Series 1 Rb25Det Into R31 Help.

[Jarrrrrrrrrrod]

Hey all this is my first post so don't, let me know if I'm doing it wrong.

Iv just bought a series 2 r31 silo with a rb25det conversion done by previous owner. Apart from the hell dodgy install job the cars sweettt.

I went to remove the monster tacho and rewrite the stock one when I ran into a problem. The monster tacho is getting its signal from the 120* degree crank angle sensor which works fine. Iv read you can get the tacho working by using pin 7 being the tacho signal wire from the ecu and a resistor wired correctly... However my ecu doesn't have a wire coming from pin 7.

Is there a way to use the crank angle sensor wire to power the stock tacho? as I am unsure of the frequency they both run at..

Thanks everyone.

[Jarrrrrrrrrrod]

All ready stuffed it haha. "Hey all this is my first post so ...LET.. me know if I'm doing it wrong."

[StevenCJR31]

Can i suggest you ask on r31 skyline club forum as there is heaps of knowledge on 25s into 31s

[jiffo]

Here you go.

I used this when I dropped an Rb20 into my old R31 farm jigger.

[Jarrrrrrrrrrod]

R31 club needs an paid email account to register and I'm not buying an email account just for a tacho haha.

And I haven't got a wire coming from pin 7 or the female conecter so that diagram won't help either, thanks for the effort though.

[StevenCJR31]

you have a 31, trust me. you will be asking more questions and the account doesnt cost that much