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Thread: V6 and 4 cylinder rev counters

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    V6 and 4 cylinder rev counters

    Hi, am looking at retrofitting a rev counter on my pinto, I need to use either cortina or Granada clocks
    does anybody know if there is any difference between 4 cylinder clocks and v6?

    is it modifiable with resistors?

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    Re: V6 and 4 cylinder rev counters

    If the tacho's take their trigger from the coil neg. there shouldn't be a difference - one pulse / revolution. If the feed is from a ecu it could be 1, 2 or 3 pulses. Safer to stay away from a 6 cylinder derived tacho for a 4 cylinder engine methinks.

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    Re: V6 and 4 cylinder rev counters

    Until you have the clocks and open them up, no way to know.

    One set of granada clocks I used had a little trim pot on the circuit board itself, so a little twiddle of this and it worked fine going from 6cyl to 8cyl.

    Or I've pulled the wiring to the coil on the needle before and stuck a little pot on this to reduce the reading. Doubt you could increase it though.

    Or there are various pulse adjusters around for not much money that should allow you to use almost any type
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    Re: V6 and 4 cylinder rev counters

    no, it will not work correctly.
    4 pulses per revolution against 6 pulses per revolution.
    Last edited by daniele; 31-03-2017 at 12:35.

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    Re: V6 and 4 cylinder rev counters

    It would be fed direct from the coil not a ecu, but sounds like it could be a bit of a problem. Would be almost luxury with one lol, might have to give it a go if they come up cheap though

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    Re: V6 and 4 cylinder rev counters

    Quote Originally Posted by rs mark View Post
    It would be fed direct from the coil not a ecu, but sounds like it could be a bit of a problem. Would be almost luxury with one lol, might have to give it a go if they come up cheap though
    if its a feed from a coil yo will deffo get wrong rpm

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    Re: V6 and 4 cylinder rev counters

    But easily fixed.
    9.85 @ 145mph 202mph standing mile

    https://www.youtube.com/watch?v=Ss_c7fML3rw

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    Re: V6 and 4 cylinder rev counters

    Quote Originally Posted by stevieturbo View Post
    But easily fixed.
    i dare say, i just have no idea how to

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    Re: V6 and 4 cylinder rev counters

    I already explained.
    9.85 @ 145mph 202mph standing mile

    https://www.youtube.com/watch?v=Ss_c7fML3rw

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