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Re: Spg rebuild Posted by RS [Email]  (#15)  [Profile/Gallery]
(more from RS) on Tue, 25 Mar 2003 09:20:27
In Reply to: Spg rebuild, Chris Walker, Mon, 24 Mar 2003 16:12:07 Members do not see ads below this line. - Help Keep This Site Online - Signup |
There shouldn't be any problem with dropping the engine in. You can keep the current 2.4.2 LH ECU and harness as long as you switch over the Throttle Position Sensor. IIRC, both the '87 T and '91 S use 3-wire AIC valves. The fuel mapping in the '91 might be a little lean on the high output end of the map, though. I've been using a '90 900S ECU in my '89 SPG, so the fuel mapping isn't so far off that the car is undrivable.
From looking at the LH wiring diagrams, I believe that the AMM pinouts on the AMM are the same for the LH 2.4 and 2.4.2 ECUs, so it should be plug-n-play for the AMMs.
Swapping an EZK box and an APC box is much more involved wiringwise. Assuming that you want to use APC for engine safety, one thing that someone suggested a few years ago in a posting here was to retain the EZK system and install an APC in to control the APC solenoid. You'd have to craft a wiring harness to get power and signals into and out of the APC box, obtain a pressure transducer, and piggyback a separate knock sensor for the APC onto the current one.
The trick is going to be getting the engine speed pulse from the ignition module both to the EZK box and to the APC. Offhand, I don't know if there's an easy, cheap solution to that - if you can series or parallel the signal or whether you have to go with a solid-state solution, I couldn't say.
It's a neat idea.
From a mechanical standpoint, the only other thing you'd want is the same primary gearing ratio as a 900T in your transmission.
posted by 66.21.16...
, Tue, 25 Mar 2003 09:20:27 <-- Viewing This Message
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