s13 with an rb25 gearbox speedo reading - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

gaz_moose · 02-24-2017, 10:44 AM

I have a euro spec s13 that has the CA dash clocks fitted. it has a VVT engine with a RB25 gearbox. with the RB speed sensor connected the speedo reads roughly half actual speed and so does the trip meter.

most people over here in England either just run with the speedo disconnected or use a Dakota digital box, I don't want to use the Dakota box as I think they are rubbish.

what do you guys do to get your speedo's to work correctly? or do your KA clocks just work with the RB gearbox?

searching around suggests that a none turbo z32 speed sensor with the r33 gear fitted should work, but then some people say it don't. some people also say you can fit 180sx clocks and strip them down and adjust a potentiometer that's in the rear.

Nismoboy1992 · 03-19-2017, 11:27 PM

Try this buddy, let me know if it works! It's a speedo calibration from wiring specialties website.
https://drive.google.com/file/d/0B9F...NRUkppWGs/view

gaz_moose · 03-20-2017, 04:49 AM

I fitted a Dakota digital converter to my s15 when I removed all of the ABS stuff, I found that it was not possible to calibrate it to give accurate readings across all of the range. ie... you could get it to read spot on at 30-40mph but 70mph would be way off actual speed. and an actual 100mph would read 140 on the clocks etc..

my tacho (RPM) works fine as you can correct that by just soldering in a 10k resistor.

02-24-2017, 10:44 AM	#1
gaz_moose Zilvia Member Join Date: Mar 2008 Location: engerland Posts: 242 Trader Rating: (0) Feedback Score: 0 reviews	s13 with an rb25 gearbox speedo reading I have a euro spec s13 that has the CA dash clocks fitted. it has a VVT engine with a RB25 gearbox. with the RB speed sensor connected the speedo reads roughly half actual speed and so does the trip meter. most people over here in England either just run with the speedo disconnected or use a Dakota digital box, I don't want to use the Dakota box as I think they are rubbish. what do you guys do to get your speedo's to work correctly? or do your KA clocks just work with the RB gearbox? searching around suggests that a none turbo z32 speed sensor with the r33 gear fitted should work, but then some people say it don't. some people also say you can fit 180sx clocks and strip them down and adjust a potentiometer that's in the rear.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

03-19-2017, 11:27 PM	#2
Nismoboy1992 Leaky Injector Join Date: Aug 2013 Location: Louisville Posts: 118 Trader Rating: (3) Feedback Score: 3 reviews	Try this buddy, let me know if it works! It's a speedo calibration from wiring specialties website. https://drive.google.com/file/d/0B9F...NRUkppWGs/view

03-20-2017, 04:49 AM	#3
gaz_moose Zilvia Member Join Date: Mar 2008 Location: engerland Posts: 242 Trader Rating: (0) Feedback Score: 0 reviews	I fitted a Dakota digital converter to my s15 when I removed all of the ABS stuff, I found that it was not possible to calibrate it to give accurate readings across all of the range. ie... you could get it to read spot on at 30-40mph but 70mph would be way off actual speed. and an actual 100mph would read 140 on the clocks etc.. my tacho (RPM) works fine as you can correct that by just soldering in a 10k resistor.