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speedo
Posted: Fri Dec 12, 2014 6:40 pm
by dalebrignall
my girlfriends speedo does not work correctally , it sticks and the mile ommeter has stopped working . the speedo is a bronze one .i have got a new one and its black , the bracketry looks different . will it fit baring in mind there are aditional warning lights fitted to the black speedo and the position of the loghts wont allow tweeking of the bracket . i did order a bronze one
Re: speedo
Posted: Fri Dec 12, 2014 8:46 pm
by jagnut66
Hi,
One thing I was made aware of, when asking questions on this topic in the past, is that if your car was originally fitted with a gold (or bronze) speedo then the petrol tank sender unit is not compatible with a black one.
Personally I'd send it back and ask for the one you want or a refund, gold ones are available, try eBay, you just need to check that the speedo reads to the same as your one did, as I believe early ones were only marked to 80 mph.
Does the petrol gauge work on the one you have? If so remove it and keep it, I found they can go wrong and it's always good to have a spare!
My car is from 1963 and was marked up to 90...................... very optimistic those Morris engineers!! 
Best wishes,
Mike.
Re: speedo
Posted: Fri Dec 12, 2014 9:16 pm
by bmcecosse
If the brackets are slightly different - it probably came from a Mini. They are easily tweaked to shape - but as above - the gauge won't work. Is the tpm correct - same as the bronze one?
Re: speedo
Posted: Fri Dec 12, 2014 10:29 pm
by ManyMinors
dalebrignall wrote:my girlfriends speedo does not work correctally
MY girlfriend doesn't even HAVE a speedo
Re: speedo
Posted: Fri Dec 12, 2014 11:21 pm
by mike.perry
The new speedo needs to have the same TPM as the old one, 1504 for 948, 1408 for 1098
Re: speedo
Posted: Tue Dec 16, 2014 5:23 pm
by Matt Tomkins
mike.perry wrote:The new speedo needs to have the same TPM as the old one, 1504 for 948, 1408 for 1098
dont suppose you know the tpm i would need, or a suitable donor, if i were to fit a 3.9 diff do you, Mike?
Re: speedo
Posted: Tue Dec 16, 2014 7:21 pm
by bmcecosse
You just use the 4.22 speedo (1408 although I think some have 1392 tpm - even better! ) - it will read more or less accurately on a 3.9 final drive - rather than high as it does on the 4.22. I have a 1294 with my 3.7 drive - it's dead accurate on speed and miles with 155 tyres.
Re: speedo
Posted: Wed Dec 17, 2014 3:50 pm
by mike.perry
Matt Tomkins wrote:mike.perry wrote:The new speedo needs to have the same TPM as the old one, 1504 for 948, 1408 for 1098
dont suppose you know the tpm i would need, or a suitable donor, if i were to fit a 3.9 diff do you, Mike?
As Roy says, keep the 1408. It overreads on the 4.22 diff but is within 1 mph on a 3.9 diff which is what I am running on my Traveller