Тема: Модификация м42

И так нашел эту статейку при помощи форума www.m42club.com мне понравилось и решил выложить....Все что смог перевести напишу по русски...а кое что мне не понятно но надеюсь на помощь в грамотном переводе.....вот ссылка на статью  /go.php?l=http://bmwnut.blogspot.com/2006/04/1991-e30-bmw-318is-performance-mods.html    ну и вот собственно сама статья...

Изменение M42 318is Автор: Стюарт Мак-Генри
Это модификации для более резвое езды на м42 в городском режиме езды....

1. Чип-тюнинг - это очень простой и не дорогой способ модификации вашего автомобиля. Чип обычно стоит в пределах 200 долларов и он очень прост в установке.Чип на заводском двигателе м42 даст 145л.с.(из 136л.с.) а также увеличит крутящий момент а так же улучится повседневная управляемость. хотя реальный прирост мощьности приосходит на верхах.чип широко увеличивает диапазон мощности на M42, с 4600-6000 до 4500-6700. Так как на м42  издает характерный "вой" с 6700-7200 об / мин, что напоминает вам, что вы за рулем ей-богу BMW.

2.Маховик - Основная проблема в том что он весит на 28.5кг больше чем маховик с 325...и так решения этой проблемы такие
     1)Использование маховика и сцепления от 325
     2)Купить алюминевый маховик сцепления


остальное вроде сам понял на так чтобы грамотно перевести не получаеться ... переведите кому не сложно
Rear end gear - The 318iS is equipped with a 4.10 limited slip from the factory, but you can do better. The desired gears out there are the 4.27 and the 4.45. You will find the 4.27 in E30 318i convertible 5 speed’s and the 4.45 is in E36 318i automatics. The 4.45 is a wicked, wicked street gear but will stick your RPM way up there on the highway. The 4.27 is a good compromise of performance and everyday use. It should be known that to make a 4.45 work, you have to swap the gearset into your E30’s differential, or find an automatic 318ti, which has a 4.45 and also has trailing arm rear suspension! So the E36 318ti 4.45 bolts right onto an E30, though finding an automatic 318ti with LSD may be difficult.


Adjust the cam timing - You know how on the E30 M3 you have to buy a $300 kit with adjustable cam sprockets to tune your cam timing? Not on the 318iS! The M42 is equipped with tunable cam sprockets from the factory. So pull your Cosmoline covered valve cover off and with the proper tools you can tweak your intake and exhaust cams up to 6 degrees +/- to provide more top end horsepower or more low end torque. See, you don’t have to blow a grand on a set of Schrick cams to make your M42’s cams a little hotter. The best setup is to adjust the intake cam to 5 degrees (advanced) and leave the exhaust cam alone. I would recommend having a shop do this work.


Muffler - The 318iS is equipped with a very free flowing exhaust manifold and center section with 2.25" stainless piping. The bottleneck in the system is the muffler. Thee are a few options for this. The first is a cat-back system, which replaces the piping and boxes behind the catalytic converter. Supersprint makes an excellent cat-back system that runs about $400. You can also simply replace the muffler. There are a variety of mufflers on the market but there is one that is very inexpensive, sounds great (not too loud, but throaty), and fits an E30 very well - it is made by Walker-Dynamax and is called the "Super-Turbo" muffler. It is available from Summit Racing at the price of about $40. We have had great success with these mufflers, and even use them in 3" size on our E30/S50 cars.


Intake system - The 318iS stock airbox works well, but a cone filter setup works better, but only if you have a well-built heatshield! Get a large K&N setup with the AFM adapter and all. Go to Home Depot, buy some Reflectex and build a "cool-air" system by cutting and fitting a heatshield. It is worth it in the end. While you are working on the intake, get the secondary plate of your throttle-body bored out 3mm to 57mm. This will make a difference.


In conclusion, with a little time, a little cash, and a little elbow grease, you can tune your 318iS to really perform. I know of one 318is with a properly built cold air intake, Supersprint cat-back exhaust, and Jim Conforti chip puts 131hp to the wheels on a chassis dynomometer. 131hp at the wheels is between 150 and 160 crank hp. With a lightweight flywheel, more aggressive gearing, and a couple of hundred lbs less weight, your M42 318is will have engine performance equalling or best a stock M20 2.5 liter 325i or 325is, with a more modern engine design (no more solid lifter valves and valve adjustments or difficult to access oil filter) and better fuel economy. Next time, we will talk more about other, more intensive engine modifications to the M42 engine such as hot camshafts (cams), headwork such as porting and polishing, headers, aftermarket exhausts, stroker kits, aftermarket fuel injection setups like Megasquirt etc, as well as chassis and suspension tuning.