3.7 Diff

Post by **wanderinstar** » Mon Sep 01, 2008 2:03 pm

Whats wrong with the 1100 head. It looks just the same as the Minor one, with the addition of a green warning light at the top. Which is what I wanted for the indicator warning light. At the moment I am using the left hand amber one , used for blocked oil filter I think

Post by **moggiemadman** » Mon Sep 01, 2008 2:42 pm

wouldnt this fit in with a moggie ?
http://cgi.ebay.co.uk/3-3-8-ELECTRONIC- ... .m20.l1116

Post by **wanderinstar** » Mon Sep 01, 2008 3:05 pm

Roy, The diff is here, not a great deal.

Sorry it didnt come out, just a load of figures, basically 11mm diff in dia and 34.56mm diff in cirumf. 1.82%

http://www.alloywheels.com/tyrecalc.asp

Post by **bmcecosse** » Mon Sep 01, 2008 3:53 pm

Hmm - when said '1100' head - I though you meant from an Austin/Morris 1100 car. My speedo in the 1098 Minor is 1504 tpm to match 4.22 diff.

Post by **rayofleamington** » Mon Sep 08, 2008 11:29 pm

the speedo agrees with the flashing signs within about 1 mph - and agrees with 56 mph behind trucks !

I've never had one yet that was anywhere near as close!
Most cars will read close to 60 when doing 90kph (behind a truck)

My current Eurobox is exactly 10% over the sat nav at all speeds. The sat nav itself is more accurate than I ever expected.

Post by **bmcecosse** » Tue Sep 09, 2008 11:35 am

Sat nav will be deadly accurate unless confused by overbridges and perhaps very heavy cloud/rain. My Vauxhall Meriva reads dead on speed as closely as I can see the needle.

Post by **Kevin** » Tue Sep 09, 2008 11:43 am

My current Eurobox is exactly 10% over the sat nav at all speeds. The sat nav itself is more accurate than I ever expected.

Both modern's we have and both our daughters cars are the same.

Post by **Mogwai** » Tue Sep 09, 2008 9:09 pm

Bmc, have you seen this smiths speedo manual. has some bits about calibrating towards the end
http://tr6.danielsonfamily.org/Files/SpeedoRepair.pdf
as you know what tpm you need it should be possible to put the innards from another smiths speedo into your minor one. its how I did mine when I fitted a sierra box & different ratio diff

Post by **bmcecosse** » Wed Sep 10, 2008 1:37 pm

Thanks for that link Mogwai! I'm a bit of a fumble fingers with fine work like that - definitely NOT an instrument mechanic !