Anyone know if there are forged pistons and connecting rods available for M103 engines. If its available it'll be something I would probably do in the future when its time for the current engine to retire.

 

And you're sure M103 wasn't made with them at the factory?

According to 1988 "300 Class" brochure:

Light-alloy pistons

Forged steel connecting rods.

Forged steel crankshaft.


You're not going to be able to improve on this from hot rod sources.

 

call JE pistons to see if they make you some ?...why would you want to do this.......are we expecting major mods?.....

 

The rods and crank are forged from Benz. The pistons are gravity cast.

Unless you want to go forced induction, I would stay with stock cast pistons and the great piston to wall clearance they allow.

I just picked up a used 300 E engine and have some plans for it over the fall and winter this year. If I come up with some forgings, I will keep you updated. Of course, the 300 E I am building is going to have the an exhaust gas driven huffer hanging off the side

Don~

 

I came across a spare engine. Nothing wrong with it, just a little tired. If I pick it up I'm thinking of taking it apart and rebuilding it w/ reinforced parts. Build it to withstand nitrous use. This is if I get it.

 

Most gravity cast pistons dont like N20 for too long. So, forged slugs might be a worthwhile investment.

We run insane amounts of N20 in Diesels nowdays and I ran my share of it in gasser race cars in the 80/90's.

Forged pistons or really stout cast is a must for big gains and durability.

Don~

 

That's what I'm after Don_M. I figure the format of the early M103 engines is perfectly suited to hide the lines and solenoid under the huge airbox. No one would notice it.