BMW M52B2.8 Single VANOS (Stock - No Turbo)

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milesinfront
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BMW M52B2.8 Single VANOS (Stock - No Turbo)

Postby milesinfront » Tue Jun 24, 2008 3:22 pm

This motor is in my brother's E30 (325is).

First kicked it over 2 nights ago. Not a lot of time for tuning yet and car is not drivable either. Still it fires up and idles perfectly. MS2 Extra Driving stock COP's via 6 x ISL9V5036P3 (VB921 equiv) on 2 Glen's Garage idle boards in wasted spark. One board has 4 drivers, the other has 2 drivers and idle control. Can supply details on request, will publish 'polished' tables when ready...

Some vital info:-

-Crank Sensor is front mounted HALL sensor. (5v is working well) ***UPDATE*** - Having minor random sync losses when cold. Switched HALL supply to 12V made no difference. I am 75% sure these sensors run 12V on the factory ECU.
-Cam sensor is unknown, and is labeled a 'proximity' sensor in my Bentley Manual. (???)
-ReqFuel for stock injectors is 13.5ms (suspect this value is off as 100kpa VE cells are up to 130...)
-Tooth No.1 is 330 dbtdc
-Standard Tach circuit (12v, 1n001 & 2 x 1k) seems to work the E30 dash.
-VANOS solenoid is switched on @ ~1600rpm and off @ ~5000rpm. (Yes, switch off at 5000rpm!)
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Last edited by milesinfront on Tue Aug 26, 2008 9:51 pm, edited 1 time in total.
-1988 325is BMW M52B28 - > MS2 Extra n Spark (60-2 Wheel, Wasted COP) Early Days of Tuning
-2004 Opel Corsa C / Holden Barina Z18XE - > MS1 Extra n Spark (60-2 Wheel)
-1976 Triumph Dolomite Sprint Race Car -> MS1 n 'EDIS'd
-1984 C1 2.3 Alpina -> MS2 Extra n Spark (60-2 Wheel)

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milesinfront
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Re: BMW M52B2.8 Single VANOS (Stock - No Turbo)

Postby milesinfront » Mon Aug 25, 2008 3:47 am

Engine bay pics:
Image

Image
-1988 325is BMW M52B28 - > MS2 Extra n Spark (60-2 Wheel, Wasted COP) Early Days of Tuning
-2004 Opel Corsa C / Holden Barina Z18XE - > MS1 Extra n Spark (60-2 Wheel)
-1976 Triumph Dolomite Sprint Race Car -> MS1 n 'EDIS'd
-1984 C1 2.3 Alpina -> MS2 Extra n Spark (60-2 Wheel)

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Re: BMW M52B2.8 Single VANOS (Stock - No Turbo)

Postby PUMPISH » Mon Sep 15, 2008 4:44 pm

What output do you use for VANOS solenoid?

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milesinfront
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Re: BMW M52B2.8 Single VANOS (Stock - No Turbo)

Postby milesinfront » Tue Sep 16, 2008 2:43 am

IAC2, on @ 1600, off @ 5000. (yet to be dyno checked)
-1988 325is BMW M52B28 - > MS2 Extra n Spark (60-2 Wheel, Wasted COP) Early Days of Tuning
-2004 Opel Corsa C / Holden Barina Z18XE - > MS1 Extra n Spark (60-2 Wheel)
-1976 Triumph Dolomite Sprint Race Car -> MS1 n 'EDIS'd
-1984 C1 2.3 Alpina -> MS2 Extra n Spark (60-2 Wheel)

PUMPISH
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Posts: 18
Joined: Fri Feb 15, 2008 2:15 pm
Location: Sweden stockholm
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Re: BMW M52B2.8 Single VANOS (Stock - No Turbo)

Postby PUMPISH » Tue Sep 16, 2008 8:26 am

milesinfront wrote:IAC2, on @ 1600, off @ 5000. (yet to be dyno checked)


allmost like a mercedes 24v vanos. on 1700 and off 5000

Do you use 20-30amp relay between the output from the ecu and vanos valv?

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milesinfront
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Re: BMW M52B2.8 Single VANOS (Stock - No Turbo)

Postby milesinfront » Tue Sep 16, 2008 11:53 am

There'd be plenty of smoke if I didn't.... :)
-1988 325is BMW M52B28 - > MS2 Extra n Spark (60-2 Wheel, Wasted COP) Early Days of Tuning
-2004 Opel Corsa C / Holden Barina Z18XE - > MS1 Extra n Spark (60-2 Wheel)
-1976 Triumph Dolomite Sprint Race Car -> MS1 n 'EDIS'd
-1984 C1 2.3 Alpina -> MS2 Extra n Spark (60-2 Wheel)

bmbelo
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Re: BMW M52B2.8 Single VANOS (Stock - No Turbo)

Postby bmbelo » Sun Aug 15, 2010 7:39 am

Hello...have a couple of questions about your setup. I know this thread is kind of old but I'm hoping it's not forgotten...how did you setup tacho output and VANOS control? I'm assembly 1 unit for an m50tu and been having a few issues with the diagrams. Some pics would be nice.

Gonna try posting on msextra.com also.

Thanks for any help.

Regards from Portugal, Bruno

nassso
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Re: BMW M52B2.8 Single VANOS (Stock - No Turbo)

Postby nassso » Fri May 18, 2012 1:12 am

Hi, is this your final ignition map? Can you post updated if you have? Thanks.


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