[Healeys] Tapping SUs for air filters.

[Bluehealey]

Why not put captive nuts in the K&N’s and use Allen screws through the flanges of the carbs. Overcomes the spanner access issues.

Alan - from my iPad

> On 22 Nov 2018, at 16:04, Michael Salter <michael.salter at gmail.com> wrote:
> 
> Just remember that if you or anyone else decides to revert to original filters it may be difficult to position them correctly 
> .
> 
> M
> 
>> On Thu, Nov 22, 2018, 10:50 AM Kees Oudesluijs <coudesluijs at chello.nl wrote:
>> That thread is way to large to use, that would be equivalent to M10. The normal size would be M6 or about 1/4". 
>> 
>> Kees Oudesluijs
>> 
>> 
>> 
>> 
>> 
>> 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.
>>> 
>>> Thanks,
>>> 
>>> Simon
>>> 
>>> 
>>> 
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