I don't know about the standard gearbox, but the pinion drive in the O/Drive is
metal.
Vic
JACranwell@aol.com wrote:
> Mike,
>
> To mis-quote Arthur Conan-Doyle, "when you've eliminated all but one cause,
> whatever is left must be the suspect"
>
> The only suspect left in your case is the speedo drive pinion, which is
> removable, in-situ. I'm pretty sure this is nylon, so if the gear is
> stripped, there should be no collateral damage to the gearbox. A new pinion
> should have your speedo running again.
>
> As to the speed at 3,500RPM, if by stock you mean without O/D, then the SI
> does 17.3MPH in top gear per 1,000RPM. That gives you 60.55 MPH at 3,500.
>
> The above is as per the factory manual, and assumes you have the
> non-overdrive 3.89:1 differential.
>
> Having said that, you should not rely totally on the rev-counter reading, as
> they are not always as accurate as they might be. Non-standard tyres will
> also make a difference.
>
> Cheers,
>
> Julian.
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