I hope the pistons aren't different; I bought a pair of TR3 carbs for spare
parts for our 100M.
Bob
On 2/23/2012 4:26 PM, Bert Van Brande wrote:
> My guess: SU had a generic number in the casting (AUC6040) and as they
>machined these throttle bodies for various
> applications they became application specific and got a different part
>number. So they would etch a more specific
> number, ie 6047. A triangular tag identified the carburetor application
>itself.
>
> So yes, TR3A H6 rear throttle body has an etched number different from the
>100m carb. A clear application difference
> here is that the rear carb left hand side boss is drilled for the fast idle
>cam. On the 100m it's on the right hand
> side of the front carb. The front TR3A carb body has no modifications and
>only sports the generic auc6040, no etched
> number. 100m carbs also have a different piston which might affect the
>throttle body, not sure what exactly the
> difference is though.
>
> But again, just my trying to guestimate what they did and eager to learn more
>
> Bert
>
--
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Bob Spidell San Jose, CA bspidell@comcast.net
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