speedo problem

[skidkid]

well the problem I have is I love the retro speedo in my mazda b2200 truck but I'm fitting a bmw m51 tds engine with getrag 5 speed box and hear is the issue bmw runs hall sensor type speedo set up on rear diff so there is no speedo cable take off on box now iv seen adapters to connect to a gearbox to give out electrical signal for electrical speedo but can you get an adapter to convert electrical signal into working a conventional speedo

[colnerov]

Hi, try Dakota Digital, they have two ways of doing it. They have an electronic sensor either on the axle or the back of the g/box, which sends a signal to a motor and gearbox to drive a cable up to the speedo head. The other way is they convert your speedo to digital, it looks the same except the odometer is a small LCD screen. The first way is apparently about £250 plus you have to get a new cable made up. The second way I'm afraid I don't know how much.

Colin

[ejenner]

I'd try installing the BMW speedo behind your original dial facia and to push your original needle onto the BMW speedo motor spline.

Get hold of the BMW dials cluster and see if you can take the guts out and transplant to your Mazda binnacle.

If you find the numbers on the dial aren't sufficiently close (corroborate using a sat-nav which shows speed) it would be easy enough to replicate the style of the dial with different spacing.