can anyone please tell me what the mod is thats done to a saph rev clock to work on coilpack.

 

Its detailed in the instructions when you buy the coilpack isnt it?

Im sure I have a copy somewhere, failing that im sure stu has a PDF

At least you CAN do it on a saph, no definitive fix still on a 3 door one that im aware of

Im going to try the diodes route on mine.

 

whats your email mate, ill forward the on i got off stu

 

apparantly the mod has been done and it did work fine but its started playing up now giving false readings it never goes above 5k now and seems to read about 50 % of true rpm. im wondering what i can check or if i need to get a new rev clock and have the mod done whatever it is.

 

hi thatd be great my email is billycossie@fsmail.net
thanks

 

email sent

 

Could you also mail it to me? My e-mail adress is Bartvandeun@hotmail.com

Thanks!

 

Another thing to check - make sure you are still getting full battery voltage up in the high rev range - remember, on boost, the fuel pump will draw much more current and the voltage the ECU/IAW sees will drop significantly if the wiring is old and past its best. The IAW needs above 12 volts to make the rev counter work efficiently, any less and the rev counter will fail to work.

How do I know this - I found out accidentally when a coolant hose split, thus soaking the alternator, reducing the output to 9 volts and the rev counter stopped working utill the alty was producing the correct voltage once again.

 

3 door tachos work with a TACHO driver(Ł30), and what I am using on my sapphy tacho.
tabetha

 

Is that the ones dave walker sells?

 

Ł30?

I hope he is not selling the diode mod packaged up for Ł30.

Should cost 58p for the diodes from maplins.

 

battery voltage is 14v flat out on secs so thats all good.

 

thanks mate is that just a piece of wire joining the 2 connections ? im gonna get a new rev clock i think so just wana check what it is i gotta solder into it.

 

just buy a decent accurate rev counter the standard one is not accurate and only shows 7k

 

3 diodes, the case, some instructions, the time to write it all, 30 quid sounds perfectly typical to me, cant see why you would hope one way or the other, not like he could afford to do it for a fiver after all!

 

Done my saff one as per Stu's instructions works fine

And the secs reads the same too(SOMETIMES)

Paul