__  __
 \ \/ /
  \  / 
  /  \ 
 /_/\_\
       

    ###  
     ##  
     ##  
  #####  
 ##  ##  
 ##  ##  
  ###### 
         

  ___  
 / _ \ 
/ /_\ \
|  _  |
| | | |
\_| |_/
       
       

 __        __
 \ \      / /
  \ \ /\ / / 
   \ V  V /  
    \_/\_/   
             

  ###    
   ##    
   ##    
   ##    
   ##    
   ##    
  ####   
         

IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now.


Visit Preferences to set your user name
Summary of change:
'''Big Six Turbo''' BMW called M30 engines as "Big Six" (M20, just like mine is "Little Six"). This page is about an M30B34 turbo engine, originally in a 745i from 1985. http://www.bmwpower.hu/gallery/albums/userpics/10152/normal_45i%20017.jpg It's not a weak car even it's stock form (3.5 Turbo, automatic, see pic), but this engine is now in a light chassis (e30): http://www.bmwpower.hu/gallery/albums/userpics/10152/normal_alkatr%E9szek%20022%7E0.jpg This page is about GenBoard-ing it! '''Original setup''' Car outlines: * Engine: M30B34 turbo, 3400cc, '''6 cyl inline''', 12 Valves, SOHC * Fuel injection: Bosch injectors (part no. 0 280 150 200) maybe 270-300 cc/min @3/3.5bars (different sources say different values). R=~3 Ohms. * Fuel pump: Stock * Stock 3 bar pressure regulator, with manifold pressure reference * '''Turbo''': stock KKK K27 * Idle control : stock. (similar to M20) * Intake: stock AFM, Small stock air-to-air intercooler * Factory throttle pos switch (3 state; idle, between and WOT) * VR crank-trigger: 60-2. ** M20 baby series engine uses exactly the same crank triggering, see MembersPage/GergelyLezsak/Trigger * Cam position sensor - coil at plug wire #6 * Coolant sensors - similar to M20 * '''Knock'''. Two factory installed knock sensors. * More sensors: O2 sensor: narrowband , IAT in AFM * orig '''ECU''': Bosch Motronic 0 046 430 136 0 Buylist at MembersPage/GergelyLezsak/BuyList ---- '''Project''' Electronically the M30 engine seems very similar to the M20 little brother (from the same era: motronic 1.3). Even their original ECU can be swapped, and the engine will start up! (mapping is not the same, so don't use this as a common practice) After i've received[http://quasar.dynaweb.hu/~lezsi/bmw/conversion/345i/parts-1.jpg first part of the order] I made a new harness, and ordered a new 3.3 GenBoard. I wanted to put it together on my M20 and then move the working system (with changed values of course) to the M30 engined car. ---- '''UPDATE''' 2005.12.28-29 Car is running with GenBoard :) We'have removed the whole factory harness. (Took a while to reproduce everything) Some experience: TPS wire's and IAC open/close wire's direction is always replaced :) Had some difficulties with digital outs; EC36pin15 (Which is P259/5) didn't do anything (with the fuelpump). Tried to move it to the next pin (P259/6), resulted the same. Finally chose a different chip: S259/5, EC18pin5. It's working. Couldn't imagine what could be wrong, at the test time fuelpump out was working. After we've got fuel I made it flooded. I don't know how but my previous calculations worthed nothing. I thought fuel_req at the 12ms range, but I needed to half that, and maybe we'll half it again. Idle (which is horrible now, but that's mainly pid-related) is around 1ms pw. Don't know why, these are ~300ccm injectors. Maybe too slow to close? Will try to lower pwm value of 30%, and PowerFlyback if necessary... Since we've got 25cm of snow the day the car started, couldn't tune it yet... Some pics: Dashboard: http://www.bmwpower.hu/gallery/albums/userpics/10152/thumbnails_analog%20muszerek%20010.jpg [http://www.bmwpower.hu/gallery/albums/userpics/10152/analog%20muszerek%20010.jpg in big] The first day at the backyard (no snow at all): http://www.bmwpower.hu/gallery/albums/userpics/10152/thumbnails_udvar2.jpg [http://www.bmwpower.hu/gallery/albums/userpics/10152/udvar.jpg in big] ---- '''TODO''' * LCD with cable connection ** Done: not exactly with the specified resistors, but it's perfect. [http://quasar.dynaweb.hu/~lezsi/bmw/conversion/345i/lcd1.jpg pic1], [http://quasar.dynaweb.hu/~lezsi/bmw/conversion/345i/lcd2.jpg pic2] * Make whole harness ** Done * External MAP housing with connections ** Done * When GenBoard is ready, flash it with my IAC-tweaked firmware ** Done * Mapping * Setting IAC table/PID * Boost control * Calibrate and test knock sensors. Checked dox but can't find out what knock1_frequency values actually means? * PowerFlyback? ---- * Here is a similar car: MembersPage/MattiasSandgren/BmwSevenTwentyEight - Unfortunately the owner had to sell it for 1300 euro.. * Another similar car: MembersPage/MattiasSandgren/BmwFiveTwentyEight (Will be my daily driver //Mattias) and a [http://media.savarturbo.se/~mattias/vems/bmw_e23_728_turbo/pimpride_2005.avi movie clip] for motivation //Emil Larsson ----
Optional: Add document to category:
Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.