I know somewhere there is a writeup on in "e" to "i" swap, but I lost the link. Anyone have it? I am trying to get an idea of what needs to be replaced to make this work.
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M20B25 to replace '87 M20B27
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You'll need the new wiring harness.
The flywheel - you can use the one off the B27 - but it'll be dual-mass. SInce you're in there, you might as well convert to single mass and put in a new clutch and everything.
I'm not sure if the reference sensors are in different spots, but your tranny should mate right up - if there's a hole in the tranny for a sensor, just plug it up. The sensor on the new 89 is on the front of the engine on the crankshaft balancer.- Sean Hayes
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Originally posted by SeanYou'll need the new wiring harness.
The flywheel - you can use the one off the B27 - but it'll be dual-mass. SInce you're in there, you might as well convert to single mass and put in a new clutch and everything.
I'm not sure if the reference sensors are in different spots, but your tranny should mate right up - if there's a hole in the tranny for a sensor, just plug it up. The sensor on the new 89 is on the front of the engine on the crankshaft balancer.Current Cars2014 M235i2009 R56 Cooper S1998 M31997 M3
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No, the auto doesn't have a flywheel, it's an auto... :ohsnap: (it has somethin else, but i'm having a brain fart, so I can't remember what's it called specifically)
lol
Get a single mass I flywheel off ebay, take it to a shop, have it lightened, and get a new OEM Sach's clutch kit. Wear the clutch in for like 500 miles. I did it for mine, and it grabs SOO well. hehe
If you're reference sensor is up front, then no worries for your 5spd tranny - it'll work perfect.
Robert's not kiddin about the dual-mass gayfer flywheel. It's LAME. 27 lbs of GAYNESS lol What you want is 12 lbs of GOODNESS!
Lightweight flywheels are HEAVAN! :)- Sean Hayes
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Originally posted by SeanNo, the auto doesn't have a flywheel, it's an auto... :ohsnap: (it has somethin else, but i'm having a brain fart, so I can't remember)
lol
:)
I can get an I flywheel pretty cheap locally. Thanks for the advice.Current Cars2014 M235i2009 R56 Cooper S1998 M31997 M3
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