I have a set of eagles headed my way in the mail. I will soon be sticking them in an old usdm ej20 shortblock and I had planned to purchase a set of JE pistons to go along with my build. Then I read a post talking about an engine letting go because JE pistons are crap. Is this true? Would Aries be a better choice? Money is an issue, but If I have to I would rather spend a few more dollars to save in the long run. :devil:

I would be more concerned about there being several posts about JE pistons being crap.

crawford makes good pistons... and blocks

eagle, je and cp are all junk IMHO.....mahle and oliver are the way to go but heck what do those mahle guys know.....they've only been doing it for over 82 years. Oliver of course would just be your rods but i'm sure you already knew that. I just like to make sure for people just in case

We have a forum for this and now that it's been moved, you MIGHT want to gander at the Piston FAQ I spent like 30 hours researching. ;)

I think there needs to be a sticky with all your FAQs listed. They are most helpful.

Mahle FTW. I just got a set of these and they will be in the block within the next week or so. I cant wait!

wiseco are pretty awesome -- they have kits ready to go... hold up too

I'm going Wiseco.

seen alot of motors with the wiseco have problems. they are just breaking into the import scene as well as automotive.that scares me a bit . i need them to be around for awhile. i am using cp pistons :) in my 2.5l

-1 for cp pistons
:(

I think it depends on the installation and tuning. You can use the best of the best parts and if they are installed wrong or you are running a bad tune, or have a bad tank of gas .... your engine could fail.

+1 Mahle ...

ok then... Wiesco or CP? Pros/cons?

http://www.crawfordperformance.com/forum/viewtopic.php?p=15637#15637

Wiseco uses their own 2000Ton press to forge their pistons, I recently blew a block that had my Wiseco's in it, needless to say the Pistons were more salvageable than the rest of the block. 1 rod came off the crankshaft, bent and cracked another rod, other rods were bent. Pistons look alright up top other than them bending a few valves, although the rods did take a chunk or two out of the back of them.

If you get forged pistons, then the pistons are the least of your worries.

We favor the Wiseco and carry custom spec versions for Subaru motors.

-Geoff

I run wiseco's and love them. The shop I get my car worked on uses nothing but them. They have a 650+ whp wrx drag car. Nuff said

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
if i couldn't get the mahle then...
i would def. pic wiseco over the je, cp, or eagles

Many Suby engines have successfully used CP pistons for thousands of very hard miles.

seen alot of motors with the wiseco have problems. they are just breaking into the import scene as well as automotive.that scares me a bit . i need them to be around for awhile. i am using cp pistons :) in my 2.5l
Your kidding right?

Most of the high HP Hondas run Wisecos, although the newer fad tends to be CPs. Wisecos have been making import pistons for quite awhile.

I just pm'd you. Let me know if you get a chance to read it.

yeah i think cp has been making them for a while but it's hard to compete with over 82 years experience of the mahle

After upgrading pistons, consider doing rods too, because your pistons will be able to take a beating that will leave them in fine shape, but will bend/crack/disconnect your rods, trust me, I did only pistons and my rods went, now I'm doing it all w/ 100mm pistons forged with wisecos, eagle rods, balanced crank, etc.

manley rods are good, just put a set with some coated weisco's in my friends 4g63

with some further research and seeing some other cars run and last as long as they have I'm going to have to give...
+cp as well

Only 300 miles on Mahles so far. But so far so good. 99.5mm in a gently re-honed USDM STi block. The ring gap was dead on out of the box. (.014 top, .016 middle all the way around)

Nice kit except I'd get a set of Subaru circlips instead of using the Mahle ones. The Mahle clips look difficult to install/remove. The sube clips are in the master gasket set.

Oh, Mahles comes with stickers! +5 hp :banana:

^
:lol:

The Mahle's can run a tighter tolerance as compared to CP and others... That is definitely something good for people looking to "not" run N2O, crazy boost, or wants the car to be a daily driver.

