on 5/21/02 11:57 PM, Larry Hoy at larryhoy@prodigy.net wrote:
>> Your numbers don't look right to me. Why would a 67 and a 73 have the
>> same TPM? -- they have completely different
>> transmissions. I think if you read the web site closely you will see
>> that 67 is the same as 62-66 (1040 or 1020), and 68
>> went to 1280 (but with an 80mm dial). Where the upper chart says Oct.
>> 67 - Dec. 67 it is referring to the 68 *model* year.
>
> Yup, I didn't notice that it was 'model' year. Kinda weird the way the
> chart is made. The first line should be combined with the second line.
>
> Me thinks Jim is screwed. .... Except I found on Skye's site info that
> indicates the pinions are 21 and 27 (in conflict with the Moss catalog)
> not 21 and 20. If that is correct and he has the 21 tooth pinion then
> an indicated 80mph would change to 59.2mph if he put in the 27 tooth
> pinion ... Hmm. And that would be too easy.
I saw that, too. But I wondered if they were talking about the same pinions
(they don't seem to be interchangeable between OD and non-OD trannies). It
would be worth investigating, though -- either source could conceivably have
a typo...
I agree about "weird" -- I don't know why that chart made that fine
distinction between various dates in the 68 model year. It may have had
meaning in some context, but not in speedometer specs...
Max
>
> Larry Hoy
>
--
Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires
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