Which Rev counter Series 1 2+2 123 distributor ?

Technical advice Q&A

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Stevejaguar
Posts: 57
Joined: Mon Jul 18, 2016 10:55 am
Great Britain

#1 Which Rev counter Series 1 2+2 123 distributor ?

Post by Stevejaguar » Sun Jan 24, 2021 9:12 pm

Hi,
I have in front of me 3 rev counters that I have accumulated over the last 23 years and would appreciate it if I could find out which would be the best with the 123 distributor that I am now fitting.

RV7414/06. This is the correct one for my car but was removed as the generator failed. I do have an electronic conversion bought from D Rawle many years ago to allow it to be wired to the coil.

RVI 4610/01. Currently fitted to the car and appears to be wired to the coil. A mod I must have done many years ago. Always seemed to read high with the Lumenition system that I used to have on the car.

Which of these would I get accurate readings from with the 123 distributor?

I also have a third rev counter but it has no Smiths number on it. It has a chrome bezel and the red section is from 6000 to 6500 rpm. Three wires, 2 white and one green. Any ideas what this was originally fitted to?

Thanks
Steve

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Paul bow
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Joined: Fri Sep 25, 2020 7:00 am
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#2 Re: Which Rev counter Series 1 2+2 123 distributor ?

Post by Paul bow » Sun Jan 24, 2021 10:59 pm

Steve I don’t have the definitive answer however I can tell you that my tachometer was the kind that has the looped white wire at the back of it, It reads a pulse, anyhow that tachometer had to be sent away to speedy cables for work after fitting a 123 dizzy, it did not work once that was fitted, but worked perfectly before.
Cost about £170 did a great job, but waited 2 months to get it back ... hope that narrows it down a little
Previously...S1 OTS e type rhd
Regrettably sold it 10years ago!
Presently S1 2+2 manual. (Nut/bolt restoration)

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mgcjag
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#3 Re: Which Rev counter Series 1 2+2 123 distributor ?

Post by mgcjag » Mon Jan 25, 2021 8:38 am

Hi Steve...RVI are the ones that can gave problems with electronic ignition not reading correctly....just search rvi or rvc there is lots if info.......Steve
Steve
1969 S2 2+2 & Building a C type replica

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christopher storey
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#4 Re: Which Rev counter Series 1 2+2 123 distributor ?

Post by christopher storey » Mon Jan 25, 2021 9:02 am

The chrome bezel instrument is likely to be from an XJ12 series 1

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valerea
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Location: East Yorkshire
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#5 Re: Which Rev counter Series 1 2+2 123 distributor ?

Post by valerea » Sat Jan 30, 2021 11:30 am

hi, I had my S1 (66 roadster) rev counter converted by speedograph Nottingham for my 123 distributer.

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