getting ma61 6cyl digital tacho to work for a v8?

[desty]

I'm not ready to give up on the factory tacho just yet. Is there a product for this sort of thing? I'm not a fan of having extra gauges all over the place.

Thanks.

[thechuckster]

This is with a 1UZ? If you are using the factory twin igniter & dizzi setup, just take the tacho output from one igniter and then open up the MAZ61 dash (as there's a wire-jumper to change the tacho from 6 to 4 cyl) and change it to 4cyl. Output from 1 igniter will then be the right rev counts?

[mullett]

Yup, exactly what he said. That's how mine's running, works beautifully

Or, get an analogue celica dash...4cyl input!

-RM

[desty]

Thanks guys. Not sure but I think it's running the 4cyl adaptronic in wasted spark mode? So not really sure what to use as an output. Any hints for locating this jumper?

[RA35GT]

Does your tacho read anything now? If so, I assume it reads around 50% too low?
In which case all you need to do is this. http://www.toymods.org.au/forums/sho...=1#post1299342

If no tacho at all:
Going by photos and the for sale thread, it would seem to have an microtech x4 yet retains the two factory coils? in which case it would still have a dizzy and not be wasted spark. Seeing as it doesnt have the factory igniters, you will need to source a tacho output from the adaptronic itself, if you look into the aux output options aux out 1-3 can be set as a 6 cyl output, you will need a relay coil pulled up to 12V to generate the back emf that drives the tacho. (diagram here http://www.toymods.org.au/forums/sho...=1#post1251248) (Dont need to mod the dash with this option)

Rudi

[wilbo666]

If you have an adaptronic then you should be able to set the tacho output to output so that you don't need to change anything! You'll need to set up a 'booster' for the adaptronic output however.

Cheers
Wilbo

[desty]

If you have an adaptronic then you should be able to set the tacho output to output so that you don't need to change anything! You'll need to set up a 'booster' for the adaptronic output however.

Cheers
Wilbo

Does your tacho read anything now? If so, I assume it reads around 50% too low?
In which case all you need to do is this. http://www.toymods.org.au/forums/sho...=1#post1299342

If no tacho at all:
Going by photos and the for sale thread, it would seem to have an microtech x4 yet retains the two factory coils? in which case it would still have a dizzy and not be wasted spark. Seeing as it doesnt have the factory igniters, you will need to source a tacho output from the adaptronic itself, if you look into the aux output options aux out 1-3 can be set as a 6 cyl output, you will need a relay coil pulled up to 12V to generate the back emf that drives the tacho. (diagram here http://www.toymods.org.au/forums/sho...=1#post1251248) (Dont need to mod the dash with this option)

Rudi

Sounds like I'm going to need a laptop? Tacho reads nothing atm. Relays and boosters and just wires in general aren't my thing so might have to hit up a sparky.

[RA35GT]

Yeah laptop required to change settings in adaptronic. (well you could pull the computer out and power it up on the bench and use a desktop)

It's probably an hour or so worth of work in total mate (and a few bucks in parts, which you probably already have so realistically nothing).
(Biggest unknown would be how long it takes to find tacho wire to dash heh)

[mullett]

Tacho wire to dash = run new wire

Desty: buy mine instead...the tacho works! Haha

[desty]

Nah. In hindsight 1uz into m/ga61 is a really bad conversion IMO. At least yours wasn't done into a fucking targa top by a bunch of monkeys with a toolbox containing nothing but hammers.

[mullett]

Haha, how so a bad conversion?

-RM

[desty]

I can't put a finger on it. 10 years ago it was my dream conversion. Now that I've got one I wish they had put the engine into something lighter and less conspicuous. Non-turbo it doesn't have the go to match the styling and if one goes turbo you would have been better off with a different engine in the first place.