[Healeys] Tapping SUs for air filters.

[josef-eckert at t-online.de]

So you want to destroy three carburetter bodies???
What do you expect from the three HD6s?? More horsepower - nope!! More fuel 
consumation!!!
 
 
 
 
-----Original-Nachricht-----
Betreff: [Healeys] Tapping SUs for air filters.
Datum: 2018-11-22T15:49:39+0100
Von: "simon.lachlan at alexarevel.plus.com" 
<simon.lachlan at alexarevel.plus.com>
An: "Healeys" <healeys at autox.team.net>
 
 
 

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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