Mahles are coated, come with rings and wrist pins, and are overall the cheapest.

I've heard 1 set of Mahles in a subie, and honestly it sounded rather stock to me.

I have my qualms with CP's (NOT Crawford, but CP the piston manufacturer) products and quality control... but I will keep that to myself...

For off the shelf pistons Wisecos are my second choice...

If Mahle made a piston to be used with a longer rod, I'd be very happy. I really like the longer rod ratio. Really helps the engine rev like an animal.

Your kidding right?

Most of the high HP Hondas run Wisecos, although the newer fad tends to be CPs. Wisecos have been making import pistons for quite awhile.


i am talking in subies. i have seen five with issues,and one that has yet to be started. as far as Wiseco making pistons for import cars for a long time they are the new kids on the block when looking at all the piston makers :) i will post my results with my cp's after my car is done :)

^^^^^^^^^^^^^^
i'm looking forward to the results

I have used wiseco, arias, cp, mahle, and je in subaru engines and they were all fine.

Correct assembly and machining can do wonders.

Overall I prefer JE, they have a good understanding of pistons when it comes to High boost.

je pistons and gadiel tuning on a ej 20 w oem rods 430whp dayly driver , no issues and extremely abused

ROSS, CP, or Cosworth.

:)

I have a set of eagles headed my way in the mail. I will soon be sticking them in an old usdm ej20 shortblock and I had planned to purchase a set of JE pistons to go along with my build. Then I read a post talking about an engine letting go because JE pistons are crap. Is this true? Would Aries be a better choice? Money is an issue, but If I have to I would rather spend a few more dollars to save in the long run. :devil:

stick with what works and people are using.. im building a motor and ive been payin attention to this stuff for the 4 years ive had my car for. JE's are the worst. cobb pistons are custom JE's that they re-work. they had to do that to deal with clearance and slap issues. TRP uses Arias pistons but they probably are not off the shelf pieces. I suppose you could contact a dealer and get the TRP spec ones. Personally, i'm using CP pistons for my build. Buy them from axis ron is a very knowledgeable guy has built a lot of motors and unlike quirt crawford obviously checks his tolerances.

That's funny that cobb pistons are custom JE's that they re-work, because JE's are Wisecos that are re-worked. LOL. Reason I like wiseco is because all their pistons are forged with their own 2-ton press, not re-cut to other designs etc.

in the 2ngt/neon world, wiseco is synonomous with crap.. ive seen some pretty ****ed up cyl bores from wristpins that worked their way loose from a poorly made piston (DR1665s car mainly), and generally i wouldnt trust em
even though ive heard for all other makes they sell a top notch piston, i could just never go with em

That's funny that cobb pistons are custom JE's that they re-work, because JE's are Wisecos that are re-worked. LOL.
Umm, no. JE manufactures their own pistons. AFAIK, they have their own forging process.

seen alot of motors with the wiseco have problems. they are just breaking into the import scene as well as automotive.that scares me a bit . i need them to be around for awhile. i am using cp pistons :) in my 2.5l

and your complaining about wiseco? cp was founded by people who used to work for je hence their racing pistons are hard to tell one from the other

If Mahle made a piston to be used with a longer rod, I'd be very happy. I really like the longer rod ratio. Really helps the engine rev like an animal.

This could be done, but I believe the minimum run is 6 sets (so you'd need to find 5 other interested people).

and your complaining about wiseco? cp was founded by people who used to work for je hence their racing pistons are hard to tell one from the other


jesus i am not complaining. i am just stating what i saw with my own eyes when they were used in cars!!!! people from je worked at burger king to . you buy wiseco i will buy cp which has been used in several high hp subarus and several other cars.

I was just saying cp is also a new company since thats what you seem to judge manufacturers by. CP's are great I even have a tee-shirt.

I was just saying cp is also a new company since thats what you seem to judge manufacturers by. CP's are great I even have a tee-shirt.


sorry dude i thought you were jumping me. either way car is done very little slap . when warm all gone :D