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'''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 Here I try to put together what's needed to GenBoard 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=2.4-2.6 Ohms. * Fuel pump: Stock * Stock 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 similar crank triggering, see MembersPage/GergelyLezsak/Trigger * Cam position sensor? * 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) Since I've received the [http://quasar.dynaweb.hu/~lezsi/bmw/conversion/345i/parts-1.jpg first part of the order] I'm going to make a new harness, and ordered a new 3.3 GenBoard. I want to put it together on my M20 and then move the working system (with changed values of course) to the M30 engined car. ---- '''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 * External MAP housing with connections * When GenBoard is ready, flash it with my IAC-tweaked firmware and test it on a "known good" (f.e. existing) harness * Swap the harness and test it with a "known good" (f.e. existing) ECU Marcell, please use my [http://quasar.dynaweb.hu/~lezsi/bmw/conversion/lezsi-wiring.xls original pinout] as a template for the new ECU. ---- * 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 ----
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