The best piston material

[horsepower addiction]

We all know that 2618 is very strong in return for that strength has a lot of expansion so you have to run a lot of cylinder wall clearance 4032 on the other hand has very low expansion so you run a tight cylinder wall clearance it’s better for the street. What if I told you you could have both, the strength of 2618 and the clearance of 4032. that’s right and it’s been out for a while. Mahle m142 has the strength of 2618 and the expansion rate of 4032. so I can’t see why anyone would buy any other piston at this point.
by the way, M142 is what the new predator engine pistons are made of

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[EFI]

I think the regular Coyote pistons are also of a similar material which is why it's so strong and has very tight PTW tolerances.

The problem with M142P pistons is that they are proprietary to Mahle and they don't have a huge offering.

If every single manufacturer expanded their entire lineup to this type of piston, yeah it would definitely be the #1 seller. But right now it's very limited.

 

[Oakley]

i know you guys are talkin forged but I like hypereutectic pistons for anything not running boost or nitrous for this reason: they don't expand as much as forged stuff. That's why people should really be realistic about whether they intend to run boost or not cause going forged isn't what you wanna do if you don't have to.

there's a reason only specialty cars get fully forged bottom ends. i went with hypereutectic flat tops in my 97 cobra and that thing was an absolute RIOT with no boost. instant power, quiet motor, all the good things.

 

[horsepower addiction]

Mahle offers a good amount for the coyote and coyote variance. You can also order a custom piston from them anyway, you want it.
I heard something about the coyotes Pistons being a cast m142, but as far as the spec sheet for The Coyote it says it’s a hypereutectic piston

 

[EFI]

Mahle offers a good amount for the coyote and coyote variance.

Forged M142? I only really see 2618 or a few 4032.

Do you have a link?

 

[robvas]

Forged M142? I only really see 2618 or a few 4032.

Do you have a link?

page 64

https://www.researchgate.net/profil...e_Pistons+and+Engine+Testing_(Mahle_GmbH).pdf

 

[EFI]

page 64

I meant a link to the part numbers of any M142 forged pistons available for the Coyote.

But thanks for that info, very good read.

 

[horsepower addiction]

https://www.realstreetperformance.c...-5-0l-coyote-92-2mm-3-630-std-3-cc-11-21.html

 

[horsepower addiction]

They offer a good amount you just have to call. Or order a custom set

 

[horsepower addiction]

i know you guys are talkin forged but I like hypereutectic pistons for anything not running boost or nitrous for this reason: they don't expand as much as forged stuff. That's why people should really be realistic about whether they intend to run boost or not cause going forged isn't what you wanna do if you don't have to.

there's a reason only specialty cars get fully forged bottom ends. i went with hypereutectic flat tops in my 97 cobra and that thing was an absolute RIOT with no boost. instant power, quiet motor, all the good things.

Most people (not all) that have the engine built are planning on some sort of horsepower increase. Boost or happy gas.

What I would like to know is if someone uses hyper pistons but use a ceramic coating on the piston top could this make it handle boost

 

[EFI]

What I would like to know is if someone uses hyper pistons but use a ceramic coating on the piston top could this make it handle boost

Of course there are things that can be done to any piston (including hypereutectic) to make them handle boost better. One of the ways Ford did it is by adding oil cooling jets underneath. You can achieve the same thing with a ceramic coating on top to keep heat out of the crown.

There's other things to do, hard anondizing will help as would cryogenic treatment. Looser piston ring gap also is important as one of the biggest failure points on the stock pistons is blowing a ringland due to butting of the piston rings that happens when you heat them too much.

 

[Oakley]

Most people (not all) that have the engine built are planning on some sort of horsepower increase. Boost or happy gas.

What I would like to know is if someone uses hyper pistons but use a ceramic coating on the piston top could this make it handle boost

that won't get you much in terms of durability and introduces a risk of it flaking off and creating hot spots. ceramic coating is more for the skirts to assist with decreasing friction of the piston skirts inside the bore. it could get you something in terms of heat reduction which might help prevent detonation but the forged pistons really pay off what detonation actually happens, they're physically stronger.

if you know you'll run boost go forged but a LOT of people think they wanna go boosted and then after a built motor realize... the pay to play price is a lot and the risk just isn't worth it.

 

[horsepower addiction]

that won't get you much in terms of durability and introduces a risk of it flaking off and creating hot spots. ceramic coating is more for the skirts to assist with decreasing friction of the piston skirts inside the bore. it could get you something in terms of heat reduction which might help prevent detonation but the forged pistons really pay off what detonation actually happens, they're physically stronger.

if you know you'll run boost go forged but a LOT of people think they wanna go boosted and then after a built motor realize... the pay to play price is a lot and the risk just isn't worth it.

Ceramic is for the top to help keep heat out of the piston. on the skirt they use a dry lubricant not ceramic.

So if I can keep heat out of the piston with ceramic on top and loosen up the rings, and keep the Pistons squirters. it might be just as good as a forge piston

 

[horsepower addiction]

Of course there are things that can be done to any piston (including hypereutectic) to make them handle boost better. One of the ways Ford did it is by adding oil cooling jets underneath. You can achieve the same thing with a ceramic coating on top to keep heat out of the crown.

There's other things to do, hard anondizing will help as would cryogenic treatment. Looser piston ring gap also is important as one of the biggest failure points on the stock pistons is blowing a ringland due to butting of the piston rings that happens when you heat them too much.

As far as I have ever seen or heard of the piston rings (like you said) cause pretty much all piston failures.
I remember reading that the hyper pistons that Ford uses are just as good, if not better than SOME of the forged pistons on the market because they require such a high quality.

 

[horsepower addiction]

that won't get you much in terms of durability and introduces a risk of it flaking off and creating hot spots. ceramic coating is more for the skirts to assist with decreasing friction of the piston skirts inside the bore. it could get you something in terms of heat reduction which might help prevent detonation but the forged pistons really pay off what detonation actually happens, they're physically stronger.

if you know you'll run boost go forged but a LOT of people think they wanna go boosted and then after a built motor realize... the pay to play price is a lot and the risk just isn't worth it.

The record that I know of for a stock coyote is with a gen2 by AED in NorCal making 1300+ to the wheels. Of course this is a glory pull and not real life situation but it’s shows that the piston can take some serious cylinder pressure. I’m not sure strength is the issue

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