Jump to content
SAU Community

Rb20 Speed Sensor


SLT513
 Share

Recommended Posts

Hey guys I've got an S13 with an rb0det/box, and speedo doesnt work, ive got the ca18 speed sensor though from which i heard works and is a mechanical one. Just wondering how do i connect this up as i cannot find any diagrams thanks!

Link to comment
Share on other sites

RB20 speedo drive is a mechanical drive at the gearbox, with mechanical cable to the speedo head, where the speed sensor (for the ECU and HICAS etc) is located. If you meant "speed sensor" as in "speed sensor" then it is in the dash. If you meant "speed sensor" as in "speedo drive" then yes, it's in the gearbox.

Both the CA and RB20 boxes are mech speedo drive. You will need an RB20 box's drive. I wouldn't expect the CA one to fit the RB box. Might, but wouldn't count on it. With luck though, an S13 cable might connect to the RB20 drive.

This has been done many times though, so I'm sure the info on what you actually need to do is out there.

Link to comment
Share on other sites

RB20 speedo drive is a mechanical drive at the gearbox, with mechanical cable to the speedo head, where the speed sensor (for the ECU and HICAS etc) is located. If you meant "speed sensor" as in "speed sensor" then it is in the dash. If you meant "speed sensor" as in "speedo drive" then yes, it's in the gearbox.

Both the CA and RB20 boxes are mech speedo drive. You will need an RB20 box's drive. I wouldn't expect the CA one to fit the RB box. Might, but wouldn't count on it. With luck though, an S13 cable might connect to the RB20 drive.

This has been done many times though, so I'm sure the info on what you actually need to do is out there.

Wrong

CA18DE/T uses an electric speed sensor

I converted my 180SX with a RB20DET many many years ago and used the CA18DET sensor and even gearbox mount on the RB20DET gearbox

Worked tits

Link to comment
Share on other sites

That's more like it, John.

Mine was previously an auto and they have different diameter sender to the manual, hence the machining required on mine.

Found out much later that I could have bought an electronic sender to suit the manual box from Adelaide Jap Motorsport.

  • Like 1
Link to comment
Share on other sites

Apparently it's not pouring oil out everywhere so probably has the speedo cable still there but just cut off.

Should be a keeper plate with a 10mm head setscrew holding that in place.

Once the keeper is removed, the cable drive unit will pull out from the extension housing.

Do a tooth count on the pinion so you'll have an idea if the speedo is out.

R32 should have had 4.3 diff as would the S13 so things should be OK.

Push your electronic unit in and fit the keeper plate.

Connect up the plug, hope for the best.

Your 20 ecu will need a speed signal, wiring been done?

Link to comment
Share on other sites

Speed signal should still come from the dash to the ECU. On the RB25 speedo setups, the sender creates a +/- sawtooth signal and the speedo head converts that into a 0-5v square wave for the ECU. I'd imagine that all Nissan's e-speedos are the same.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share



  • Similar Content

  • Latest Posts

    • Chinese parts can be good, it's all in the quality assurance, and materials, but, that costs more, but, typically not alot more, it is up to the customer who is getting the parts made, some are happy to pay more for quality good QA and materials because the savings are in the cheap labour costs, so they can sell a quality product at a lower price point, other customers who are getting parts made give no farks and want their products to be as cheap as possible for maximum profit, so minimal QA and average materials  Hence why some Chinese parts are crap, whilst other are good Much like parts and other stuff made in different countries around the world, including "made in Australia", "made in Japan", "made in 'Merica" branded gear
    • Agree with Bogan bloke above. I like running quality tyres on my street driven cars. Wife's daily as well as my daily have Michelin PS4, good tyre that does everything you'd expect without fuss and reasonably priced for popular sizes that aren't enormous. Skyline had Yokohama on it for many years but have recently fitted zestino tyres. Just did a quick Google and they're actually Chinese made (jap designed apparently). Surprisingly they grip really well, wet and dry and haven't died, YET. Obviously on the higher end of CCP tyres but still China nonetheless. 
    • My view is to put the best tyres your budget allows for a daily, there is no run off or kitty litter on the street, only cars, bikes, gutters, trees, kids .......as for the track, it's not like street driving where you need to deal with all the thousands of Muppets that are cutting you off, slamming on their brakes for animals or pedestrians that wander into the road Every mm the tyre brakes better could be the mm's required to not running over a kid who runs out in front of you, especially if it's wet, wet weather is where most cheap tyres fail horribly, either when hard braking, or quick evasive turning even at lower speeds My Honda came with Tracmax, whilst they worked in the dry doing legal road speeds, in the wet they were rubbish  After some googling reviews I tried some Hankook Ventus Prime 4's, the difference in the dry is noticeable, but in the wet the difference is chalk and cheese, IIRC they were around $150 a tyre fitted, so for only $600 for 4 news tyres, that are lasting really well, I have tyres that actually work at legal road speeds in the wet If they save me once from "an unfortunate situation" they have paid for themselves  Tyres are one of those things that can save your life when driving, and as most of your time driving is in your daily, your daily tyres are more important than a tyre on a performance car that knocks of a second or 2 on the track My daughter is a copper, she regularly drags dead or injured people out of cars because they lose control, or run up the back of cars in the wet TL;DR. Buy the best tyres that might help save your life if $hit goes down https://www.bitre.gov.au/publications/ongoing/road_deaths_australia_monthly_bulletins  
    • Thanks mate much appreciated I'll start going through them because the subjects look important 
    • Yeah I sold it to a mate for $1000, I had no where to store it.. lol I believe it became a drift car.
×
×
  • Create New...