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Old 07-20-2021, 02:50 PM   #1
mschultz373
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Default b230FT/aw71 from 940 into 240

My 94 940T got wrecked pretty bad last month after I got rear-ended on the hwy, so i figured- why not swap the engine and trans into my 85 240?

so I'm wanting to plan out the swaps and have a few questions:

- will the LH2.4/EZK boxes work with the 240 fuse block? is there any special considerations wiring the computers up?
- is there any issue with using the stock 240 diff? I know the 940 locking diff would perform better, but my understanding is that, to use the 940 diff, I'd have to do cutting on the 240 rear axle to make it work?
- i assume the brake calipers/rotors will swap from 940? i don't know the specs but they appear larger and would provide more stopping power than the stock 240 brakes

if anyone's done this before, any other tips/insights/considerations would be greatly appreciated. thanks.
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Old 07-20-2021, 04:13 PM   #2
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Not enough information. What year is the 240? No, the brakes will not swap over. At least not the front brakes. The rear brakes would not be an upgrade as they use the same rotor and the caliper is almost the same, just missing the gas tank anti-crush stop.
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Old 07-20-2021, 05:19 PM   #3
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You can piece the 940 engine wiring together into the 85 240 but it's gonna be a pain.

This'll sound a bit nutty, but if you find your local junkyard and pull the engine wiring harness from 1989-later 240. If you're careful, you can have the entire harness out in 20 minutes... more if it's the 1st time. This harness has connections to all the lh2.4 sensors, etc. you'll be taking from the 940 in one complete wiring package all the way back to the fuel and ignition computers (which you'll also be taking from the 940. It's been a long time but the 240 lh harness terminates with the fuel pump relay and a nine-pin connector... If you locate the engine wiring diagram for a 240 you'll find the pinouts... obviously 12v constant/12v switched, ground and a few other things. This thread has more info. http://forums.turbobricks.com/showth...=230687&page=2

Your fuel/ignition system on the 85 240 is not compatible with any of the 940 stuff except maybe the throttle position switch and possibly oxygen sensor.
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Old 07-20-2021, 05:34 PM   #4
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85 240 w/ Lh2.2 and Chrysler ignition.

wanting to swap engine, trans and computers + harnesses from 94 940T, LH2.4 and EZK.
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Old 07-20-2021, 05:48 PM   #5
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Originally Posted by mschultz373 View Post
85 240 w/ Lh2.2 and Chrysler ignition.

wanting to swap engine, trans and computers + harnesses from 94 940T, LH2.4 and EZK.
I see it now. The easiest solution is to buy a 1989-1992 240 engine harness and swap that in. Then, either add the resistor pack from your 940 or run hi impedance injectors. Don't even attempt to use the 940 harness or you will be tearing your hair out trying to connect the fuel and ignition sides of the harness. Using the later LH 2.4 240 harness is nearly plug and play.
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Old 07-21-2021, 01:07 AM   #6
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Originally Posted by 2manyturbos View Post
I see it now. The easiest solution is to buy a 1989-1992 240 engine harness and swap that in. Then, either add the resistor pack from your 940 or run hi impedance injectors. Don't even attempt to use the 940 harness or you will be tearing your hair out trying to connect the fuel and ignition sides of the harness. Using the later LH 2.4 240 harness is nearly plug and play.
thanks for the heads up on that.

i have a set of blue giants I was planning to use in the 940 so that's even better - they should drop in with the 240 LH2.4 harness.
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Old 11-30-2021, 03:21 PM   #7
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coming back with one more question...

I plan to hoist the engine/trans out together. The two anchor points, as I understand, are the thermostat housing and the intake manifold between runners 3 and 4. Right?
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Old 11-30-2021, 03:25 PM   #8
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There should be a lift bracket at the back of the engine that attaches using the # 4 intake port bolts.
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Old 11-30-2021, 04:32 PM   #9
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You can always just use a rope or a section of cut seatbelt and tie it to an intake and an exhaust runner. Junkyard style.
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Old 11-30-2021, 08:29 PM   #10
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Remove everything from the engine fan forward. Doing this makes the job e z r.
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Old 01-10-2022, 02:20 AM   #11
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would a 1000lb stand be sufficient for the engine/trans?

