engine dientions and weights

[chuntington101]

anyone know of a god site or sites to get these bits of info from??

im looking into the Skyline in-line 6 and the BMW in-line 6!

thanks Chris.

[Marquis_Rex]

I can't help you with a site or the Skyline stuff but I know the BMW inline six weights quite well- broken down also.

[chuntington101]

any chance you could disclose the info on the BMW plant?? i understand if you cant!

thanks Chris.

[Marquis_Rex]

Sure thing, I'm feeling a bit ill at the moment, but may be next week?

[chuntington101]

thats fine mate.

thank you

chris.

[chuntington101]

thats fine mate.

thank you

chris.

[Marquis_Rex]

Sorry about the delay mate:

Cast iron block BMW M50 (As fitted to early E36 325 and 320is-non VANOS)
198 kgs.
BMW M52 engine-single VANOS, alloy block (as fitted to E36 323i and 328is etc etc) 160 (dry)- 170 kgs(wet)
With dual VANOS and "torque based" ECU mapping weight went up to 180 kgs (M54 in the E46 was it?)

These above weights are taken from "The History of BMW Engines" considered a definitive technical guide. In addition- I have weighed the 328i M52 myself, and broken it down (all in Kgs-sorry Americans!).

Exhaust Manifold 5.5
--
Gasket* 1.5
Throtle body housing 0.905
Injection system 0.411
Alternator 5.950
Wiring loom 5.370
Chain tensioner 0.320
Pistons 2.628
Cylinder Block 21.800
Crank shaft including drive sprocket 23.750
Main bearings 2.870
Air filter 1.820
Cam drive * 0.550
Oil Filter 0.252
Oil Pump 1.100
Oil filter 4.600
Con rods 3.588
Anciliary belt drive 2.650
Intake system 2.850
Flywheel 10.350
Extras: 14.700
Starter 3.250
Water pump 1.007
Ignition system 2.446
Cylinder head complete 37.650
Cam Cover 2.000
Total weight 159.817 Kgs

The S50 321 bhp 3.2 litre BMW "evo" M3 engine weighs
220 Kgs (similar if not a little MORE than an S38 3.8 litre 340 Bhps straight six M5 engine!!)

Makes an interesting comparison with the V12 2 valver BMW (alloy block) of 250 Kgs

And just for reference some of the weights of the OLDER 2 valve BMW engines

M20 (2 valver as fitted to 1980s 323i, 325i etc etc) 175 Kgs
M30 (trusty 2 valver BMW straight six) 200-210 kgs (depnding on spec and year)

I hope this helps

[eliot]

Marquis_Rex said:

The S50 321 bhp 3.2 litre BMW "evo" M3 engine weighs 220 Kgs (similar if not a little MORE than an S38 3.8 litre 340 Bhps straight six M5 engine!!) Makes an interesting comparison with the V12 2 valver BMW (alloy block) of 250 Kgs And just for reference some of the weights of the OLDER 2 valve BMW engines M20 (2 valver as fitted to 1980s 323i, 325i etc etc) 175 Kgs M30 (trusty 2 valver BMW straight six) 200-210 kgs (depnding on spec and year)

Crikey, A fully dressed LS1 or LS6 Chevy V8 Weighs the same - and is more powerful and dare i say cheaper to purchase, tune and rebuild.

[Marquis_Rex]

eliot said:

Marquis_Rex said: The S50 321 bhp 3.2 litre BMW "evo" M3 engine weighs 220 Kgs (similar if not a little MORE than an S38 3.8 litre 340 Bhps straight six M5 engine!!) Makes an interesting comparison with the V12 2 valver BMW (alloy block) of 250 Kgs And just for reference some of the weights of the OLDER 2 valve BMW engines M20 (2 valver as fitted to 1980s 323i, 325i etc etc) 175 Kgs M30 (trusty 2 valver BMW straight six) 200-210 kgs (depnding on spec and year) Crikey, A fully dressed LS1 or LS6 Chevy V8 Weighs the same - and is more powerful and dare i say cheaper to purchase, tune and rebuild.

YES! Indeed, when you look at HP/weight the M engines aren't quite as glorious as their BHP/litre hype might have you believe. That data was directly measured and was NOT published in the official BMW book I mentioned, few of the M engines were...I wonder why!!