[Healeys] Carb tuning kit WAS: HS4 Tri-carb tuning

Bob Spidell bspidell at comcast.net
Tue Jul 7 09:24:35 MDT 2020


I don't have mine handy, but from memory:

The two black plastic rod-looking things go into the center of the 
vacuum pistons. In those go the 90-deg bent wires. With these you can 
see the pistons rise and fall, so as to even airflow. They also allow 
ballpark 1/32 piston lifts to check mixture.

The small brass plug-looking thing is a jet-centering tool that goes in 
place of a jet; very handy if you're doing a complete overhaul and 
replacing the jets.

By far the most useful tool is the small wrench that looks like the tool 
some people use to floss; it's the only way I can get to the jet 
adjusting nuts on my BN2. Any other tool--wrench, pliers, etc.--would be 
almost impossible to use with the carbs on the car.

All in all, a simple but useful collection of tools. Did I miss any?


On 7/7/2020 4:41 AM, Tom via Healeys wrote:
> I've always wondered:   what do each of those little tools in the 
> tuning kit do?
> - Tom
> On Mon, Jul 6, 2020 at 10:08 PM John Spaur via Healeys 
> <healeys at autox.team.net <mailto:healeys at autox.team.net>> wrote:
>     Bob, raising the piston 1/32” is not my issue. I am wondering why
>     the engine stalls when the center carb piston is lifted all the
>     way up and the others don’t stall the engine when lifted all the
>     way up. I sent another post with a link for that. The carbs are
>     well synced, I used the S.U tuning kit to check the piston lift
>     and they are spot on.
>     *From:* Healeys [mailto:healeys-bounces at autox.team.net
>     <mailto:healeys-bounces at autox.team.net>] *On Behalf Of *Bob Spidell
>     *Sent:* Monday, July 6, 2020 6:32 PM
>     *To:* healeys at autox.team.net <mailto:healeys at autox.team.net>
>     *Subject:* Re: [Healeys] HS4 Tri-carb tuning
>     After much effort and consideration, I decided there must be some
>     Brits who wrote that 'procedure' laughing their asses off knowing
>     there is no practical* way to lift the pistons exactly 1/32"
>     * But you can, if you have the little wire thingies in the poor
>     man's tuning kit--actually quite useful--stick the wire thingies
>     in the piston and gauge the piston rise; the wires themselves are
>     pretty close to 1/32" thick

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