http://www.bmw318is.jp/etc/engine.htm
1990年 M42型 M40型エンジンをDOHC化。E30 318isに搭載。140ps/6000rpm
http://www.europeancarweb.com/tech/techletters/0000ec_techletters02f/
The E30 318is, produced in 1990 and 1991 as a 1991 model-year car, is a great deal more like the E30 M3 than the 325is. At a svelt 2,602 lb, it is the lightest "modern" BMW by a substantial margin. And while it's M42 1.8-liter dohc engine is clearly underpowered with a scant 138 hp at 6000 rpm and 129 lb-ft torque at 4500 rpm, it will rev up like prom date on Stoli, easily provide trouble-free six-digit mileage, and get over 30 mpg in the process. The Getrag 240 five-speed overdrive gearbox and small-case 4.10 differential are no-brainers given the occasional synthetic oil change. Even driveshaft parts last longer on the 318is, due to the relatively low torque.
http://www.esatclear.ie/~bpurcell/318ismods.html
http://www.bimmerdoc.com/engines.htm