If your wife is on board with keeping them, absolutely do NOT sell them!..
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k24a2 swap
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Originally posted by Michael Star View Post
Ya we were really lucky as it was a mile or so from where I live
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Not sure whether you kept your swap or not, but if you happen to still have your M20 kicking around and some scales would you mind weighing the M20 vs the K24. I’ve been toying with the idea of the K-swap, but internet searches seem to point to the M20 being lighter than the Honda. Seems counter intuitive I know given the alloy construction of the K series, but people forget how compact the BMW engines actually are + once you factor in twin cams, VTEC etc. it all adds weight. Looking at engines from the era, the M20 is only slightly longer than a Nissan L-series 4 cylinder for example (and way more compact than a L-series 6). Even with its alloy block, a Nissan SR20 weighs more than an M20 - they’re actually a pretty big engine for a 4 cylinder.
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I've compared weights quite a bit.
Google searching shows M10s range between 300-320 lbs. depending on what it came from. Whereas m20s range between 390-400+ lbs.
So roughly 100-120 lbs. less than an m20. Plus nearly all of that weight does not cross the front subframe.
R3v thread: https://www.r3vlimited.com/board/for...eight-plus-pic
From another thread:
Originally posted by george graves View Post
M10 = 82kg = 184 lbs
M42 = 100kg = 220 lbs
S14 = 106kg = 233 lbs
M20 = 117kg = 257 lbs
M30 = 143kg = 315 lbs
M50 = 140kg = 308 lbs
S50 = 152kg = 334 lbs
(Taken from here: http://www.unixnerd.demon.co.uk/enumber.html)
Originally posted by Jonsku View Post
Here's weight list from www.e30.de I assume that all the ancillaries are included in these weights.
M40B16 132kg
M20B27 175kg
M52B28 170kg
M50B25 198kg
M60B40 210kg
M30B35 212kg
M102 225kg
S38B36 232kg
M70B50 250kgLast edited by DEV0 E30; 02-04-2022, 12:17 PM.
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Thanks - just went back and re-read the Honda forums as many quote the K24 at 413lbs fully dressed. Just realised though, because they’re dealing with fwd ‘fully dressed’ includes the transmission (they want to know how much additional weight they’re adding to the front axle).
The e30.de weights are fully dressed, although the M50 looks slightly light, normally they’re listed as 207kg.
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Originally posted by lukeADE335i View PostNot sure whether you kept your swap or not, but if you happen to still have your M20 kicking around and some scales would you mind weighing the M20 vs the K24. I’ve been toying with the idea of the K-swap, but internet searches seem to point to the M20 being lighter than the Honda. Seems counter intuitive I know given the alloy construction of the K series, but people forget how compact the BMW engines actually are + once you factor in twin cams, VTEC etc. it all adds weight. Looking at engines from the era, the M20 is only slightly longer than a Nissan L-series 4 cylinder for example (and way more compact than a L-series 6). Even with its alloy block, a Nissan SR20 weighs more than an M20 - they’re actually a pretty big engine for a 4 cylinder.
I didn't get a chance to weigh the m20 but without accessories and exhaust, but including intake it felt like it weighed a lot more than 100lb difference. Me and my buddy picked up the k24 without issue( just the block, head and valve cover).
Im hoping when it gets warmer I might have time to start it up again.
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