idea what they would charge. I don't have access to a thread micrometer, so
> > that thread might even be M11 x 1.5 at least that size is on some charts.
> >
> > -----Original Message-----
> > From: Triumphs <triumphs-bounces@autox.team.net> On Behalf Of Roger Elliott
> > Sent: Wednesday, October 21, 2020 3:03 PM
> > To: triumphs@autox.team.net
> > Subject: Re: [TR] Thread of Stromberg 175 Needle valve
> >
> > Thanks Greg,
> >
> > Sounds like finding a tap for that is out of the question.
> >
> > I know I read a post somewhere about someone changing the inlet side for a
> > triple carb set-up, but I have not been able to find it again.
> >
> > Roger
> >
> > On 10/20/2020 3:52 PM, Greg Gelhar wrote:
> >> This could be one of those times where a manufacturer uses a
> >> proprietary
> > thread size. I measure that thread to be   M10.8 x 1.5   an odd
> > ball for
> > sure.
> >> Greg G,
> >> Osseo, MN
> >>
> >> -----Original Message-----
> >> From: Triumphs <triumphs-bounces@autox.team.net> On Behalf Of Roger
> >> Elliott
> >> Sent: Tuesday, October 20, 2020 2:05 PM
> >> To: triumphs@autox.team.net
> >> Subject: [TR] Thread of Stromberg 175 Needle valve
> >>
> >> Hi,
> >> I would like to change the side that the fuel inlet comes in on a
> > Stromberg 175 CD-2. It looks like it will be real easy to do, but the
> > threads on the needle valve don't seem to match anything in my tap set.
> >> Does anybody know what the thread is on the needle valves?
> >>
> >> I know I could get a different carb body, but I am trying to avoid that.
> >>
> >> Thanks,
> >> Roger Elliott
> >>
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