A little while back there was a thread concerning new pistons for FI...these pistons were made for the 2.4 solstice but im guessing they will work with ours?.....anyone have anymore info on these....prices, compression....etc.? maybe we could also get a pic up or something from the manufacturer to get some more interest on the site?.....

 

cmon now....i kno some of you saw this thread a while back...anyone know the guy who is making these psitons?

 

Yeah I saw it, I cant remember where though. I am just going for the Mahle ones which are 8.5.1

 

would the pistons out for the 2.0 work for the 2.4?.....i wouldnt think they would would they

 

Contact Karo @ Car Customs. He can have pistons made for you for whatever compression you want through Wiseco. (www.carcustoms.net)

There is no certain "right" compression for boost. Most people lower the compression for easier tuning abilities but even if you don't lower your compression, there is a way around it.

 

No for the simple fact that the 2 motors are 2 different bore. Your motor is 88 MM, the 2.0s is 86. This isn't also taking into consideration that they are 2 completely different stroked motors, so I don't know exactly if 9.5:1 compression would be 9.5:1 compression on your motor.

FYI: The 2.2 and 2.0 are the same bore.

 

NJHK 8.5.1 is a good compression for a turbo right? 20lbs of a sc61 to be specific.

 

Like I said, there really isn't a "good" compression. It's really preference. Most go 9.0:1, sometimes lower.

Also, I think stock SRT-4s run 8.5:1 compression.

BTW: when you lower your compression, you're relying on your turbocharger for power even more which is why people run even a higher PSI. The other benefit of changing the pistons is to get stronger pistons that can be more reliable and handle more power than your stock cast pistons (which is why people get forged).

 

ok well personally i myself would stick with somewhere in the neighborhood of the pistons we have now...which i believe are something like 10:1 or something like that?---simply for the (fact?) that boost acheived power levels can be reached through higher comp. pistons with lower boost or lower comp. levels with higher boost levels.....8.5:1 or 9:1 would prob be good......NJHK---what would you reccomend personally.....and also what would a set or pistons/rods cost...any ideas?

 

Well, I had planned on finishing my motor before I sold it but my plans were:

Cometic MLS Headgasket
ARP Studs
Wiseco 8.9:1 Pistons (Karo @ Car Customs has them on his site)
Eagle Rods

I was probably gonna buy them from CC except for the headgasket & studs, I would have gotten it from Ryne @ TVR.

On Car Customs the Eagle Rods are $350 & Wiseco Pistons are $475.

So to answer your question, I was going to lower the compression just for the ease of tuning and cause I'd rather rely on my turbocharger for plenty of power (which I could handle spinning fine cause I had a rebuilt valvetrain).

That's my story and I'm sticking to it

 

By the way, I did a quick search, I couldn't find anything for the 2.4L as far as pistons and I went on Eagles site for the rods and didn't see your cars motor on their product list but that doesn't necessarily mean that it's not available.

 

One other thing, your stock compression is 10.5:1

 

The lower compression (8.5:1) should only be done if you plan to boost above 18 Psi or if you are worried that the climate that you live in could cause dificulty with heatsoaking. Detonation Threasholds are greatly reduced when running WOT.

The Low End lost with the compression ratio will not be noticed

 

True

 

I'll probably go with the Mahle 8.5:1 pistons when I go turbo this winter...
with the gm ported head, cometic gasket and eagle head studs with the 8.5:1 pistons I should be running about 24 psi of boost and see some decent numbers..
just need to order cams and valve spring and retainers and I"m almost ready to go

 

Check out comp cams "turbo" cams.

What size turbocharger?

 

haven't decided on it yet... looking at a few options... but I'll probably start with something small... like a t3/t4 super 60 or a 20g or something of that nature... just to see how the motor responds. I do have a t76 from my mustang... but that is just waaaaay too big for a 4 banger... so I"m selling that to buy a few smaller ones

 

Just pick wisely and remember that the turbo you buy effects the manifold you get and what type of manifold (example: you're going externally wastegated and you want a extension off the manifold).

 

Yeah I'm trying to not go that big and still try to reach 400 whp... that'll be good enough for a daily driver.... I got a few people that make turbo manifolds around by me so they're gonna hook me up to test so its not that big of a deal... I"ll probably go the external waste gate route though

 

cool, good luck.

 

Has anyone been interested in Wiseco's? They usually make custom pistons. Might as well spend the extra couple hundred to have the exact pistons your looking for.

 

I agree

 

I agree their pistons are great I've used them in everything from my turbo mustang to my quad.

 

I talked to JE Pistons a few months ago about pistons. They told me that they were making pistons for the LE5 and that they'd be offering them through Hahn, exclusively. They wouldn't give me any details, instead they told me to talk to Hahn.

 

Call Wiseco..give them some specs to work with, including the duty expected from the pistons (drag, auto-x, how much boost, power goals, etc.)..they can probably help you. Their pistons usually come coated on the skirts and you can get an additional ceramic top coat as well for like +$100 or somethin. Other than CP, Wiseco's are the only ones that are accurate to +/- 1 gram and .0001 diameter I believe. Plus I've also heard on more than one occasion that Wiseco's will make more power given the same setup as CP's, JE's, SRP's, ROSS, and Arias. They're lighter, thicker crown's, and have better compression than most-->which means you'll make more power given the same boost/compression.