M30 engine and parts weights

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Mike W.
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M30 engine and parts weights

Post by Mike W. »

I've seen it get discussed more than a couple of times now, just how much does an M30 weigh. The answers were heavier than I thought it should be. But since I'm breaking down an engine now to get rid of it I thought I'd weigh some stuff. This is just on a bathroom scale, nothing fancy, but it ought to be ballpark.

Crank 60
Head 65
Block 135
Pistons/rods 18
Pan 10
Starter 20
Alternator 15
A/C comp 20
Dampener 12
Intake 18
Exhaust 11
Flywheel 22
Clutch 18

Complete 424
Pan to Valve cover 288
Reciprocating/rotating 140

And the above is heavier than I expected. The complete number isn't really complete, it doesn't include any FI, or P/S pump, actually not even the timing covers or chains or oil or water pumps. So it's more in the 450 pound range if you count everything like some do. But to me it's more in the just over 300 range if you don't count the accessories. And the reciprocating/rotating number at ~140 pounds is a hell of a flywheel. :D

ElGuappo
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Post by ElGuappo »

Nice work Mike, I've been meaning to do this.
I got a nice digital freight scale from work for just this sort of thing...of course its been sitting under a cabinet for months now, doing a whole lot of nothing... :roll:

wkohler
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Post by wkohler »

ElGuappo wrote:Nice work Mike, I've been meaning to do this.
I got a nice digital freight scale from work for just this sort of thing...of course its been sitting under a cabinet for months now, doing a whole lot of nothing... :roll:
How much does the cabinet weigh?

Bimmerguy2002
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Post by Bimmerguy2002 »

wkohler wrote:
ElGuappo wrote:Nice work Mike, I've been meaning to do this.
I got a nice digital freight scale from work for just this sort of thing...of course its been sitting under a cabinet for months now, doing a whole lot of nothing... :roll:
How much does the cabinet weigh?

:rofl:


All that is fine and dandy Mike, but i could have told you that it takes two people to put a long block m30 in the back seat of an e28 :laugh: :shock:

Mike W.
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Post by Mike W. »

Bimmerguy2002 wrote:
All that is fine and dandy Mike, but i could have told you that it takes two people to put a long block m30 in the back seat of an e28 :laugh: :shock:
Long block yeah, but I've hefted a bare block into a trunk by myself. Machine shop thought I came with a pickup. :roll:

12valves
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Post by 12valves »

while we're on the subject, here are some things I've weighed recently:

bare m50 block 100lbs
head (w/ valves and springs) 47lbs
2.5 crankshaft 43lbs
flywheel (dual mass) 28lbs
rods and pistons ~15lbs
harmonic damper 7lbs
main caps and bolt 8lbs
camshaft 7lbs
cam cage and lifter assembly 6lbs
oil filter housing 6lbs
starter 8lbs

wkohler
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Post by wkohler »

I'd like to see someone weigh a B35 block compared to a B34.

ElGuappo
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Post by ElGuappo »

I have a B35 block 'seasoning' in the back yard, perhaps next weekend I can get that weighed.

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