2.8 litre and 193BHP???

[baddie]

Did the 2.8 six really produce the same power as the old 2.5 or was BMW being coy for the then current german tax bracket? The 328i/528i had performance well beyond that of the 2.5 litre cars that came before, and I'm not sure it can just be explained by extra torque/longer gearing (The 528i's figures were almost suspicious!)

[BiggusLaddus]

The 2.8's are restricted to 193bhp by strangling them with undersized throttle bodies and the inlet manifold designed for the 2.0ltr.

The performance difference between these and the 2.5's is all about the torque. There is quite a lot more torque from the extra 300cc.

[vixpy1]

Its a damn quick car, I'm afraid i've never done a standard one, but I would suspect 200-205bhp was more like it having driven a few.

[swansea v6]

Get yourself to www.e36coupe.com, on there you will find out all about how and why BMW restricted the 323i and 328i engines. I believe it was because of the german tax laws being linked to power output. The 328i although having similar standard power output to the 325i has much better torque figures and when you change the inlet manifold to the non restricted one found on the 325i, plus a large bore throttle body, you instantly gain a very reliable 25-30bhp............and much improved engine.....

Edited by swansea v6 on Saturday 23 September 12:48

[foz01]

I pick up a 2000 528i sport on sat but i have been told due to the double vanos you cant do this mod, annoyingly

[Bodo]

It's most definitely not because a tax laws. In Germany, cars are taxed by engine displacement (per 100cm³. IIRC, 193PS has been a boundary for 3rd party insurances.

After introducing the 2.8l, BMW continued the 2.5l in a detuned state as 323i in order to not annoy people who bought a 325i just before. The 328i however, is MUCH torquier at low revs than the 192PS-325i!!

[swansea v6]

never heard about not being able to do it because of having double VANOS?????

[stub]

You can change the inlet manufold on both M52 and the TU variant.

My 2.8 has 285bhp at the moment

[foz01]

thats what the guy who provides the kits on e36.com e mailed me to say?!

285, that NA or forced induction

[stub]

foz01 said:

285, that NA or forced induction

6 p.s.i. boost from a Vortech centrifugal supercharger, for the last 2 years.

[swansea v6]

nice, bet that shifts!!!!!

[rlk500]

ooooh, that would liven my tourer up a bit......

[mustard]

mungo said:

foz01 said:

I pick up a 2000 528i sport on sat but i have been told due to the double vanos you cant do this mod, annoyingly

It doesn't have VANOS!!!

Not Soo

Early versions as fitted to E36 and early E39 didnt but later E46 & E39 versions did

www.unixnerd.demon.co.uk/enumber.html

[mustard]

Not that I believe (same engine used today be it in 3.0cc capacity) and on makin enquires on any issues on the 2.5 version, none was the reply from trusted source

[foz01]

so thats official then, I'm fooked when it comes to getting more grunt