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Old 11-27-2017, 02:14 PM   #1
VolvoPrince
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Default 1984 B23F to B21FT (KJet to LH2.2)

So I'm about to transplant an 83 B21FT into my 84 245 with a B23F. I have everything I need I think (the guy who sold me the engine gave me literally everything from his car plus some). I want to convert the KJet system to LH2.2, which is in my car right now. What else do I need to do this?
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Old 11-27-2017, 08:37 PM   #2
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Here's a start - look it over and see if it makes sense and if you have questions:
http://forums.turbobricks.com/showthread.php?t=286161
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Old 11-28-2017, 01:26 AM   #3
VolvoPrince
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I took a look, what is the EZK wiring for? I was going to take my 160 head off my B23 and fit it to my B21FT I just bought since the 398 head on it has the KJet Ports, plus I would need to rebuild the 398 head since it hasn't been and my 160 has. I plan on taking my distributor and other parts like the intake manifold with rail and injectors, idle control valve, mass airflow, and a few other parts on the new motor. Won't that work?
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Old 11-28-2017, 01:28 AM   #4
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Sorry, I actually spoke wrong. My car currently has LH 2.1 on it. Will that still work?
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Old 11-28-2017, 01:42 AM   #5
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Sure,,,But why? Didya pop the B23?
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Old 11-28-2017, 01:59 AM   #6
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She has around 500k miles and needs a lower end rebuild...
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Old 11-28-2017, 02:03 AM   #7
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Quote:
Originally Posted by VolvoPrince View Post
She has around 500k miles and needs a lower end rebuild...
OH! That's a lot..
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Old 11-28-2017, 07:32 AM   #8
DET17
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Quote:
Originally Posted by VolvoPrince View Post
..... I want to convert the KJet system to LH2.2, which is in my car right now. What else do I need to do this?
My son went down this road to perdition..... fought various LH2.2 parts, ECUs, and the performance was random & poor. Frustrated with it, he ripped out the LH2.2, bought & built a MS1 from Megasquirt, built a wiring harness on a Saturday and had it running Saturday night.

I've heard similar laments from folks attempting to use LH2.2. For my money, MS and TunerStudio is a slam dunk.... and you'll learn a couple things while your at it
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Old 11-28-2017, 07:47 AM   #9
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I made 209hp and 233ft.lbs to the wheels with lh2.2 wEZK and brown top injectors. The EZK is a computer controlled ignition linked to the fuel computer that retards the timing when knock it detected, this feature is not available with the regular breakerless ignition
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Old 11-29-2017, 10:33 PM   #10
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Quote:
Originally Posted by VolvoPrince View Post
Sorry, I actually spoke wrong. My car currently has LH 2.1 on it. Will that still work?
Your car currently has 2.0. 2.1 was offered in the '84 760 Turbo that had LH with EZK ignition.
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