Trying to contact Bob Ashlock re Tach Adapt Options

[DaveO90s4]

Hi all, as the title says.

I’ve been very happy with his tach adapt box driving my OEM distributor from my 6 cyl corvair engine. I am now replacing my carbs with fuel injection and ‘wasted spark’ ignition. So I will now have twice as many ignition signals as at present. So I think I need to change the dip switches - or maybe the tach adapt won’t be able to step down 6 cyl x 2 firings per rev per plug = ‘effectively’ 12 cylinder driving OEM 4 cyl tach.

Any contact details for Bob, or solutions from those who have faced this issue, most appreciated.

Thanks

DaveO

[DaveO90s4]

Thanks everyone. Yes I was overthinking things. I have now found that the number of tach signal outputs is three per crank rev - same as my with-distributor non-wasted spark set up. So there should be no problems at all.

I am using SDS EFI 5F system.

Cheers all

Dave

[Mark Henry]

Thanks everyone. Yes I was overthinking things. I have now found that the number of tach signal outputs is three per crank rev - same as my with-distributor non-wasted spark set up. So there should be no problems at all.

I am using SDS EFI 5F system.

Cheers all

Dave

I think I was thinking of my SDS EM5-F six cylinder ECU which has the ECU tach wire installed as an option, for your system use the green wire that's located on the coil pack. If you have twin plug with coil packs X2 use the green wire from just one of the coil packs.

Feel free to drop me a line if you have questions about your EM5 install.