W5X Speedo Drive Comparision (Steel plate vs Alloy plate)

[Norbie]

I call shenannigans on Toyota.

[oldcorollas]

how many different dif ratios, and how many diferent rev/km speedos were available?

[wilbo666]

how many different dif ratios, and how many diferent rev/km speedos were available?

I only know of the 637rev / km (not 100% sure on that number but it is close to that).

Diff ratios were 3.58, 3.72, 3.909, 4.1, 4.3 at least.

Another question, do JZA80, JZA30, JZX81/91 run a digital speedo sender or is it cable drive still (Or a better question, what actually uses the digital senders?).

Cheers
Wilbo

[CrUZida]

Everything from Series2 MX83 onwards is electric.
Timeline would be roughly early 1990

[CrUZida]

As for what uses what

3.42 - 11 - 30
3.58 - 11 - 32
3.73 - 11 - 33
3.91 - 11 - 35
3.91 - 10 - 31
4.10 - 10 - 33
4.30 - 10 - 35
4.30 - 9 - 31

[omy]

Where do you buy them from?

[CrUZida]

Toyota or a wrecker

[omy]

I remember a topic that had parts numbers of the different one's but can't for the hell of me find it :huh: anyone know?

[82MKII]

As for what uses what

3.42 - 11 - 30
3.58 - 11 - 32
3.73 - 11 - 33
3.91 - 11 - 35
3.91 - 10 - 31
4.10 - 10 - 33
4.30 - 10 - 35
4.30 - 9 - 31

Another one to add to the list:
3.73 - 11 - 32.
This is what was in my MA61 from the factory (so far as I can tell). The box is a W57.

[CrUZida]

I'd have to check the maths, because all those ones listed will put the speedo within 1-2% of being correct.

The one you listed will put it out by up to 4%, which is not something Toyota would have done from factory.

[omy]

I have a 10/32 was not listed so does that mean it is not common?

[CrUZida]

What car was it on, and whats the stock tyre size?

[Norbie]

Surely the correct speedo ratio would have as much to do with tyre diameter as diff ratio?

[CrUZida]

*most* W5x'd cars had approximately the same tyres.
Running around the 626-628mm diameter.

225/60/14 - 626mm
205/60/15 - 627mm
195/70/14 - 628mm

That list I wrote was made for MA61's, so was based around 628mm tyres.

[Norbie]

Well you would expect that for a single model, but I was talking across the board.