[Diy_efi] Tapping Metric Injector Threads

[Brian Michalk]

Alloy?  My scrap metl is 6061 aluminum.  I use way oil to lubricate; very
sticky stuff.

The 1.5 pitch is specifically for pipe threads which is why I thought it
would be tapered.

Will try a smaller bit tonight.

 Brian Michalk  <http://www.michalk.com>
Life is what you make of it ... never wish you had done something.
Aviator, experimental aircraft builder, motorcyclist, SCUBA diver
musician, home-brewer, entrepreneur and mostly single


> -----Original Message-----
> From: diy_efi-admin at diy-efi.org [mailto:diy_efi-admin at diy-efi.org]On
> Behalf Of Matt Porritt
> Sent: Monday, January 06, 2003 11:49 PM
> To: DIY-EFI
> Subject: Re: [Diy_efi] Tapping Metric Injector Threads
>
>
> I presume you're tapping into alloy?
> Try a smaller (slightly) drill.
> I have references here in a Zeus book for 12 x 1.25 and 12 x 1.75
> but not 12
> x 1.50mm.. Hmmm..
>
> Cutting fluid with tapping in alloy helps.
> --
> Matt Porritt
> RC Race Cars and Supplies
> ICQ #22776813
>
>
>
> On 7/1/03 5:04 PM Brian Michalk wrote
>
> > I've got a Bosch CIS injector, 0 437 502 047
> > It has an M12x1.5 metric thread.  That's 12mm major diameter with 1.5mm
> > pitch.
> >
> > I bought a tap from MSC that I thought was supposed to be
> tapered.  I tapped
> > some scrap metal, and the injector screws into it with a very
> loose sloppy
> > fit.  I will try a smaller drill bit size, but I don't think
> that's going to
> > help.
> >
> > Does anyone know if there exists such a tapered tap, like for
> NTP, except
> > metric?
> >
> > If not, then I'll have to use O-rings.
>
>
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