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Posted

okay , I now have a set of UK clocks , ( thanks to Mondo), now the UK clocks have 2 potentiometers that can be used for adjustment, does anyone know which one does what.? or where to find a guide on adjustment.

 

Ta

 

Sayers

Posted

Which is easier, fitting a NA Speed sensor, or turning the potentiometers on the Speedo, ?? how much is a NA speed sensor ? anyone got one ? or back to the original , does anyone know how to use the potentiometers to correctly adjust for different speeds ?

Posted

for a NA diff you won't be able to adjust enough with the potentiometer method if the cluster is still standard (you will need to modify the cluster by replacing a couple of resistors with different values)

The potentiometer can only be used for fairly small adjustments if you still want it to show precise speeds over the whole range.

 

So, unless you have the electronic equipment to modify and re-calibrate the speedometer, the easiest way is to fit a NA speedsensor (actually you only need to swap the speedsensor-gears)

If you don't have the NA gear, you can order one here: https://conceptzperformance.com/nissan-oem-300zx-speed-sensor-gear-pinion-manual-non-turbo-32743-30p20_p_2536.php

 

NB: if you have two potentiometers on the cluster, then one is for offset-adjustment and the other for range-adjustment

Posted

I thought you couldnt fit a na sensor in a tt box? The na sensor cog is smaller, so wouldnt touch the box cog, unless someone has designed a relocation bracket?

 

When i put a tt box in my na this was the case. So i bought an adjustable speedo converter. You fit it, drive , note speed on speedo and on sat nav, look up provided chart and enter value into converter

[sIGPIC][/sIGPIC]

Posted

> I thought you couldnt fit a na sensor in a tt box?

 

maybe you are confused with an auto box ?

NA/TT Manual transmissions are identical apart from small differences in bellhousing

 

> I am looking for accuracy up to a ton.

 

you may be able to get it somewhat accurate from 0-70 mph using the potentiometers, but the faster you go the higher the deviation from actual speed. (speedo will read more then actual speed)

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