My mom has a '97 Cavvie 2.2 that we blew the motor on... This is weird how it happened. Apparently the ignition module and crank sensor crapped out, retarded the timing so bad that the timing chain snapped and... Well, there aren't aluminum shavings in the oil pan, there are aluminum CHUNKS.
I might be getting a '94 Cavvie 2.2 for parts, which most are being split up between my '94 and my neighbor's '91... But does anybody know how hard it would be (or if it's even possible) to put the '94 motor into the '97? I assume there will be some minor mods to the wiring harness and I know the EGR systems are different...
Any guidance you guys can provide would be awesome, and appreciated! Thanks!
Ive heard its the same motor, maybe a couple minor differences...salvage whatever you can from her engine, transplant only the bare minimum to make it work...
iirc, 92-97 are the same, aside from mabey some brackets that will swap over. use the wiring from the 97, it will all plug in.
the motor is the same from 94 - 97 ... 92 and 93 do not have the roller cam... so yes it will be relatively easy to drop a 94 motor in to a 97, however you need to use the wireing harness and sensors from the 97, as 1997 is OBD-II and 94 is OBD-1 ..
Anyway, depending on how the timing chain snapped, since its all in the lower end, the 97's head should still be good... its worth taking it off and inspecting it, if anything will only need machine work
um i think that after 96 (obd 2) the block had a spot for the cam sensor i dont think that the older ones did
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um i think that after 96 (obd 2) the block had a spot for the cam sensor i dont think that the older ones did
This is correct. The cam engine specs are the same from 94 - 97, but the 96 and 97 engines were machined for a cam position sensor and the cam had additional material to trigger the sensor.
If you don't mind having a check engine light and you don't have to pass OBDII emissions tests, the 97 ecm will allow the engine to run perfectly without the cam sensor.
If you need to pass emissions then you should repair the timing chain in the 97 engine. Check rod / main bearings before doing any work. They should be in good shape since the engine likely didn't have time to circulate large amounts of junk through the oiling system. If all look ok then remove all junk from the pan, replace the chain, gears, and tensioner and you should be good to go.
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