Speedo Help Required

Quote from Colin on 5th December 2009, 5:17 pmAs most of you know I am currently converting my Jubilee to full factory V8 specification. Part of the changes are the fitment of original V8 gauges (all of which I have managed to obtain). My problem is that I want to reset my V8 speedo to 00000 and having taken it from its housing it does not look like it is easy to reset without removing a lot of bits and bobs-which I am loathed to do as it is fully working. I have tried an electric drill in the back but even with the speedo doing in excess of 120MPH it takes ages, obvioulsy 2 miles a minute. I have since just turned the milo by thumb and have managed a mile every 5 seconds (720MPH) which means that,as I have just under 20,000miles to go, it will take me about 25 hours to get back to zero.
Any ideas would be most welcomed as I fear that I won't have any finger prints left after I've finished.
As most of you know I am currently converting my Jubilee to full factory V8 specification. Part of the changes are the fitment of original V8 gauges (all of which I have managed to obtain). My problem is that I want to reset my V8 speedo to 00000 and having taken it from its housing it does not look like it is easy to reset without removing a lot of bits and bobs-which I am loathed to do as it is fully working. I have tried an electric drill in the back but even with the speedo doing in excess of 120MPH it takes ages, obvioulsy 2 miles a minute. I have since just turned the milo by thumb and have managed a mile every 5 seconds (720MPH) which means that,as I have just under 20,000miles to go, it will take me about 25 hours to get back to zero.
Any ideas would be most welcomed as I fear that I won't have any finger prints left after I've finished.
Quote from phill mc on 7th December 2009, 5:36 pmI didn't realise you could do that with the mileometer, isn't that also illegal? You can always tell a clocked motor because after it's been altered the numbers will never line up properly. I may be thinking of more modern clocks though. Can I assume your trying to go all the way round back to zero using the speedo cable?
I didn't realise you could do that with the mileometer, isn't that also illegal? You can always tell a clocked motor because after it's been altered the numbers will never line up properly. I may be thinking of more modern clocks though. Can I assume your trying to go all the way round back to zero using the speedo cable?

Quote from Colin on 7th December 2009, 5:59 pmHi Phil...Modern cars it is definitely a no no but my jube has had atleast 2 1800 speedo's in her (the second being 20,000 less than the first) plus I am changing/reconditioning virtually all of the running gear and want to start with the V8 speedo at zero to match-TBH if I were to send the speedo away for reconditioning it would automatically be reset to zero.
Hi Phil...Modern cars it is definitely a no no but my jube has had atleast 2 1800 speedo's in her (the second being 20,000 less than the first) plus I am changing/reconditioning virtually all of the running gear and want to start with the V8 speedo at zero to match-TBH if I were to send the speedo away for reconditioning it would automatically be reset to zero.
Quote from phill mc on 11th December 2009, 4:56 pmAh right I see, so it looks like you'l have to persevere with the thumb or send it for recon like you say. I've had a look through my info for the 'B' and I can't find anything about the speedo other than how to take it out and put it back in again. I agree with you about not taking it all apart as they are quite a sensitive piece of kit. If you bought a new one it'll be at zero, but that's more expense.
Ah right I see, so it looks like you'l have to persevere with the thumb or send it for recon like you say. I've had a look through my info for the 'B' and I can't find anything about the speedo other than how to take it out and put it back in again. I agree with you about not taking it all apart as they are quite a sensitive piece of kit. If you bought a new one it'll be at zero, but that's more expense.
