[Healeys] Tapping SUs for air filters.
coudesluijs at chello.nl
Thu Nov 22 08:34:00 MST 2018
That thread is way to large to use, that would be equivalent to M10. The
normal size would be M6 or about 1/4".
Op 22-11-2018 om 15:15 schreef simon.lachlan at alexarevel.plus.com:
> I’ll be removing my carbs soon in order to achieve clearance for
> raising (the front of) the engine. (Harmonic balancer installation).
> So, it struck me that I may give my 3 HD6s another go. Swap them with
> the current setup.
> Thinking it through and looking at the big box of bits, I recalled
> what a pain it is to get the nuts and two washers onto the bolts that
> hold on the air filters. I have French manufactured K&N lookalikes.
> The bolt starts inside the filter, goes through the carb and gets two
> washers and a nut. Very awkward to deal with those nuts and washers. PITA.
> I thought that I might put in helicoils then I thought “Why not tap
> the holes?”
> The holes on my HD6s are 11/32” or 8.8mm.
> I am no engineer but it seems to me, from looking at tables on Google,
> that I could use a 25/64” drill bit and tap them out to 7/16”. I have
> both the drill and the tap but would like some expertise applied to
> the issue before I start drilling.
> Any input would be much appreciated.
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