azzy_10 Posted December 10, 2012 Report Share Posted December 10, 2012 hi all just put a ke70 5spd in my ke30 and my speedo is out 20kph out when I'm doing 100 it says I'm doing 124kph at a 100 from my gps wanted to know can i change my speedo gear from my 4spd will that work Quote Link to comment Share on other sites More sharing options...
coln72 Posted December 10, 2012 Report Share Posted December 10, 2012 Mine did this when I did the same conversion. Didn't stress me. Liked the look on peoples faces when I was doing "130km/h" on the freeway :) Quote Link to comment Share on other sites More sharing options...
azzy_10 Posted December 11, 2012 Author Report Share Posted December 11, 2012 yeah but i want an acurate spedo thats says I'm doing a 100kph not a 120 Quote Link to comment Share on other sites More sharing options...
you_nes Posted December 11, 2012 Report Share Posted December 11, 2012 Accurate is a relative term when your talking old corollas. My ke55 with a Ke55 5 speed, and correct diff is 10% out and will be forever more. (I think it is because the factory rolling radius tire is taller than the common sizes found now) There is a mob in Melbourne who make converter boxes that can step the speedo cable speed up or down without having to disassemble a gearbox, but their name escapes me at the moment. Have used their product for a supra-box-in-cruumydoor-conversion and it worked quite well. Quote Link to comment Share on other sites More sharing options...
coln72 Posted December 11, 2012 Report Share Posted December 11, 2012 Accurate is a relative term when your talking old corollas. My ke55 with a Ke55 5 speed, and correct diff is 10% out and will be forever more. (I think it is because the factory rolling radius tire is taller than the common sizes found now) There is a mob in Melbourne who make converter boxes that can step the speedo cable speed up or down without having to disassemble a gearbox, but their name escapes me at the moment. Have used their product for a supra-box-in-cruumydoor-conversion and it worked quite well. If your that worried about it there a a couple of options. grab a few different speedo gears from the wreckers and suck it and see use your GPS to mark the speedo at various points for 40, 60, 80, 100, 110km/h use a speedo corrector as above. Talk to an instrument repair place. May be able to recalibrate your speedo Quote Link to comment Share on other sites More sharing options...
azzy_10 Posted December 15, 2012 Author Report Share Posted December 15, 2012 old 4 spd was accurate just this 5 spd isnt and i have to keep the gps on charge all the time ill try new gears soon Quote Link to comment Share on other sites More sharing options...
jay_howie Posted December 15, 2012 Report Share Posted December 15, 2012 not the best option but would an aftermarket speedo gauge be a possible solution? Quote Link to comment Share on other sites More sharing options...
coln72 Posted December 17, 2012 Report Share Posted December 17, 2012 . Talk to an instrument repair place. May be able to recalibrate your speedo My old man did this to a truck. Got sick of the drivers complaining that it was slow and would only do 100km/h. Sent the speedo off and got the repair place to adjust it to read 10km/h higher than it actually was doing. Drivers were happy until they found out what he did 4 years later Quote Link to comment Share on other sites More sharing options...
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