M42club.com - Home of the BMW E30/E36 318i/iS

DISCUSSION => Swaps, Turbos, Buildups => Topic started by: FreakRi on February 21, 2011, 06:16:34 PM

Title: UPgrade
Post by: FreakRi on February 21, 2011, 06:16:34 PM

What can I do to get more power, but without putting in a turbo or a supercharger. I've heard something about changing the crankshaft. Does anybody know something about that. What type of crankshaft should I use. I am open to any suggestions on how to improve my enging. :D

Title: UPgrade
Post by: bmwconnect on February 21, 2011, 06:34:20 PM

cams
Itbs
performance chip

Title: UPgrade
Post by: colin86325 on February 22, 2011, 12:25:18 PM

An M47 crankshaft will increase your displacement, but it's obviously no simple undertaking...

Title: UPgrade
Post by: DesktopDave on February 22, 2011, 04:32:12 PM

Lose some weight first instead of tweaking the motor.  I'll bet you could drop 150 pounds easily from the car.  I'd ditch the A/C and P/S systems if you have an e30, but the serpentine in the e36 makes that troublesome.  Maybe swap the parts over to the early M42 v-belt design.  Swap the engine driven fan for an electric one.  Drain the coolant and replace it with at least 33% coolant/66% distilled water & some Water Wetter.

Do a chip, do the COP swap, get some nice new iridium plugs and high-quality low viscosity synthetic lubricants in the motor, tranny & diff.  Upgrade the injectors to 19# Mustang units, do the hose delete mod, make sure you have no vac leaks.

Once you've done all the easy stuff, get a good compression or leakdown test to see what the motor is worth.  Get a wideband O2 sensor and see what the motor is really doing.  Tweak the cam timing, adjust the FPR and AFM for max performance.

Title: UPgrade
Post by: supadave on February 28, 2011, 02:48:03 PM

do this ^^.. you can also use a m44 crank and s52 pistons

Title: UPgrade
Post by: ziedas nr 1 on March 11, 2011, 12:25:01 PM

or m47 crank.