Devils Mentor

iTrader: (20)

Looks like I will be changing my setup around and will need to get new pistons.

I will be needing a 4.165 slug and I was thinking of going with a 4032 piston for its light weight and durability, but I might be running a little 200 shot on the setup so I'm not sure if it is a good idea.

And as for the brand, who would you suggest: Cosworth, Omega, Arias, Diamond, Ross, etc.

IIRC JE, Wiseco are from the same manufacture Dover and CP is a Mahle make... right?


DM

COPO9560

If nitrous is in your future, I woulld lean toward 2618 as it is more forgiving of an alloy. Figuring your 450 CID engine is probably not a daily driver, I'm not sure what advantage 4032 would have for this application. My guess is you will not stop at a 200 shot - better build for more just in case.

racer7088

You could use either for a 200 shot if it's always tuned nice but 99% of piston companies would rather use 2618 as its better in every way almost besides super long duration wear.

Devils Mentor

iTrader: (20)

This will be a DD for the most part, that's why I was thinking that the 4032 would be a better choice.

What about piston choice: Cosworth, Arias, Omega, Wiseco, etc?

DM

racer7088

Wiseco and Diamond are best for LS stuff as far as skirts and valve reliefs but they all make good pistons. Depending on what you want it will 90% be a custom if you want 4032 alloy.

AES Racing

iTrader: (6)

4032 advantage to them, weight, run tighter wall clearance.
I would not recommend 4032 for a power adder, seen plenty of them shatter like glass. Infact main component to 4032 aluminum is silicone (glass).

2618 piston will take some detonation and still run fine.

Some pro stock teams have tried 4032, but any front runner uses 2618.

Heres a timeline

Pankl Racing Systems forms CP-Pistons 1998
Fred Carrillo retired in 2001, sold his company to Dover
Carrillo/Dover bought K1 2007
Pankl Racing Systems aquires Carrillo from Dover 2008 (now called CP-Carrillo)

Pankl is a OEM supplier, they make the LS9 rods for GM.

Devils Mentor

iTrader: (20)

I just worry about power loss with street use on the 2618's. I read that you can start to lose power within 5K-7K miles. Does the resistant coating for the skirts really help when it comes to wear?

DM

racer7088

We have some customers on this website with engines 7 years old that just dyno'd MORE than they did 7 years ago at the wheels and they have 2618 pistons.

Losing power in 5-7K Miles! Whoever said that is also pobably someone interested in selling some 4032 pistons I would imagine. I sell them as well and they are harder and wear longer overall but the difference is not anything crazy.

I have seen some of the Wiseco 2618 stuff at 60K miles and it doesn't look bad at all. Same with Diamonds and some JEs we have run. I have 155K on some 2618 Manleys in my Mustang and I still had no problems with 6 straight years of autocrossing and open track use.

Now 200K use the 4032 is probably going to show less ring land wear for sure but it will also break in any of the more radical stuff that is usually done around this site.

I have seen tons of cracked Mahle powerpak 4032 pistons as well as the SRP 4032 and Pro-Tru 4032 stuff. and that's even on NA stuff with a lil detonation from bad gas or tuning. With power adders it can get ugly.

In short I would say don't worry too much about having your performance go away from a 2618 piston when 100 other things will crap out first like valvetrain etc.

racer7088

DM,

I do have some lower power level stuff where I have run some nice 4032 stuff (JE's SRP) though and they did look and run awesome after being torn down much much later in life. The harder silicon alloy does wear longer but again it's also more crack prone so that's the rub. Just don't run 4032 on anything crazy at all and you will be fine. There's a reason none of the piston makers make their best stuff in 4032 for the most part.

Devils Mentor

iTrader: (20)

Awesome, thanks Erik! Now only if you were in Florida so you could build my motor

You know... You are one of THE most respected builders and out of all the shops I talked to on here and here in Florida, you have given me the best price out of them all, only problem is the shipping would kill me, lol... ehhh...


DM

racer7088

No problem but don't worry too much about the pistons as the 2618 stuff is great and won't cause you issues on any normal engine.

Devils Mentor

iTrader: (20)

Yeah I really wanted you to build my engine, hell I though about just driving the parts over to ya, but with school and stuff and not to mention the 2200 miles round trip TIMES 2.... there's just no way

Well thanks for the conversation and help Bro, I appreciate it Erik!

DM