2.0l M42
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M42_Jester

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2.0l M42
« Reply #45 on: July 02, 2009, 12:26:07 AM »
Quote from: hesgone2fast;59209
I have used:
-M42 E36 block
-M47 crank
-S52 pistons
-M42 E30 rods
-M42 E30 head,fully rebuilt,shaved 0,2mm, fully ported, 6mm valves, MM bee-hive springs, MM retainers and shims
-Schrick camshafts
-Schrick lightened hydraulic lifters
-MM heavy duty, trimetal, teflon coated rod bearings
-MM 360º main bearings
-MM head bolts
-E36 M44 86mm headgasket (thicker than stock)
-All new chain, guides, E36 tensioner, gaskets.
-E36 Serpentine belt system


u've just used second hand S52 pistons correct? would it be better to get them custom made at the right compression instead of getting them decked?
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psyyambmw

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m47 crank what a drill?
« Reply #46 on: July 02, 2009, 02:26:37 AM »
I don't get it? How come m47 crank gains such that big deal :confused:

any elaboration please ;)
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M42_Jester

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2.0l M42
« Reply #47 on: July 03, 2009, 12:41:36 AM »
i think it's because of the stroke being larger from the M47 crank to the M42 or M44 crank. couple that with rods and pistons from an S52 and you got a pretty sweet setup...hope to do it myself one day...
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rob_e30

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2.0l M42
« Reply #48 on: July 03, 2009, 01:23:10 AM »
Quote from: psyyambmw;74686
I don't get it? How come m47 crank gains such that big deal :confused:

any elaboration please ;)


The stroke is 8mm longer (about 10%) which will increase both displacement and torque.
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KhmerMafia781

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Bump
« Reply #49 on: July 05, 2009, 07:26:32 AM »
MORE INFO thinking about this project myself(INTERESTING POST)
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psyyambmw

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m47 crank
« Reply #50 on: July 05, 2009, 07:57:38 AM »
umm! anyone got a pic or link of the m47 crank? :confused:

What exactly does it look like?  :cool:
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M42_Jester

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2.0l M42
« Reply #51 on: July 06, 2009, 12:15:38 AM »
here is a link to a guy who is doing a 2.0L conversion
his crank is a machinged M47 crank, but it's basically the same thing

http://www.m42club.com/forums/showthread.php?t=254

hope this helps
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psyyambmw

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2.0l M42
« Reply #52 on: July 07, 2009, 07:40:40 AM »
Holy Mother Cow!  :eek:
That is an entire crankshaft! I just can’t imagine what exactly it is till ‘ve seen the picture though. No wonder for all that claims now.

Does it just direct bolt on? Any modification need? :confused:

Adore all the guys that possibly build it. :rolleyes:

Thanks for your input Jester ;)

George :cool:
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b-rad

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2.0l M42
« Reply #53 on: July 09, 2009, 12:06:52 AM »
Quote from: psyyambmw;74911

Does it just direct bolt on? Any modification need? :confused:


Please read around some more. It requires extensive modification, and ALOT of careful measuring. I hardly call a crank shaft a 'bolt on' mod...
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psyyambmw

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2.0l M42
« Reply #54 on: July 09, 2009, 03:32:40 AM »
Quote from: b-rad;74996
Please read around some more. It requires extensive modification, and ALOT of careful measuring. I hardly call a crank shaft a 'bolt on' mod...


Well! Obviously, you just gave me the right answer though :p

Thanx anyway bro for chiming in ;)
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psyyambmw

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2.0l M42
« Reply #55 on: July 10, 2009, 03:57:48 AM »
Well! Here's one of my search :D http://forums.bimmerforums.com/forum/showthread.php?t=433471

Quote from: Gizmo318i;5192678
Well, I have finally started my project to build a replica S42B20 motor.

At this stage I was going to use the M44 crank which had an 83.5mm stroke but found out that a M47 (E46 320d) crank might fit, it did. Now I have an 88mm stroke. The nice thing about the M47 crank is it has the same dia. big-ends and main bearings as the M42/M44. And its a forged crank! With the 86mm bore and 88mm stroke its now a 2045cc motor (nearly a 2.1lt). With M3 3.2lt pistons it would be a 2069cc. I am using the M44 rods for the job, the pistons are being decked and pocketed this week, this will make 'em flat-top and raise the compression some too.

Once I get everything back from the engineers I will have the whole bottom-end fully balanced and look into that stupid harmonic damper...

...


it looks like it just bolt-on on his combination only balancing the shaft, is that true? :confused:
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fabe

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2.0l M42
« Reply #56 on: July 10, 2009, 04:03:20 AM »
Quote from: psyyambmw;75056
Well! Here's one of my search :D http://forums.bimmerforums.com/forum/showthread.php?t=433471



it looks like it just bolt-on on his combination only balancing the shaft, is that true? :confused:


buy the M47 crank, put side by side and compare the difference then you'll definitely know what's the difference..

It needs to be modified. no question about it.. not just buy and then straight bolt-on.. u wanna know details, search more about it.. Can go to http://www.metricmechanic.com to download the write up on M42/M44 mods..
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psyyambmw

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2.0l M42
« Reply #57 on: July 10, 2009, 04:17:42 AM »
Quote from: fabe;75057
buy the M47 crank, put side by side and compare the difference then you'll definitely know what's the difference..
..


That was what I doubt :rolleyes:
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bwawuz02

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2.0l M42
« Reply #58 on: July 15, 2009, 10:21:02 AM »
Quote from: JP 91iS;59215
Nice.  When you ordered your MM stuff, did you consider using their single row timing chain?  I'm trying to find out if they even sell it separate from one of their built engines.


euro S38 timing chain: 11311401379
crank sprocket: 11311305396
intake sprocket: 11311305391
exhaust sprocket: 11311305392

available at http://www.ecstuning.com for around $300 i think, bmaparts.com didn't list it, can't access fap99.com from work. I think you need the correlating dowel pin and spring washer as well. check realoem.com for more details

anyone know if the s38 lifters will fit in our m42 head, or what solid lifters MM is offering in their kit?
« Last Edit: July 15, 2009, 10:23:09 AM by bwawuz02 »
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bwawuz02

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2.0l M42
« Reply #59 on: July 15, 2009, 11:31:12 AM »
personally i'm trying to procure a M42 to build up...

M47 crank
86mm pistons
single row chain
deltacams regrind
valvetrain upgrade for durability/longevity
MM 360* bearings

what other engines used forged con-rods?
will m54 rods fit? (not sure on big/small end diameters)
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