hey all just wondering how you go about calibrating the speedo when you do engine conversions etc. ive got a sss stanza gearbox on the back of an l18 in my 120y.

get onto speedscreen. $110 and they have a geared calaibration box.

You have to count how many rotations of the cable over a 10m distance (so you can roll the carr your self). thats providing you dont do a diff change or tyre size changes etc. they can re gear it if you do change any of those things though

here

i need to get one too once i get car back and count the revolutions of the cable.

Or you can do it yourself. Various Nissan speedometer gears are $10-$15.

http://datsun1200.com/modules/mediawi ... r#Speedometer_Calibration

only good if you can get a 20t 0r 20-25t cog in my case, reads 90kmh when doing about 65kmh currently ;)

ahh this is going to be difficult isnt it? haha. i will probably be using a ute diff or possibly even r31 then want 15 inch wheels on too. this is going to get fun.

go the speedscreen option like unfam said.. got mine from there
only cost $30 to rear gear if you change ratios/tyre diameter etc.

plus they can make it so the cable can attach on different angles apparently. so pretty good if space is at a premium. would be good if reverse sensors could do the same :(

$30 is great price. That's the way to go.

its still $110 for the unit- $30 to get it re geared in future if you need to eg change in diff ratios etc.