Rb30 Gearbox Speedo For S13 Conversion

[Wangan]

Hi guys

I have an s13 with a rb30 gearbox running an rb25det

I have the speedo cable missing from the gearbox, just wondering if anyone know what kind of speed sensor will fit in there. I have a factory ca18det silvia and I am sure that it has digital speedo (not cable driven).

Any help would be much appreciated!

[GTSBoy]

S13s are same vintage as R32 which had cable drive speedo.

And which RB30 gearbox do you have? The NA one (same basic box as RB20DET and the various 4cyl turbo boxes) or the VLT box (basically the same as RB25DET)?

[Dose Pipe Sutututu]

Incorrect, S13 did not use a cable. They used a sensor and wires to the dash.

On top of my head, I'm sure I just bolted up the CA18 speed sensor to the RB20 box and it worked.

[GTSBoy]

Really? Wouldn't have credited that for the low rent car when the GT car was cable drive at the same time.

[Dose Pipe Sutututu]

I think they used an electric sensor & dash because S13 came with optional head up display which wouldn't really work with a mechanical cable.

In saying that, just try and bolt up the CA18DET speed sensor into your VL/RB20DET box. I did the conversion over 7+ years ago so I've forgotten most of it.

[GTSBoy]

The digital dash and HUD stuff is no obstacle. The R32 etc mech speedos have a 0-5v square wave signal generator in the head to make the speed signal for the ECU. You could hide that part in the back of a fully digital dash and no-one would know the difference. But fair enough otherwise.

[Dose Pipe Sutututu]

Thumbs up for a RB in a S chassis, always have had a soft spot for them and maybe because I'm being bias haha.

One day, RB25DET NEO in a 180SX Type-X... yummy.