Frederich -
This seems to suggest the cup bearing in the instrument is starting to
lose lubrication, causing the needle to read fast when cold then as it
warms up, gets a little loosened lubrication then starts reading slow.
I might suggest you have a run at the speedo with the speedo rebuild
procedures which is on John Sim's healey website, the sheet tells you
how to lubricate the bearing.
If that doesn't help you may consider getting your speedo rebuilt.
Alan
On 5/29/10, Frederich Ficke <jagwarman@gmail.com> wrote:
> Hello everyone, I was reading about all these speedo issues and have one of
> my own . I have a 65 BJ8 . My speedo is original never been messed with. I
> run 165 15 in tires . But my problem when the speedo is cold it register 10
> mph fast but once it is used for about 10 miles it starts reading correctly
> for a little while then it starts to read 10 mph slower than it should .
> Anyon have any ideas on that one. cable and angle drive has been lubed but
> there has been no change in operation. Thanks for your thoughts
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--
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Alan
'52 A90
'53 BN1
'59 Jag Mk IX
'64 BJ8
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