Hey, ive been looking around, and I was wondering if anybody has blueprinted their 300E or stroked it? I heard bekker's used to sell a stroker kit, but they said they don't sell it anymore, and didn't reply when I asked what parts the kit included. Ive heard of impressive gains by blueprinting american v8s, but I doubt German units would yield as much horsepower considering their stringent fault tolerances at production. Also, has anybody tried replacing their head gasket with a thinner one? Or perhas even new connecting rods for the pistons to increase stroke? These are all things that could be relatively inexpensive and yeild a boost in compression which equates to more hp....

The M103 is already at nearly one horsepower per cubic inch. That's a measure we used to use for race engines . I would tend to think any more increase would have to come from forced induction and/or fuel management. Just my $.03 worth. (inflation adjustment)

Yeah, I've run into this. I've looked for ways to improve performance, but most people are quick to point out that this engine is in no way significantly restricted. It was engineered with quality, so it's hard to look for simple upgrades. I'd like to get the mossleman, but for over 6 grand, i might have to settle with what i have for the time being...

Yea, I guess its just too bad... I suppose we are really limited by the sohc inline design, considering its what... 17 years old now? I mean, you got Acura making 200hp 2 litres, but they use all kinds of variable valve timing and intake... but, like I said, the engine is 17 years old, there must be something that can be done... Does anybody know if the head can be milled? Or perhaps where to locate the parts for the stroker kit? I mean, it was sold at one point in time, there has still got to be some connecting rods and piston heads somewhere!!!

Badinfo,

You would probably be better off just selling the 300E and upgrading to a 400E or a high mile 500E which can be found in the low $20k's. As many can attest to, this is the best bang for the buck in the long run.

Good Luck

no way... where is the fun in just buying a faster car? There is no uniqueness, no hands on labor, just buying a new title... if I wanted to do that... I would have been driving a shiny Supra right now My parents would never let me sell the Benz to make way for anything, not even a 500, so that is definetaly out, but I can work on my car, and I have time this summer... I just need to find something to do!!! (And no, cleaning my car doesn't count, I do that every weekend thankyou)

Bring the car to me at MB Autowerks and I will make it run!

HMMMM Turbo and intercooler with stand-alone fuel management... HP would be about 400+

But, it would be big money.

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Benzmac:
Donnie Drummonds
ASE CERTIFIED MASTER AUTO TECHNICIAN
MERCEDES SPECIALIST 11 YRS

awww, i would sooo love to stop by your shop... too bad im stuck over here in WA

hehehe.... turbos and intercoolers, yea, that sounds about right!! Hehe, now look at what youve done, im going to have to waste my entire summer!!

I am building an engine right now. I just bought a blow engine for relatively cheap and i know a guy who i am going to work with on the head. For the head, I am thinking bigger valves and just a port and polish. For the rest of the engine, it is being built for a turbo...I will lower the compression a bit, and put forged pistons and rods in. I am also working on desiging a better piston oiling system for the upgraded HP. Other than that, and lightening up the flywheel quite a bit, that will be my engine. Then i am just going to design a bi-turbo for it and see what i can put out with a custom fuel system and maybe water injection. So we shall have to see. I will have the engine dynoed and post up here eventually what i put out. Depending on how i feel about my 190E 2.3 8V and converting the engine to the M103 that i build, i will either keep the engine, or i will put it up for sale for all of you 300E and 190E owners to bid on. I will keep you updated.

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George Carstens

are you going to have the rods and pistons custom made? or is there someplace that sells exotic application parts for this engine?

I have a set of 8:1 custom forged pistons, and other parts too I ordered some fully ported cyl heads from Europe I have lot of friends there working with these cars. I also can make exhaust manifolds and other parts Please check my post for Fuel enricment and KE- Jetronic tuning, some free HP there, that tuning is almost necessary for turbo cars I am going to add more pictures there I build several custom turbo cars before.

As far as I know, and I could be wrong, is that the 3.6L stroker conversions done by Brabus and RennTech on this engine involve using a crankshaft from the 350 diesel engine. I don't know what the rest of the configuration is though. I do know these guys get ~$13k for the job. The 3.6 M103 puts out nearly 275hp, not bad for a 2 valve sohc.

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1995 G320
1984 280GE
1971 Unimog 416

Good gugally-mugally!!! Is it supercharged?

G-man is that crankshaft from GM 350 Diesel is that little bit too wild, there is no way to fit somethink like this V8 crank for srtaight 6? I have seen stroke kits for sale includes piston set they customice your old crank, they add metal outside of connecting rod journey, and grind of opposite side, means more stroke. Price was about $2000 but that is just the start for the process, then you may have trouble with connecting rods, also have to port head, bore the block and Etc.. But I like to do that