Success: G13AB with injection from a 3.9l ford
Posted: Tue Aug 31, 2010 5:28 pm
Over the past six months I've finally ditched the horrible carburettor on my samurai and put a throttle body injection system on it. Was actually a fairly easy and cheap modification.
I'm using the throttle body/injectors off an EA flacon 3.9 (they call it center point injection, CPI). It must have been horribly restrictive on the falcon, as it's not ridiculously sized for the 1300! I've bolted it up to a standard (other than some fairly significant die grinding) inlet manifold with an adapter plate similar to that used for a webber carb.
To control it all, I made up a megasquirt 2 computer. Using GM inlet and coolant temperature sensors (purchased with the megasquirt kit), original TPS from the falcon throttle body, and a standard 3-wire O2 sensor. The megasquirt ECU comes with a MAP sensor.
Becasue the falcon injectors are fairly large for the 1300 (although no larger per cc than a lot of higher power turbo engines end up running) I've ended up running the hi-res code to get a better idle. That also gave me extra features like rev limiter (very handy) etc.
I've just been tuning on the trail. It's a farly slow process, as it's hard to work on a laptop when you're boucing around in a zuk -- it gets transported on a trailer and is not road legal. I now have it running pretty good, with only a minor flat spot in the low revs (who needs them anyway!) after 3 afternoons and a weekend trip.
In the last trip to haast, it used less than 20 litres for a solid two days driving -- very similar to the diesel trucks on the trip, and far less than the 90l used by a 350 chev in a 40..... Very happy with this, as it also seems to have more power and is MUCH more responsive.
All in all a great success, so glad to be rid of that damn carb!
I'm using the throttle body/injectors off an EA flacon 3.9 (they call it center point injection, CPI). It must have been horribly restrictive on the falcon, as it's not ridiculously sized for the 1300! I've bolted it up to a standard (other than some fairly significant die grinding) inlet manifold with an adapter plate similar to that used for a webber carb.
To control it all, I made up a megasquirt 2 computer. Using GM inlet and coolant temperature sensors (purchased with the megasquirt kit), original TPS from the falcon throttle body, and a standard 3-wire O2 sensor. The megasquirt ECU comes with a MAP sensor.
Becasue the falcon injectors are fairly large for the 1300 (although no larger per cc than a lot of higher power turbo engines end up running) I've ended up running the hi-res code to get a better idle. That also gave me extra features like rev limiter (very handy) etc.
I've just been tuning on the trail. It's a farly slow process, as it's hard to work on a laptop when you're boucing around in a zuk -- it gets transported on a trailer and is not road legal. I now have it running pretty good, with only a minor flat spot in the low revs (who needs them anyway!) after 3 afternoons and a weekend trip.
In the last trip to haast, it used less than 20 litres for a solid two days driving -- very similar to the diesel trucks on the trip, and far less than the 90l used by a 350 chev in a 40..... Very happy with this, as it also seems to have more power and is MUCH more responsive.
All in all a great success, so glad to be rid of that damn carb!
i wish mine was that cheap to run 