Frankenstein. (motor build)




Last edited by BC928; Feb 5, 2015 at 11:38 AM.
M113k piston the same size ? I heard that the crank in the only difference mening the stroke is larger in the m113k
10.5:1 compression. Piston to valve is intact, piston to deck is stock N/A M113. More power across the board, part throttle, full throttle, 2k rpm, 6k rpm, everywhere. I melted the cylinder wall running crazy timing and shifting into 5th on a top speed run but it was all due to the timing... turned the timing down and the next motor has been running great.
The Best of Mercedes & AMG
M113k rods, M113k rod bearings, M113k valve springs/retainers
M113 block, M113 crank, M113 pistons/rings, M113 heads/valves/cams
Hybrid oil pump (SL500/E55), E55 oil pan, modified E55 windage tray, ARP rod bolts/head studs
On the second motor I just changed out the M113 heads for ported M113k heads and E55 cams.. everything else is the same. I have Kleemann cams sitting on the shelf I may toy with but I want to change more of the fuel system before I bother.
M113k rods, M113k rod bearings, M113k valve springs/retainers
M113 block, M113 crank, M113 pistons/rings, M113 heads/valves/cams
Hybrid oil pump (SL500/E55), E55 oil pan, modified E55 windage tray, ARP rod bolts/head studs
On the second motor I just changed out the M113 heads for ported M113k heads and E55 cams.. everything else is the same. I have Kleemann cams sitting on the shelf I may toy with but I want to change more of the fuel system before I bother.
My hands and the significant other would prefer a longer process but that's just not how I work, haha. It's already taken too long, IMO. I've got the engine back in, trans/converter hooked up, starter, pass. header, plugs/wires, trans cooler lines, alternator, and most of the datalog wiring done. Tonight I'm shooting for driver header, all the under engine wiring, plugs/wires, rebuilt ps pump (should've taken pics when it was apart, I've got an extra if you guys want to see), and belts. I'd really like to get it running this weekend and get datalogs back to Tony at BIP.
The ML55 oil pump has one set of internal gears, a solid sprocket, an M113 oil to engine outlet, and a front sump pickup. The body and pickup is too tall for the E55 oil pan. The E55 oil pump has three sets of internal gears, an identical solid sprocket, an M113k oil to engine outlet, and twin front/rear sump pickups.
Attachment 376114
Attachment 376115
Since the E55 oil pump has a different outlet, I couldn't just add the E55 pump to the M113 block.
Attachment 376116
The solution, after a TON of research, was a modded oil pump originally for a SL500. This oil pump has the M113 oil to engine outlet and a similar sump system to the original E55, but with a larger sprocket.
Attachment 376117
Attachment 376118
Attachment 376119
If you notice, the rear sump tube system has attachment brackets to the main fasteners... but on the ML55 these were standard fasteners. I pulled the fasteners in those locations out of the E55 and they're shown below. Had new OEM fasteners overnighted from Ahmad (I'm tellin you, this guy is good), and installed them on the M113 block. You can see the finished product with the bracket fasteners installed further down the post.
Attachment 376120
I disassembled both pumps and originally wanted to use just the front casting out of the SL500, with the rest of the pump coming from the E55 pump. Unfortunately, these gear set bodies were just BARELY incompatible. Ended up with a full SL500 oil pump with the E55 solid sprocket up front.
Attachment 376121
Attachment 376122
Upper and lower oil pans went on. I didn't take pictures of the windage tray, but some modification of the windage tray was required to fit the slightly different rear sump tube system.
Attachment 376123

what you did with yours? Its still way smaller and dosent reach the bottom of pan
So where are you going with this? What's your concern here? I built the car and it ran for years before I sold it... no loss in oil pressure.
Signing off




I have a donor M113 from an ML55 and from what I can gather the only part I need to obtain would be an R230 SL500oil pump which would need some modification.
Could anyone tell me if that is correct please?
I have a donor M113 from an ML55 and from what I can gather the only part I need to obtain would be an R230 SL500oil pump which would need some modification.
Could anyone tell me if that is correct please?



