Stroking the M113K
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Joined: Nov 2007
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From: San Diego
E55
Yes, Ive thought about this also… Could be really nice. You can offset grind a crank to increase stroke and with the addition of sleeves you can increase displacement to about 6 liters safely, while using the factory AMG crankshaft.
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From: Orlando
1967 Pro Touring turbo LSX Camaro
To offset grind yould need to reduce the diameter of the rod journals. Unfortunately they're already one of the smallest bearings available. There's some D series Honda bearings that could net you a tenth or two of an inch in stroke. However then we get into everything else custom in the bottom end plus get to deal with the clearance of the piston skirt to the crank counterweights.
I've been over this plan fairly thoroughly and while It's not easy, it's definitely not impossible. I'm always up for fun and interesting projects , get a hold of me if you're serious about building one. I can either build it or offer up some useful advice.
I've been over this plan fairly thoroughly and while It's not easy, it's definitely not impossible. I'm always up for fun and interesting projects , get a hold of me if you're serious about building one. I can either build it or offer up some useful advice.
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Joined: Nov 2007
Posts: 3,681
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From: San Diego
E55
Ohh I was hoping we can use the Honda B series or H series bearings. A lot of V8 guys use them…
Ive stroked a few motors this way. It's been awhile but, Im almost certain the machine shop I used welded material then offset grinded the crank to increase stroke.
I think money spent on CNC porting the heads and radical camshafts specs will yield much better results, easier and less "custom" work. Because even if you are successful at stroking the motor. Your cams will be too small and the motor will be running out of air. So by increasing airflow at the cylinder head (where power is created) would be the optimum choice.
Ive stroked a few motors this way. It's been awhile but, Im almost certain the machine shop I used welded material then offset grinded the crank to increase stroke.
I think money spent on CNC porting the heads and radical camshafts specs will yield much better results, easier and less "custom" work. Because even if you are successful at stroking the motor. Your cams will be too small and the motor will be running out of air. So by increasing airflow at the cylinder head (where power is created) would be the optimum choice.
Last edited by Max.H; Feb 15, 2015 at 05:06 PM.
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Joined: May 2007
Posts: 276
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From: United Kingdom
CLK56TT (WIP), S65, RR 5.0 S/C
Vaeth 5.8L conversion is a stroker kit so it's definitely doable on our engine. May require a new crankshaft which is mega money so if we could do away with our existing crankshaft I'd be up for it. 200-300cc with a stroker kit, 100cc with a 1mm overbore and you're getting close to 6L.
Last edited by Alex L; Feb 16, 2015 at 05:46 AM.
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Joined: Feb 2013
Posts: 659
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From: SE MI
2005 Mercedes E55 AMG
65 AMG V12 6.0L block has +0.6mm bigger bore and +6mm longer stroke over the 5.5L 600. To gain 1/2 litre out of a V8 55 one would need to stroke 9mm (12cyl * 6mm / 8cyl), which may be a bit optimistic? I'd still be up for trying something like this out as I'm going with +1mm bigger bore, custom pistons and conrods anyway. Trouble is my engine is half way across Atlantic at the moment so I'd need to find a shop (ideally in California as that's where the block is heading), that will be comfortable offset grinding it. Bearings would be the next problem.
Vaeth 5.8L conversion is a stroker kit so it's definitely doable on our engine. May require a new crankshaft which is mega money so if we could do away with our existing crankshaft I'd be up for it. 200-300cc with a stroker kit, 100cc with a 1mm overbore and you're getting close to 6L.
Vaeth 5.8L conversion is a stroker kit so it's definitely doable on our engine. May require a new crankshaft which is mega money so if we could do away with our existing crankshaft I'd be up for it. 200-300cc with a stroker kit, 100cc with a 1mm overbore and you're getting close to 6L.
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From: Mercedes-City, Germany
E55 AMG (W211)
Brabus made stroked M113 engines:
- 5.8: n/a engine with 1mm more stroke and 2mm bigger bore diameter
- 5.7K: supercharged n/a engine with 1mm more stroke and 1 mm bigger bore
- 6.1: n/a engine with 5mm more stroke and and 2,5mm bigger bore
Väth also made a stroked M113 engine:
- V58K: M113ML-Block with 3mm more stroke and 1mm more bore (620HP)
Brabus and Väth used specially made crankshafts. None of them grinded the OEM crankshaft !
- 5.8: n/a engine with 1mm more stroke and 2mm bigger bore diameter
- 5.7K: supercharged n/a engine with 1mm more stroke and 1 mm bigger bore
- 6.1: n/a engine with 5mm more stroke and and 2,5mm bigger bore
Väth also made a stroked M113 engine:
- V58K: M113ML-Block with 3mm more stroke and 1mm more bore (620HP)
Brabus and Väth used specially made crankshafts. None of them grinded the OEM crankshaft !
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Thread Starter
Senior Member
Joined: May 2007
Posts: 276
Likes: 30
From: United Kingdom
CLK56TT (WIP), S65, RR 5.0 S/C
Thread Starter
Senior Member
Joined: May 2007
Posts: 276
Likes: 30
From: United Kingdom
CLK56TT (WIP), S65, RR 5.0 S/C
Brabus made stroked M113 engines:
- 5.8: n/a engine with 1mm more stroke and 2mm bigger bore diameter
- 5.7K: supercharged n/a engine with 1mm more stroke and 1 mm bigger bore
- 6.1: n/a engine with 5mm more stroke and and 2,5mm bigger bore
Väth also made a stroked M113 engine:
- V58K: M113ML-Block with 3mm more stroke and 1mm more bore (620HP)
Brabus and Väth used specially made crankshafts. None of them grinded the OEM crankshaft !
- 5.8: n/a engine with 1mm more stroke and 2mm bigger bore diameter
- 5.7K: supercharged n/a engine with 1mm more stroke and 1 mm bigger bore
- 6.1: n/a engine with 5mm more stroke and and 2,5mm bigger bore
Väth also made a stroked M113 engine:
- V58K: M113ML-Block with 3mm more stroke and 1mm more bore (620HP)
Brabus and Väth used specially made crankshafts. None of them grinded the OEM crankshaft !
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2005 e55 AMG
Man ...I dont think there is any room for an external pump or the tank mounted somewhere.
How about a vacuum pump. They are always good for 15-30 hp depending on the engine . I did a few Electric pump set ups like the corvette but never got to dyno it. That would be very easy as I am poking around right now ob what to do. On my Mustang I had the pcv system with one way check valves. As soon as the engine made 3 lbs of boost ,the pump would turn on. So the factory system was still intact and the pump was an add on.
How about a vacuum pump. They are always good for 15-30 hp depending on the engine . I did a few Electric pump set ups like the corvette but never got to dyno it. That would be very easy as I am poking around right now ob what to do. On my Mustang I had the pcv system with one way check valves. As soon as the engine made 3 lbs of boost ,the pump would turn on. So the factory system was still intact and the pump was an add on.
