Alan,
The throttle switch is there to prevent disengaging the O/D when there
is reverse torque on the drivetrain--i.e. coasting--which could damage
the internals.
I asked about the "53 BJ8" because Austin-Healey 3000 BJ8 models
were produced from November of 1963 and December of 1967 (yes,
I know one more was assembled in 1968). Maybe you have a BN1, or
a '63 BJ8?
bs
********************************************
Bob Spidell San Jose, CA bspidell@pacbell.net
'67 Austin-Healey 3000 '56 Austin-Healey 100M
********************************************
> Bob,
>
> Thanks for the lesson in technique.Hope when I blip the throttle at the
> stop light some hot rodder isn't considering it a challenge. I see
> little reason to keep the throttle switch. If I plan to pass someone I
> could just flip the switch to normal. Seems its the only reason for the
> switch?
>
> Bought my 53 BJ8 from a guy living in Madison, WI who had taken it
> completely apart years ago. It was a "basketcase" or should I say "boxes
> and bags case".
>
> Bob Spidell wrote:
>
>> This should probably be re-subjected to "O/D Technique," I suppose.
>>
>> Anyway, my O/D tecnhique is a follows:
>>
>> a) on "upshift" (from straight 3rd or 4th to 3rd-O/D or 4th-O/D) I just
>> flip the fascia switch at or near WOT. The result is very similar
>> to an automatic transmission upshifting
>>
>> b) for "downshift" (from 3rd-O/D or 4th-O/D to straight 3rd or 4th) I
>> push the clutch in a little (inch or two), rev the engine a little
>> and throw the
>> switch. If done just right, this results in an almost
>> imperceptible downshift;
>> the only effect is an increase in engine speed.
>>
>> I have 140K+ original miles on my O/D, and I've gotten 80K miles--and
>> counting--on
>> my latest clutch so I think this technique is fairly friendly to the
>> machinery.
>>
>> Alan: yes, that's normal for an O/D. The throttle switch will keep
>> the O/D
>> engaged until the throttle is opened something like 3/16" measured at the
>> stops (probably around 1,500 - 2,000 RPM). BTW, you didn't get your
>> "53BJ8" off of eBay by any chance? ;)
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