[Diy_efi] Tapping Metric Injector Threads

[Matt Porritt]

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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