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Old 02-13-2018, 09:47 AM   #1
SolderedCam
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Default B230ft swap lh2.4 wiring questions

I've been looking up info on swapping an na Lh2.4 740 to an lh2.4 b230ft that I'm getting from an 940. I've looked up info regarding the swap but most if not all only have info on the swap for early model 240's. I can't find anything related to the swap for later cars except I know that I'll need to extend the wiring for the AMM. Can anyone chime in and give a little more info on what's needs to be done? Like swapping the body harness or swapping the engine harness/splicing into it? Or do I just need to swap the Computers and extend the AMM to get it running. Any help/info is greatly appreciated!
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Old 02-13-2018, 10:05 AM   #2
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This is an NA 940 LH2.4 wiring i converted to a 240 turbo. The AMM wire iirc was the one with the winding in it.
With some hose cutting, depinning a few connectors, I'm fairly sure you can manage to put the AMM any place you want in the bay.
Other important thing is to remove/depin/cut the WOT wire, from the throttle switch connector or at the LH connector, pin nr 3.
http://ipdown.net/jetronic.info/tiki...Id=465&display
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Old 02-13-2018, 10:23 AM   #3
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Get the turbo ecu & ezk. Extend amm wiring. Everything else is pretty straight forward.
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Old 02-13-2018, 12:43 PM   #4
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Other important thing is to remove/depin/cut the WOT wire, from the throttle switch connector or at the LH connector, pin nr 3.
Why?
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Old 02-13-2018, 02:06 PM   #5
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Why?
Turbos do not use it as far as i know. Maybe the turbo ecus doesnt even check that pin though, but its easy to depin that single wire.
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Old 02-13-2018, 02:25 PM   #6
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Turbos do not use it as far as i know. Maybe the turbo ecus doesnt even check that pin though, but its easy to depin that single wire.
Interesting, thank you for the information. I will have to look more into this. Will report back with what I am able to find.
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Old 02-13-2018, 03:39 PM   #7
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Don't forget you have to add the resistor pack if your using stock turbo injectors.
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Old 02-13-2018, 03:39 PM   #8
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Just follow this guide....
http://forums.turbobricks.com/showthread.php?t=230687
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Old 02-13-2018, 04:54 PM   #9
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Don't forget you have to add the resistor pack if your using stock turbo injectors.
Yeah I picked up some Red S70 Injectors to eliminate the need to run a resistor pack
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Old 02-13-2018, 04:56 PM   #10
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Quote:
Originally Posted by petiww View Post


This is an NA 940 LH2.4 wiring i converted to a 240 turbo. The AMM wire iirc was the one with the winding in it.
With some hose cutting, depinning a few connectors, I'm fairly sure you can manage to put the AMM any place you want in the bay.
Other important thing is to remove/depin/cut the WOT wire, from the throttle switch connector or at the LH connector, pin nr 3.
http://ipdown.net/jetronic.info/tiki...Id=465&display
Thanks for the Heads up I'll be sure to do so!
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Old 02-13-2018, 10:32 PM   #11
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Thanks I'll be sure to review it
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Old 02-15-2018, 01:44 PM   #12
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What I'd try and do is leave the motor harness on the turbo 940 motor that you are putting in the na 740 and plug it into that plug on the firewall. That would be easiest.

That link is for using a NA 240 harness. I did that in my 89 lh2.2 740 turbo car, but since your 740 is already lh2.4 you don't have to take harnesses all apart or use a 240 na 2.4 harness or any of that bs. Should be fairly easy for you to do it.
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Old 02-16-2018, 04:12 PM   #13
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Quote:
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Don't forget you have to add the resistor pack if your using stock turbo injectors.
Spelling "you"re" incorrectly makes you seem uneducated.

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Old 02-16-2018, 04:31 PM   #14
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wut?

Here's the problem that guide thread by dat wanna be isn't what he needs for wut he's doing, but okay yeah you all is smarty morer dan me so do wut you want, I don't car no more.

Last edited by sbabbs; 02-16-2018 at 04:37 PM..
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Old 02-16-2018, 10:57 PM   #15
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wut?

Here's the problem that guide thread by dat wanna be isn't what he needs for wut he's doing, but okay yeah you all is smarty morer dan me so do wut you want, I don't car no more.
Bravo!
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Old 02-17-2018, 01:05 AM   #16
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Other important thing is to remove/depin/cut the WOT wire, from the throttle switch connector or at the LH connector, pin nr 3.
Nah no need to do that.

OP, install turbo ecu and ezk and turbo parts, extend AMM wiring and do a durnout.
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Old 02-17-2018, 08:16 PM   #17
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Washer bottle relocate so turbo airbox fits.
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