5 replies to this topic

[craig 1010cc]

Having done some searching, I can't find an answer to this.

 

I'm in the process of doing a full MPI conversion into Pootle (my 85 city E) including the full MPI wiring loom. I am retaining the centre speedo and the smiths dials I have run for the past 16 years. Water temp, oil pressure and the warning lights seem easy enough, but how is rev counter wired in? 

 

The rev counter is a 80mm smiths (same as this

https://www.minispor...ome-black.html 

which I bought new 16 years ago and was last running on late electric ignition dizzy set up) with a number of switches at the back. The OEM feed wire (with the bullet connector?) will provide the feed, but what configuration of the switches do I need? I've seen the conversion used in the past, so I assume they weren't there just for looks and it can be set up right

 

Cheers in advance

 

Craig

[cian]

Yes that is correct but you need a rev counter that reads 2 cylinders and not 4 as the mpi ignition system is a “ wasted spark “ if you put a rev counter for a four cylinder car it will not work

My experience others may say otherwise

[craig 1010cc]

Done some more digging, and I have a Smiths RCV1004-00CA rev counter, which is semi programmable and has 6 switches.

 

I've found the instructions for it here

https://www.caigauge.../pil019-367.pdf

 

previously, for my old carb'd engine with a lucas electronic ignition i had then set

1=off

2=off

3=on

4=off

5=on

6=off

 

So following the instructions, I went for

1=off

2=off

3=on

4=on

5=on

6=off

 

I fire up with it all connected today and at tickover it hardly moves (100rmp or so), but does rise with the rev's

 

Any thoughts

[genpop]

according to the wiring diagramm you have to connect to C159-25 from ecu, then I would try old and new switch settings

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[viz139]

What you need is one of these

http://trigger-wheel...en-uk/p129.html

 

Connect the two coil wires WS and WB to the two inputs of the modual the the output goes to the tacho

[craig 1010cc]

Ended up getting a new Rev counter from rally designs (only £60, much cheaper than a smiths one, but doesn’t look as good sadly) that would run in 2 cylinders configuration