E30 Zone

Hi there.. Im just wondering what grade engine oil to use. (or what is the original engine oil BMW recommends)

http://www.esatclear.ie/~bpurcell/index.html

Technical Info

Designation : M42B18
Torque and Power graphs (standard and after modification) :

Dimensions (nominal) : 84mm/3.31" bore x 3.19" stroke
Displacement : 1796 cc
Camshaft : Duration: inlet 252 exhaust 252 Lift: inlet 10.2 exhaust 10.2
Lobe height: 1.8755-1.8803"
Con-rods : Max. weight variance without bearing shells: 4g/14oz split equally between big and small ends
Crankshaft : End play: 0.0031-0.0064"
Thrust on cylinder 4
Cylinders : Max. ovality: 0.01mm/0.0004"
Max. taper: 0.01mm/0.0004"
Cylinder head : Height = 140mm/5.512"; minimum height = 139.55mm/5.494"
Firing order : 1-3-4-2
Fuel Pressure : 43 psi
Oil pressure : 1.3-2.0 Bar/18 psi @ idle, 4.0-4.3 Bar/57-62 psi at 6250rpm
Oil Filter : Hengst E88H D24 in-bowl type
Oil Type : I would recommend a 5W40, 5W50 or 10W50 fully synthetic (the text book says 15W50) as the tappets seem to prefer a lower viscosity oil
Output : 134 (cat) -136 (non-cat) bhp @ 6000rpm; 127 ft-lb @ 4600 rpm
Pistons : Clearance: 0.0004-0.0016"
Piston rings : Gap: Top & bottom compression rings = 0.0080-0.0160" ; oil ring = 0.0080-0.0180"
Compression pressures : 10-11bar (143-156psi):
Torques : Big ends: Step 1 = 23Nm/17 ft-lbs, Step 2 = +70 degrees
Camshaft sprocket: 13-17 Nm/10-12 ft-lbs
Camshaft bearing cap bolts: 13-17 Nm/10-12 ft-lbs
Crankshaft damper: 300-320 Nm/217-231 ft-lbs
Cylinder head: Step 1 = 30-35Nm/22-25 ft-lbs, Step 2 = +90-95 degrees, Step 3 = +90-95 degrees
Exhaust manifold: 22-24Nm/17-18 ft-lbs
Flywheel: 82-94 ft-lbs
Intake manifold: 13-17Nm/10-12 ft-lbs
Main bearings: Step 1 = 20-25/14-18 ft-lbs, Step 2 = +47-53 degree turn
Viscous fan coupling (LH threads): 40-50Nm/29-36ft-lbs
Timing chain tensioner: 23-27Nm/17-19 ft-lbs
Valves : Seat angle: 45 degrees
Valve stem to guide clearance: 0.020"
Inlet: Solid, stem diameter 6.975mm/0.2756", head diameter 33mm/1.299"
Exhaust: Sodium filled, diameter 6.975mm/0.2756", head diameter 30.5mm/1.201"
Seat diameter: inlet = 31.6mm/1.244", exhaust = 29.1mm/1.146"
Seat width: 1.4-1.9mm/0.055-0.075"
Valve clearance : None, automatically compensated by hydraulic tappets

Fuel System
Injectors: Flowrate: 170 cc/min
Test pressure: 3 Bar/43psi
Coil resistance: (@20 deg C/68 deg F): 15-17.5 Ohms
Ejection angle: 30 deg


Ignition

Motronic : Bosch DME 0-261-200-175 Software version 1.7 (US details)
Spark plugs : 16mm 3 electrode NGK BKR6EK or Bosch F7LDCR. The Champion RC8DMC can be used too. Note a 4 electrode platinum plug has been approved for the M42 engine with max. 100,000 miles life, BMW part# 12 12 9 071 003, NGK BKR6EQUP or Bosch FGR7DQP.
Installation torque 27-33Nm/20-24ft-lbs
Plug gap : As specified above, they are unadjustable (pregapped) otherwise 0.027"
Idle Speed : 850rpm

Cheers! BMW recomended me 0W40, but i want to use 5W50 (brought from Halfords).

rwikky wrote:5W50 (brought from Halfords).

you mean the cheap stuff?

lol what am i suppose to use? and where shell i purchase it from! I brought a (5lt) bottle of Engine Oil and it reads 'Fully Synthethetic Motorsport Oil' i brought it bcuase it actualy had a BMW E30 pic printed on the front.
http://www.halfords.com/webapp/wcs/stor ... ryId_77306 this is what i got!!!!! would you recommd me using it????

Depending on how much you want to spend, Castrol magantec is a good bet, if you want to spend more, go for some silkolene pro s, available from the Oilman.

HTH

Pal

I want to use the best oil to be honest! money isnt a problem! can you please let me know where i can purchase the oil from?? i took the car to get the oil change and becuase i didnt knw what oil it is currently running on they declined to do it! can oil rates be changed as in 0W40 to 0W50?? (soory for asking stoopid Questions im only 19yrs old and my E30 is my first car

rwikky wrote:lol what am i suppose to use? and where shell i purchase it from! I brought a (5lt) bottle of Engine Oil and it reads 'Fully Synthethetic Motorsport Oil' i brought it bcuase it actualy had a BMW E30 pic printed on the front.
http://www.halfords.com/webapp/wcs/stor ... ryId_77306 this is what i got!!!!! would you recommd me using it????

thats to attract the boy racers, even though they wouldnt no what to do with it.

rwikky wrote:(soory for asking stoopid Questions im only 19yrs old and my E30 is my first car

i just do what the other zoners recomend. Im learing about my 'is' all the time.

Fuchs SynPlus from German and Swedish, about £25 for 4 l of 5-40.

Moz