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converting xr2i speedo from mechanical to electronic

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Old Mar 21, 2010 | 05:48 PM
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Lightbulb converting xr2i speedo from mechanical to electronic

hi all, i need help !!!!!!!! i need to change my speedo . so it runs electronicly , it runs via mechanical at the mo. any ideas?




cheers dave
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Old Mar 21, 2010 | 06:22 PM
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dont know what youre gonna do dave my mates just dropped in a small block chevy in to my granada and iver got the same problem the american cable fits in the box but the outher ends is different nite mare
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Old Mar 22, 2010 | 10:02 AM
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Originally Posted by carfreak620
hi all, i need help !!!!!!!! i need to change my speedo . so it runs electronicly , it runs via mechanical at the mo. any ideas?




cheers dave
Just buy a eelctronic speedo, see if there is a electronic speedo sender for your gearbox, but doubtful, so simply connect a hall sensor, ie crank to a bracket and point at something like an abs ring, or wheel bolt etc, or even bolt on driveshaft.
This will generate your square wave signal needed, ie on off signal for the speedo, if there are say 6 bolts it is counting for each wheel revolution, times this by the numbr of wheel turns per mile, say 500, so we have 3000 per mile, now input this into the electronic speedo to zero/calibrate it in.
tabetha
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Old Mar 22, 2010 | 10:06 AM
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Originally Posted by andym209
dont know what youre gonna do dave my mates just dropped in a small block chevy in to my granada and iver got the same problem the american cable fits in the box but the outher ends is different nite mare
Speedy cables will make a one off cable, but I would think possibly your speedo is electronic ?
If it is electronic find a electronic speed sender for the gearbox, if you can and again speedy cables can match the two calibration wise, if you can't find a electronic sender for the box simply use a hall sensor on a wheel bolt, prop bolt etc, and use that signal, again speedy cables can match the two together calibration wise.
tabetha
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Old Mar 22, 2010 | 01:45 PM
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Doesn't the 2i or FRST have an electronic Speed Sensor on the Gearbox anyway? The cable fits into the sensor which then bolts to the gearbox. You could splice into this and get a feed?
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Old Mar 23, 2010 | 07:09 AM
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most 3.5 fez's have the speed sensor on the box, you'll have to changed the instrument cluster aswell or get a seperate speedo, ive changed my mk3 fezz to electronic and used the clocks from a zetec-s, easy enough
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Old Mar 23, 2010 | 12:41 PM
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Why do you want to change it? Going for a Opel/Vauxhall LCD unit or the VW Digifiz?
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Old Mar 23, 2010 | 08:02 PM
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thanks for the help guys !!!! um im changing it cause im tracking it , but want to drive it to track !
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