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  #31  
Old 01-12-2007, 02:20 PM
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M103 racing engine

BASIX, I am in the process of building an M103 stroker 3.6 for my racecar, could you get me the contact info for euro sport camshaft, assuming it is manufactured by Schrick.

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  #32  
Old 01-12-2007, 10:59 PM
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The rotating assembly hadn't been removed from the block when I went to the mechanic today so I took some photos with the the 1st piston at TDC. It protruded about 0.5mm from the block. This 3.2L M104 engine has a 10:1 compression ratio and 84mm stroke.
http://members.iinet.net.au/~ortolan/E320block-1.jpg
http://members.iinet.net.au/~ortolan/E320block-2.jpg
http://members.iinet.net.au/~ortolan/E320block-3.jpg
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1989 300CE "Project HWA124"
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  #33  
Old 01-13-2007, 10:22 PM
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Here are the comparison photos for the C36 pistons that I mentioned earlier.
http://members.iinet.net.au/~ortolan/C36_pistons.jpg
The size difference was more than I expected.
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1989 300CE "Project HWA124"
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  #34  
Old 03-03-2007, 01:11 PM
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[QUOTE=Ortolan;1384850]
http://members.iinet.net.au/~ortolan/300E_vs_C36_1.jpg


It appears both cranks are cast from the thin parting line. Clearly the induction hardening is visible.

Any idea of a forged crank for the M103 or 04 engine? Aftermarket?
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  #35  
Old 03-10-2007, 01:07 AM
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I'm selling my stroker motor project parts:

92.4mm AMG C36 crankshaft (used)
http://members.iinet.net.au/~ortolan/300E_vs_C36_1.jpg

Set of AMG C36 rods (new)
http://members.iinet.net.au/~ortolan/300E_vs_C36_2.jpg

Set of 89.93mm 3.6L 24v Oettinger pistons w/ wrist pins and rings (new)
http://members.iinet.net.au/~ortolan/oettinger_piston.jpg
http://members.iinet.net.au/~ortolan/oettinger_pistons.jpg

Set of OM603 piston oilers (new)
http://members.iinet.net.au/~ortolan/piston_oilers.jpg

If anyone is interested in some or all of the parts, make me an offer.
I'm located in Melbourne Australia so please remember to factor freight costs into your budget.
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  #36  
Old 12-14-2007, 09:00 PM
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would any of these parts benefit a m103 N/A build?
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1993 2.6 (040) SportLinE 5-speed - Armed to the teeth w. roof rack/2x bike carriers/8x ski carriers/MB towing bumper
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  #37  
Old 12-15-2007, 02:42 AM
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The oilers would if you are prepared to tap your block in order to install them.
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  #38  
Old 12-30-2007, 01:22 PM
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I have a 1992 300TE 4-matic with a RENNtech 3.6L M103 motor in it. The vehicle now has around 140000 miles on it with no issues. I wouldn't consider the reliability an issue. What a difference in the otherwise sluggish 4-matic-based M103!

Satish
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  #39  
Old 01-14-2008, 07:18 PM
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M103 3.0 to 3.6 Build Discussion

Man, it’s been a while… Finally have this figured out. Over the past year I spoken to dozens of people both here (US) and abroad about this build, and finally have a motor together. Got bits and pieces of help all over the world but most came from a guy that used to race and knew the folks at AMG back in the day. Started out with a clean “91 M103 with low miles, found a 350SDL crank (YES, THIS IS THE KEY) and off to the machine shop, got lucky here!!! Found a machinist that builds MBZ motors and has an open mind, he actually was into the build. Head was ported/polished, if anyone has tried this it’s in my opinion a physiological advantage, the head doesn’t lend itself well to porting as very little material can be removed. Custom rods were produced and it all went together and spins freely. No clearance problems of any kind. Next we put the rest of the motor together and drop it all into the waiting 190E J. Hopefully in less than a year this time… Keep you posted.
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  #40  
Old 01-14-2008, 10:22 PM
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Wow! Good news! Please post some pics if you can. Who made your rods? What pistons did you use? As for the porting, yeah it's a lot of work for maybe 10 or 15 CFM. I did it on my exhaust side mainly to keep it from soaking up heat.





All Pics...
http://www.putfile.com/hightechstuff2/images/65112
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  #41  
Old 01-14-2008, 11:14 PM
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Well done!! Did you bore the cylinders out to 91mm?
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  #42  
Old 01-15-2008, 01:37 PM
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M103 3.0 to 3.6 Build Discussion

No, I left the bore the same and running stock pistons. Lots of mixed opinions about opening the cyl walls. Based on what I learned the motor as is will make plenty of torque and it seems power from these motors really comes from compression, after shaving the head I'll be running 10.5:1 compression. Crower produced the rods, little pricy but got tired experimenting with off the shelf rods...

Last edited by basix; 01-15-2008 at 01:38 PM. Reason: Spelling
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  #43  
Old 01-15-2008, 01:39 PM
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Quote:
Originally Posted by basix View Post
No, I left the bore the same and running stock pistons. Lots of mixed opinions about opening the cyl walls. Based on what I learned the motor as is will make plenty of torque and it seems power from these motors really comes from compression, after shaving the head I'll be running 10.5:1 compression. Crower produced the rods, little pricy but got tired experimenting with off the shelf rods...
easy on the fonts there bud...

so is your final displacement still going to be 3.6?
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1993 2.6 (040) SportLinE 5-speed - Armed to the teeth w. roof rack/2x bike carriers/8x ski carriers/MB towing bumper
1993 2.6 (040) - deceased/reincarnated as a trailer.
1987 16v (702) - Now parting out(9/22/10)!!! - Email me your requests for 16v parts- Engine and full body kit avail!!
1987 300SDL (122)- For sale!
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  #44  
Old 01-15-2008, 03:42 PM
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Yeah, I know... No, 3.4 I'm actually more interested in torque as the motor will reside in a W201.
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  #45  
Old 02-02-2009, 06:35 PM
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Do you have more info for the people you used for the rods. I have a line on a 350 crank, and have a junk motor.

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