Ants delco twin cam gemini

[Yortt]

Can I ask what throttle position sensor you used? I intend using this induction system on a G161 motor.

[antus]

Its a generic aftermarket universal tps like this one https://www.ebay.com.au/itm/311900425894

[Yortt]

Thanks

[antus]

Things are happening, its getting exciting.

[Gareth]

Hell yeah!!!

[Charlescrown]

Gunna take a nice bit of fabrication to get the exhaust out thru that small hole. They were a great engine std but with boost it'll be a little rocket.

[vlad01]

Maybe Ant can use my method of clearance pipes to make a few flat spots or change the shape to more oval which saves bring out any welders or grinders.

[antus]

The stock one had 2 pipes through that gap, and the exhaust shop think they take a 3" v-band off the back of the turbo in to two pipes, get it through there, then merge it under the car without problem. I have supplied an aeroflow 5 bolt to v-band adapter to bolt on the back. I should get it back Wednesday if all goes well and then have some more updates. I have a lot of hose fittings and hopefully I can get oil and water all piped up.

Thinking about the intake pipes now.

You'll see there are LS1 coils now, they're using the basic VL400 module that has no dwell control but just changes the coil output from the delco module back to a logic level to drive those, then runs them as 2 pairs for effectively wasted spark but 1 coil cylinder, rather than coil in the middle of two like the delco coil packs.

There are also some custom 440cc injectors. I am not sure how they are going to go. I made up a basic injector tester with an esp32 chip and mosfet and bought 8. I found 6 were very close in flow, 1 was a few percent out and one was a fair way out. So I grabbed 4 of the close ones and am counting the other two close ones as spares, one that could be used at a pinch, and I think I already threw the worse one in the bin.

There is also a 2 bar map, and Ive put a base tune in the boost areas. It was drivable with the map, ignition and injector upgrades still as N/A, but I'll do some more tuneing when I get it back with the turbo on and it's all together, as I think it will have changed enough again.

[antus]

It was not possible to get real flow data with this setup as it does not have electrical properties that match with the delco's injector driver, as well as is missing of the analog circuitry that is required to get a good signal in to the injectors, but it was enough to compare them to each other, then do the rest on the car.

Also the part number of the lower o-rings that go on the tips turned out to be IJO-030 which are not the ones pictured, they were too big for the car.

[delcowizzid]

Boost fixes everything can't wait to see this going