2.7i Twin Turbo Feeler

[wallyg]

So I have a Twin Turbo Fabricated for an m20, all I need is an exhaust for it. Its two K03 Turbo's with an S4 Intercooler and a Split Second Fuel Controller. I was wondering if I should do an 885 head swap, my power goal is 350-400 Hp. I see that a single turbo is less head ache and more power, but I want to use what I have.

I have done research and the parts I will need for the head swap are
885 Head (ported)
I Intake Manifold
60# Deka Injectors
Mls Head Gasket
ARP Head Studs
IE 272 cam (maybe 288/284 Schrick)
IE HD Rockers
I Throttle Body
325i Cps
325i Dual Valve Springs
I Instrument Cluster
I Wiring Harness
Do I need 325i Thermostat housing and new sensors?

I have changed the Head gasket before, but I am new to FI so i am still figuring out how a turbo system works.

Is there anything I am leaving out?

The upgrades are going on my 1987 325e

edit: would it be easier to just swap in a 325i Motor and be done with it?

[Grizzly]

awesome! Can't say I know much about the head swap but I'm doing the same thing turbo wise! Do you have any pictures of your setup? Here's a link to mine : http://www.maxbimmer.com/forums/showthread.php?t=161342

After my reaserch I would say you just need to rebuild the (swapped)head and the gasket with the studs would be enough, spend your money on a stand alone ecu rather then the cam

[anabolice30]

IMO if you're going twinsies, swapping in the b25 is not worth the heartache for +20-30 hp. Plus the b27 is supposed to hold more boost.

[TheTacoMan]

Plus the b27 is supposed to hold more boost.

There are quite a few misconceptions about the eta motor with an i swap being better for boost due to lower compression which is true in some aspects and not in others.
Having lower compression makes tuning a little bit easier in the sense that the lower compression motor will not bet as affected by a bad batch of 91 oct.

As far as the 2.7i goes under boost its very similar in power to a 2.5i.
http://www.turbobygarrett.com/turbob...tio_with_boost