A lingering Q

[itlksez]

I picked up a B230FT on marketplace to swap in place of the B230F in the Willys jeep in my avatar. The F has been wonderful and trouble-free for around 25k miles, but I really need a few more hp to make it a stress-free commuter.

I believe I have most everything sorted and accounted for, but I haven’t been able to find an answer to one lingering question: Correct me if I’m wrong, but everything I’m reading says the B230F used a MAF sensor, and the B230FT used a MAP sensor. Is that correct?

If so, will the FT engine and ECU operate with a MAF sensor?

For reference, the engine and wiring is from an ‘87 740. Thanks!

 

[Crustacean Wagon]

No map sensor, it uses the same maf as the NA setup. Only change to be made is relocating the maf pre turbo

 

[itlksez]

Thank you!

 

[itlksez]

Oh yeah, there is one other question…
I get that the ECU has to be switched over to manage the different ignition requirements, but does the fuel computer need switched also? Even if the injectors are switched over the the 850 orange-tops? I can’t find a definitive answer on this.

 

[240 240]

Oh yeah, there is one other question…
I get that the ECU has to be switched over to manage the different ignition requirements, but does the fuel computer need switched also? Even if the injectors are switched over the the 850 orange-tops? I can’t find a definitive answer on this.

use matching computers from the engine you pull or a matching turbo set put a wanted ad in here.
ezk ignition and main

are you running 2.2lh or 2.4lh? kjet?

 

[itlksez]

use matching computers from the engine you pull or a matching turbo set put a wanted ad in here.
ezk ignition and main

are you running 2.2lh or 2.4lh? kjet?

Thanks for the reply.

My current module (and harness) is 0 280 000 544, which according to this chart is 87-92 LH 2.2.

 

[bobxyz]

The ECU is always matched to the injector flow rate, which means you need a Turbo ECU and either a) factory low impedance ~300cc/min injectors with a resistor pack, or b) other ~300cc/min high impedance injectors (no resistor pack needed). The standard NA MAF usually has enough range to work with higher flow turbo setups.

You need an ignition system that retards timing under boost. The LH2.2 240s never had a turbo option, and used the Chrysler NA ignition box. The LH2.2 740s used a Turbo EZ117K ignition box. So you want a Turbo 740 EZK box to go with a Turbo LH2.2 ECU. This needs a special adapter harness - either made from part of a 740 harness, or a no-longer-available adapter harness from DaveBarton/240turbo.com

If your current or donor engine has a LH2.4 flywheel, with the 60-2 (sixty minus two) tooth pattern, you could use a standard harness from a LH2.4 NA 240 with LH2.4 Turbo injectors/Turbo ECU/Turbo EZK.

 

[itlksez]

I feel like I’m in over my head. I can fabricate with the best of them, but electronics are magic to me.

The LH2.2 740s used a Turbo EZ117K ignition box. So you want a Turbo 740 EZK box to go with a Turbo LH2.2 ECU. This needs a special adapter harness - either made from part of a 740 harness, or a no-longer-available adapter harness from DaveBarton/240turbo.com

So it’s not as simple as just finding the right boxes and plugging them into my N/A 740 harness?

 

[bobxyz]

Oh, sorry, I missed that you already had a 740 harness. You'll then need a Turbo LH2.2 ECU (0 280 000 518? or 0 280 000 541 or 0 280 000 591), a Turbo EZ117K ignition box (0 261 201 012), ~300cc/min injectors (either factory low-impedance with a resistor pack, or replacement high-impedance without the resistor pack), and I think a 3.0bar fuel pressure regulator.

 

[itlksez]

Oh, sorry, I missed that you already had a 740 harness. You'll then need a Turbo LH2.2 ECU (0 280 000 518? or 0 280 000 541 or 0 280 000 591), a Turbo EZ117K ignition box (0 261 201 012), ~300cc/min injectors (either factory low-impedance with a resistor pack, or replacement high-impedance without the resistor pack), and I think a 3.0bar fuel pressure regulator.

Awesome. Thank you so much.
I know these questions can get redundant for you guys after a while, but it’s beyond appreciated when we noobs seem to search endlessly for just the right info and it constantly feels just out of reach.
Thanks again for the precise info.