AlphaJaguar5

Post em if ya got em!!!

Wish I had the pics of mine

Sharkey

iTrader: (1)

thats what happens when you push the boost up on stock 2.2l pistons. it was a motor in a buddys sunbird (2.2l ecotec swapped in and boosted). wasnt that much boost though, however the car was pushing some good power. now i know it looks like it detonated to hell and beyond, but thats not the case. 2.2l have the top ring very close to the top of the piston, and throw some boost at them and they break the top of the ring land off, it along with the ring bounce around beating the hell out of the piston and combustion chamber.

ItalianJoe1

iTrader: (10)

Don't worry, you can make some more soon with the new blower.

Blown 4-banger

It didn't melt, but it got hot enough for the piston to break (what cast pistons are infamous for). The new forged is next to it

AlphaJaguar5

If that blower can melt my diamonds I might need cylinder sleeves made of uranium next time.

qwikredline

diamonds good ur safe

AlphaJaguar5

Stop stalking me!!

I'll give you my lunch money!

nghisus

Haha, I love how Ford churches it up and calls it "Hyper Eutectic", then I took a materials science class and learned what the eutectic line actually was. What a fancy way to say cast!

Omega_5

It's not so much the heating process... as it is the cooling process that defines how the metal's molecules align.
But with anything... there are many variables in metallurgy.

AlphaJaguar5

Actually "Hypereutectic" is different than "Eutectic."

Hyper means over so instead of just 2 elements being bonded together the addition of another one makes it "Hyper" in the case of a "Hypereutectic" piston the addition would be silicon.

And I don't know where Ford comes into play here.

Area47

it's a addition of a certain percentage of silicon.

Blown 4-banger

Yeah, normal cast pistons usually contain 5-6% silicon, hyper eutectic piston usually contain ~8%, and forged usually have 10-12%. Just the fact that cast pistons are molten aluminum poured into a mold, and forged is an aluminum cylinder that gets basically smashed into shape, makes me lean towards forged

Also, yeah. Ford usually uses forged pistons in their cars. Thats why the Cobra motors can make 800+ rwhp on stock internals

06blackg85ss

iTrader: (1)

Hyper-you-break-it... that's what it really stands for lol

nghisus

There's the eutectic line on the metal's phase diagram and depending on whether you cool it above that line makes it "hyper" and also the composition is a dictating factor as well (carbon, silicon content, etc.)

The forged pistons and rods in the Terminator Cobras you mention are actually Manley rods and pistons I believe. They DO NOT use the same pistons in the regular Mustangs. I believe the use it in their forced induction engines such as the Lightning (which I have) and the GT.


I don't know about you but the first time I heard "Hypereurtectic piston" I was reading an issue of MM&FF.

Blown 4-banger

I almost gave you props on that one, but it was more cheezy than something my dad would say. I can not give you kudos on that one

Don't forget the forged crank too

06blackg85ss

iTrader: (1)

lol I'm old, whatdaya expect. but seriously, thats what I"ve called em for years

nghisus

Most definitely I almost went for a Terminator but on the test drive I thought working the clutch was like being on a leg press.

Area47

03 cobra's had h-beam rods and forged pistons.

our pistons, are over 12%

ford has used them a lot

Blown 4-banger

Meh, stock stuff will never satisfy me. I'd rather have all custom cryo frozen internals instead

Area47

im doin just fine on stock stuff


the engine does sound like a pissed off buzz saw at 7700

Blown 4-banger

Wonder what mine will sound like at 8200???

Area47

even louder?

Blown 4-banger

I'd say thats an accurate estimate...

Psykostevo

Jesus man, are you trying to create Nuclear Fission in your LSJ?

Area47

nope, just waffles.