If your car is an e30 than the swap is relatively easy. If your car is an e36 then its is more involved, needing a custom oil pan (due to the standard s14 pan hitting the e36s' cross member) and a custom driveshaft.
Yes, it is, the M42 is a DOHC 16-valve I4 piston engine first built for the BMW E30 318is and 318i 1991 year model. The engine block is based on the BMW M40, used on the 318i, but had distinctive features such as double overhead cams driven by a timing chain, hydraulic valve lifters, and an increased 10:1 compression ratio. The USA version of the 1991 318i only came with the M42 engine.
Look under the Mainfold and it should be a screw on sensor.....it also might be in a black box protected under the manifold its usually in plain sight but consealed by the box. Edit from someone else: I have a BMW 1995 318is with the same engine (if you're in the US). The engine is M42 and was used on '92-'95 318 BMWs. The IAT sensor is integrated into the volume air flow sensor, it is not a separate sensor as on some other cars.
I've seen them for about $170. Go to: wwiiimpressions.com
138 miles taking this route:Take A453, from Nottingham, to A42 (to M42) to BIRMINGHAM.Take A42 & M42 to M5 (S) to The SOUTH WEST.Take M5 down to Bristol.
130 miles taking this route:Take A512 ASHBY, from Loughborough, to A42 (to M42); once you are at A42, follow signs to A42 (to M42) to The SOUTH WEST to BIRMINGHAM.Take A42 & M42 to M5(S) to The SOUTH WEST.Take M5 down to BRISTOL.
33 miles following this route:Follow signs out of the airport, then follow signs to A42 & M42.Follow A42 & M42 to Birmingham.
You can get the 666a to the M42 nebula, but you'll have to walk from there.
Gas
105 miles taking this route:Take M1 (S) LONDON, from Wakefield, to A42 (to M42) to The SOUTH WEST to BIRMINGHAM at JUNCTION 23A.Take A42 & M42 to Birmingham.
By Car, up the M42/A42.
M42, m5 about an hour - twenty
because they where good.