Wondering what is best way to 'set' the engine/trans from the 940 while I pull the 240 engine/trans.
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Old 01-10-2022, 04:38 AM   #12
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A 1000lb stand is more than sufficient. I use this one: https://www.jegs.com/i/JEGS/555/8004...RoCjU4QAvD_BwE

I've always had an old tire for sitting engines on, but you could even sit it right on the ground as long as you're careful not to dent the oil pan.
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Old 01-10-2022, 10:00 AM   #13
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Is there enough space for the 940 dizzy to fit in the 240?
If not you would need to install the 240 dizzy in the 940 block. No idea if the 940 block has a useable auxilary shaft to drive that dizzy. If not you would need to swap that over as well. And because you might need the 940 dizzy to be removed (to make the 940 block fit the space in the 240 engine bay) you would also need to plug that hole on the back of the 940 head.
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Old 01-10-2022, 02:18 PM   #14
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Is there enough space for the 940 dizzy to fit in the 240?
If not you would need to install the 240 dizzy in the 940 block. No idea if the 940 block has a useable auxilary shaft to drive that dizzy. If not you would need to swap that over as well. And because you might need the 940 dizzy to be removed (to make the 940 block fit the space in the 240 engine bay) you would also need to plug that hole on the back of the 940 head.
No, there’s not. The head mounted dizzy will contact the firewall in a 240. Dizzy needs to be block mounted. I mean I guess you could beat the **** out of the firewall but don’t do that.

Would need an aux shaft and block mounted dizzy. Some 940’s got block mounted dizzys but those are mostly 94/95 model year from what I’ve seen.
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Old 01-10-2022, 04:36 PM   #15
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yikes, had not even thought of the 940 distributor.

Possible to remove the distributor and go to a wasted-spark set up on the engine?
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Old 01-10-2022, 09:28 PM   #16
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Quote:
Originally Posted by mschultz373 View Post
yikes, had not even thought of the 940 distributor.

Possible to remove the distributor and go to a wasted-spark set up on the engine?
Sure. Someone on here makes an adapter for lh2.4 to run a wasted apart set up.
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Old 01-11-2022, 12:16 PM   #17
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as in, with distributor removed, then the 940 engine will fit into 240?
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Old 01-11-2022, 03:13 PM   #18
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Why don't you just get a 89-91 240 harness, aux shaft and distributor and run the LH 2.4 system you already have from your 940?
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Old 01-11-2022, 03:27 PM   #19
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Great price and they don't pop up too often together.



https://forums.turbobricks.com/showthread.php?t=363312
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Old 01-11-2022, 04:03 PM   #20
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Quote:
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Great price and they don't pop up too often together.



https://forums.turbobricks.com/showthread.php?t=363312
I also have 240 lh 2.4 engine harness available.
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Old 01-12-2022, 12:19 AM   #21
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Quote:
Originally Posted by mschultz373 View Post
as in, with distributor removed, then the 940 engine will fit into 240?
You’ll need to move the distributor from the head to the block. It’s not hard. You might be able to extend the wiring for the dizzy in the 940 engine harness over to where the dizzy mounts in the block.

Probably easier to acquire a lh2.4 240 engine harness. You’ll need to make the plug for the amm longer so it reaches over to the passenger side so maybe it’s the same but different with the 240 harness versus the 940 harness.
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Old 01-12-2022, 03:17 AM   #22
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There is no wiring to a 240 or 940 LH 2.4 distributor.
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Old 01-12-2022, 04:20 AM   #23
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There is no wiring to a 240 or 940 LH 2.4 distributor.
**** you’re right. 240 engine harness probably better still.
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Old 01-12-2022, 02:48 PM   #24
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my plan at this point would be to go to a wasted spark setup for the ignition and thus remove the distributor from the cylinder head. that gets the 940 engine into the 240 bay.

then i did intend to get a 240 lh2.4 harness which does NOT have a resistor pack = plan to run 40lb blue giants that are high impedance.
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Old 01-12-2022, 03:34 PM   #25
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I started my weekend 940 turbo into 93 245 swap last summer. Finally limped it out of the garage about 3 weeks ago.

Due to wiring issues it turned into megasquirt and LS coils pretty quick.

A lot of your questions have answers that correlate to your skill level and what ultimately you want to do with the car.

You best bet is a lh2.4 distributor, ignitor, wiring, coil, distributor, ecu/EZK. But again, it's dependent on your skill and willingness to learn some 240 wiring diagrams and wiring capability.

Or just track down an 89+ 240
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