ahmad0658

One of my friends has the idea of installing 6.2L pistons (not sure about rods) that would from corvette C5 or lumina CR8 on E55 engine and of course with enlarging the cylinders block. Not sure about his idea and if it will be safe for the engine. As he suggest, from there it will be E55 stroker

Is it possible?

skratch77

what is the bore and stroke of the e63?

e55amgrocket

might seem like a good idea but thats going to take tons of work/research to be done not to mention a bunch of custom parts too. I think there has been a few people that have done larger displacement 55k motors but i dont think a 6.2 is possible. Theres not much room left to increase the bore unless you possibly used new liners but just seems like way too much money to bore/stroke the engine for what you will get out of it

TMC M5

If you were going to go that route, I would look to use the LS9 (ZR1) forged pistons.

Tom

Zmydust

That wouldnt be a stroker, that would involve crankshaft changes.

ahmad0658

Well, thanx for your feedback. I see some things that i don't understand

maybe a lot of money, not sure also about the cost.

I don't know really how his background about engines and mods.

More feedback is welcome please.

6.2 considered large? it could be, and that's why Brabus goes with 6.1 on their E550 or E500

Yacht Master

+1 Stroker, need to change only crankshaft and rods, on rare occasion the pistons.

buckeyewalt

+1

Speedriven1

Exactly. Bore is the piston diameter, stroke is related to the crank (distance the piston travels).

blackbenzz

Look at Havocs build... $$$ Don't try the chevy piston idea. If you want bigger displacement bore/sleeve the block and get custom forged pistons. But again it won't be cheap

Quadcammer

You have forced induction from the factory. Its far easier and cheaper to just add some boost.

ohlord

be a bored engine not stroked and no it can't be done with chevy pistons wrong pin height wrong piston profile wrong everything.
Just sleeving the mb block for larger mb profile pistons is beyond the budget of most non comp racers budgets.
My suggestion if your friend thinks an increase in bore makes it a stroker,he might want to reconsider even contemplating this kind of project.


"I don't know really how his background about engines and mods. "

We do. And he has none

Worth the wait

Why would you want to use chevy cylinders in an AMG engine?

SuperchargerV8

Y would u use pistons from an other car just get cp pistons to make u a strong piston to what every size u like

ahmad0658

I told him from beginning, it is bad idea

A lot of things to think about plus the capacity of the engine.

Another guy in our area suggested him to forget the stroker as it will be headach and look at enlarging the cylinders he suggested VATH displacement kit 5.8L, but that would be expensive for sure.

MBH motorsports

arn't these motors theoretically stroker motors to begin with? I'm not sure about the 63 so much, but the 55K is basically a stroked and supercharged 500 motor.

Max.H

Few things you should consider...

You cannot stroke a motor by increasing bore size. Stroking an engine to increase displacement is by going with a larger stroke crankshaft.

What I think you mean is boring the engine to increase displacement. Without changing the geometry of the motor.

The e55 uses a type of frm sleeve that has aluminum liners and require a special type of piston.

The piston height, wrist pin diameter, valve pocket depth and valve placement on the pistons are all very important factors you should consider. I strongly advise you don't attempt to throw some random pistons in your motor. You can resleeve your block and get custom pistons made. I know some good machine shops and pistons manufacturers that can do this type of work correctly.

Max Hughes

I can say that Mercedes uses a standard 22mm piston pin so you can run most aftermarket pistons on the stock forged rod but you need rod spacers since Mercedes pistons are rod centered(not expensive for a machine shop to do). I personally use Chevrolet "Quad 4"(think first gen Ecotec 4 banger) pistons from Wiseco and Honda H22 forged H beam rods by Eagle in my turbocharged, M104 powered E320. Difference is you guys have an aluminum block so you can't use the same rings as I would in my iron block. The question is(and one I've just posted a thread on) can you put regular 2618 or 4032 alloy forged pistons in a Mercedes block or do they use a special piston due to the silicon sleeves.