JE or Manley pistons

[95SC]

I'm building a 4.6 Dohc engine for boost application 600-700 rwhp .I have a chance to buy a barley used JE or Manley forged pistons for around $400.My brother is running manley pistons so I know that they work great so far on his car but I don't have any experience with JE pistons.Which pistons would you guys recommend?

JE part # 257543 JE pistons

Manley part #4-5941208 Manley pistons

Thanks.

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[VenomInside]

personally i like the manley pistons better. But i dont think you can go wrong with either.

Ask hank or LDC. They would know more.

 

[Bullitt-1469-]

ive used both i think that its really up to you at that power level, also make sure you buy new rings and refile fit them to your block if you are using the used pistons

 

[Bigturbonotch]

any name brand forged piston will do the job for that power level :biggthump

 

[Zack]

If you want your car to sound like a diesel, then go with the JE's.
For the quietest piston with a killer reputation, go with a diamond.

 

[Bullitt-1469-]

If you want your car to sound like a diesel, then go with the JE's.
For the quietest piston with a killer reputation, go with a diamond.

What evidance do you have for that statement?

 

[Zack]

What evidance do you have for that statement?

I have spoken with just about everyone in the business, as well as heard and driven a JE piston car. They are just plain noisy.
The most recent Manley pistons from MMR are set to run a .003 wall clearance, as well as the Diamonds, which equate to no noise.
Ive yet to find a JE owner who does not have the piston slap sound when the car is cold, or even when its hot in some cases.
Ive had CP pistons in my Marauder, them went to a Diamond and was the most satisfied with the diamond.

 

[Bullitt-1469-]

Ive used JE in my first car that was 500hp but that was a gsx, i had no issues at all with them maybe the JE's for mustangs are different. Seems weird to have a issue with one car and none with another

 

[95SC]

My brother had little piston slap with his manley pistons when the car was cold for about first 200 miles but it's pretty quiet now.I don't really care if I'll have a little piston slap when the car it's cold as long as they'll work with no problems.It won't be my DD car ,so piston slap don't bother me.