M54. Let the foolishness begin.

[himizoli]

Finally our M54b30 in E21 started up. :p



http://www.youtube.com/watch?v=-2wwOPbziWg

[hoveringuy]

Hmm interesting information about the crank sensor!

Thanks for sharing.

-Cam

I thought it was important because it's a plug-n-play option for M52/S52 OBD1 conversions.

[Spaz]

Hmm interesting information about the crank sensor!

Thanks for sharing.

-Cam

[Mde36]

Just read this entire thread an it is spectacular. I laughed, I cried, I had to change my underwear. The level of dedication ingenuity and fabrication is amazing I've been inspired to do something on my car.

[matt]

Nice, thats a great piece of info to have. Thanks.

[hoveringuy]

Frank Ramos alerted me to the fact that the M44 crank sensor is a replacement for the M54 sensor, except that it is VR instead of Hall.

This means a Hall conversion circuit is no longer necessary, I can get a native VR signal!

The sensor is plug compatible with an M50 harness and fits the block perfectly. I'm guessing this is also the case with the M52 and S52.

I've replaced my Hall sensor with the M44 VR one and the car runs. Only issue I am having so far is that the VR sensor generates very good voltage, but only tiny amounts of current. That little bit of current needs to satisfy both the 413 ECU and my VANOS ECU.

The part number on the sensor is 12141247622

[Spaz]

I second...err third the notion!

here here.

[dude8383]

And start selling kits! :p

I second...err third the notion!

[Wh33lhop]

Steve cut the crap start on the s54 already.....:hitler:

And start selling kits! :p

[gregslow318i]

Steve cut the crap start on the s54 already.....:hitler:

[hoveringuy]

The bolt pattern is different between the M50 and M54, but I'm sure that would be easy to adjust. Michael hasn't said anything about producing these in quantity, I'm showing what can be done and with interest anything is possible.

[Danny]

Is it just bolt on to the s50, steve?

[Elysian]

How much did that run you?

[hoveringuy]

throttle body

So I've been working on the electronic throttle to get a permanent fix to my M50 throttle body. The electronic stuff was working great when Michael Hoy in Denmark mentioned that he could make a throttle body to fit the M54 that would use M50 components.

His work is superlative!

My inital reaction was the that the larger bore made the engine much more responsive, but I think that was due to a quicker increase in airflow at a given throttle position. After a day of driving I've adjusted to how the throttle responds more quickly, but I'm convinced that the motor pulls harder.

My theory is that BMW probably tried a larger TB on the S50 but decided that 4 or 5 extra hp wasn't worth the trouble of manufacturing a new unit so they stuck with their existing parts bin. They went larger on all subsequent 3.0 litre engines including the M54. I think all S50s should have one!

[Wh33lhop]

You are my goddamn hero. Got any sound clips with the euro headers?