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I've just done a V8 conversion using a GQ manual box in my GU and the speedo is a mile out, we're talking double the speed all most. 185km on the speedo is actually only 100km, looks impressive but I need to fix it.

Has anyone done this conversion before and did you just swap speed sensors to fix it?
 

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Nissan speed sensors can either have 8 pulses per rev of speedo sensor
or 16 pulses
ive got abit of specs of skyline and silvia speedo sensors but never checked what patrol ones are

I guess u need to find the same shape speedo sensor but with half the pulses of your one

so you can either check what yours is and find one with half the pulses but the same size and shape so it fits into your transfer

or fit a speedo pulse converter and set it to divide by 2
if you go this way then u can easily adjust your speedo each time u change diffs or tyres
most these modules can adjust as fine as 1%
ive got afew different types if u get stuck
 
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