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changing 1983-84 L2.0 to L2.2 (85-8?) 200

posted by  transit wind on  Tue Mar 31 06:54 CST 2009
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last visit: Fri Aug 15 22:40 CST 2014
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I was searching the archives on turbobricks and found something interesting. But I've got two conflicting verifications of what it takes to change an 83-84 L2.0 over to a 85-87 (maybe up to 89?) L2.2. I'll post the two posts I found, one short about just needing to change distributors/repin amm connection and the other claiming more. Which one is correct. I've got an 85 distributor that is causing problems in my 83, thinking maybe of just going for the whole swap and making it a L2.2.

#1
"It's a very stout motor, its a B21 w/ larger bore. Forged crank. LH2.0 is just as reliable as 2.2 the only difference between the two is the distributor, and the AMM. If you have a LH2.0 AMM failure, it is as easy to convert to LH2.2 all you need is the LH2.2 ECU, and repin the AMM to LH2.2. All sensors for LH2.0 are otherwise the same as LH2.2.

I converted my B23F LH2.0 to LH2.2 doing just the above, runs great and easy parts availability with LH2.2."

#2

"LH2.2 is much more rational in comparison. AMMs are much more stable, wiring harness clips are much less of a PITA, excepting the odd 1 real early 85-86 car, I've never replaced an ECU on any LH2.2 car ever, and converting an LH2.0 car to LH2.2 is pretty straight forward if it is your personal car. I wouldn't do it without decent compensation on someone else's car, but you just need an LH2.2 engine harness (with fuel pump relay), computer and to switch the in-cabin plug with the 3 wires for the fuel pump, ignition switched power to the fuel pump relay, and wire for the A/C fast idle to mate up to the LH2.2 stuff. The silver lining is also that LH2.2 turbo ECUs are a heck of a lot more common than the LH2.0 compatible one (only comes in the '84 760T)."

The first one grabbed my attention because of the apparent ease but the second posting seems a bit more difficult. Anyone ever done the conversion? At this point I'm chasing after an 83 distributor with the bad round connector and the wire lead that seems to get shorts too. I'd rather just go L2.2 if its not too difficult. Thanks






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