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http://e23.bimmerclub.ph/images/bmwlogo.jpg http://e23.bimmerclub.ph/images/728i-emblem.jpg '''1985 BMW 728i [http://en.wikipedia.org/wiki/BMW_E23 E23]''' * 2.8L inline 6-cylinder M30 engine (M30B28) * L-Jetronic fuel injection * 5-speed Getrag 260/5 manual transmission * Location: http://e23.bimmerclub.ph/images/philflag.jpg '''Upgrading to:''' * 3.5L M30B35 engine ** Engine came from a 1989 BMW 535i (E34) ** Originally used Motronic 1.3, replacing with VEMS 3.3 ** Re-built (overhauled) with new piston rings, crankshaft/connecting rod bearings, timing chain, rocker arms, valves, valve guides, seals and gaskets ** Re-use stock 60-2 crank trigger wheel * VEMS 3.3 ** Assembled VEMS 3.5 board (same schematic as 3.3) delivered 2009-06-03 *** 8 ignition IGBTs: Fairchild [http://www.fairchildsemi.com/pf/IS/ISL9V3040P3.html ISL9V3040P3], 17A, 300mJ, 400V, N-Channel Ignition IGBT *** 10 injection MOSFETs: Fairchild [http://www.fairchildsemi.com/pf/FQ/FQPF20N06L.html FQPF20N06L], 15.7A, 60V N-Channel MOSFET *** 30V flyback, ON Semi [http://www.onsemi.com/PowerSolutions/product.do?id=1N6282A 1N6282A] (1.5KE30A), 1500W 30V TVS * Convert to coil-on-plug ignition ** Use Bosch 0 221 504 100 (BMW part number 12-13-1-712-219 [http://e23.bimmerclub.ph/images/ignition-coil.jpg photo] used in 2002-2006 3/5-series M54 engines) ** Manufacture cam sync wheel to replace distributor rotor *** Sense using Honeywell [http://sensing.honeywell.com/index.cfm?ci_id=140301&la_id=1&pr_id=128148 1GT101DC] Hall-Effect Gear Tooth Sensor. *** ''Comment (2009-06-21):'' **** Make sure the sensor mounting is extremely strong. Make it as strong to be able to lift the engine. Vibrations are no fun. **** You might consider using [http://shop.vems.hu/catalog/product_info.php?cPath=1_7&products_id=113 3x2 coilpack]. It's a very good solution (more energetic sparks in the cylinder than most COPs), and the stock 60-2 crankwheel is enough * New ACCEL 24 lb/hr injectors, 14.0 ohms (stock for M30B28 is 19 lb/hr)
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