done12many2

iTrader: (33)

Wiseco uses 2816 forging which is great for big boost, nitrous or rowdy high compression. Because the 2816 expands and contracts a bit more than 4032, you have to run more clearance. Some say that because of the additional clearance needed over 4032 that it is less practical for street use, however Wiseco actually recommends their 2816 pistons for street use. Besides, the clearances are still tighter than OEM pistons. They also make 4032 pistons but say that 2816 is less brittle when compared to 4032.

Not enough people have used Wiseco pistons in the VQ35 to assume that they are in any way inferior.

Zivman

iTrader: (19)

I am not saying they are inferior in the VQ, but based on personal experience and reputation, others may be a better choice

mraturbo

iTrader: (1)

If they are forged and lower compression, they are probably all pretty close to the same quality. Just make sure they are notched properly to clear the piston/oil squirters. The early versions of Arias and CP had problems and we used to custom notch them for proper clearance AFTER losing a motor to sqirter debris.

NOTE: We have used both Arias and CP and they create very similar results. It is the compression ratios that make a difference IMO.

Good luck.

M

tecni

iTrader: (28)

Wiseco is what Titan Motorsports runs on their 8 second supra. I think its more than enough.

350zDCalb

iTrader: (21)

The arias extreme duty piston is in a different class than ALL of the other forged pistons out on the market...
are they overkill...totally...but I have them in y engine and plan to use them in virtually EVERY setup that we build...
The top and middle ringlands are extremely beefy, how a turbo piston should be...they are made of zero silicone forged aluminum, these increase the strength tremendously...the theorized downside of these pistons was that because of their increased expansion properties, and the need to run larger piston to wall clearances, that the motor would be noisy with piston slap..NOT THE CASE...I am running 6 thousands xclearance in my motor, 2 more thousands than what is required..and the motor sounds identicle to the previous setup that I had, with the standard arias pistons...no noticeable audible difference..SO NO DOWNSIDE...just extra insurance, IMHO

I'm sure many of the other pistons are similar to one another, nothing touches the extreme duty piston!

Zivman

iTrader: (19)

From the experience I have, if you go through a motor, maybe once every 6 months, 12 months, 18 months, you run Wiseco pistons. They will help you cut down on parts costs. From what I have seen, you pull a set of Wisecos out of a motor, and compare them to say Arias or CP, and the Wisecos look worse for wear. Did they fail, no.

tecni

iTrader: (28)

well, maybe so... I hope you're wrong but that's all I have to work with right now.

mraturbo

iTrader: (1)

You should be fine.

FYI, Most of the built motor failures we have seen have been detonation and rod bearing related. And not Piston related.

M

Sharif@Forged

iTrader: (92)

I was with you up till this point. OEM pistons run much tighter piston to wall clearances becuase they use a cast material, that has minimal thermal expansion. Factory clearance on Nissan OEM pistons is .001 or less...vs. .002-.005 for most forged aftermarket pistons.

Our experience has also shown, that 2618, or zero-silicon aluminum is still exceptionally quiet...no piston slap. I personally can't tell the audible difference between VQ35's running 2618 vs. 4032 alloys.

Good luck with the build-up!

done12many2

iTrader: (33)

Thanks bro,

I must have been sitting on my head when I said that.


Tecni,
I don't think you need to worry about breaking down your motor every 6,12, or 18 months because you chose 2816 Wiseco pistons. I think that Sharif would have chimed it with a big fat don't do it if that were the case. I chose my pistons based on the research I did for my set up. It had nothing to do with the fact that they saved me a few bucks.

Sharif@Forged

iTrader: (92)

You'll be fine. I'd rather you chose the parts that your engine builder is most comfortable with. It's all good!

HoldThisForMe

iTrader: (4)

OK heres a CURVE BALL....

What about HYPEREUTECTIC pistons??? with like a T6 heat treatmeant...

It's my understanding that the rings will go first and is the weak link in a piston. Turbo pistons usually have thicker ring lands. Forged pistons will only allow maybe a second or two before you punch a hole in them when you detonate.

As for the Arias EDs I wouldnt think they are overkill...just very smart in design...with thicker rings...

Do all the other forged pistons have thicker rings also?

Sharif@Forged

iTrader: (92)

The rings are protected by the ring lands. The ring land need the most protection. Racing pistons actually use thinner compression rings, not thicker, as thinner rings have less friction losses.

tecni

iTrader: (28)

I agree and would actually say the stock pistons fit slightly more snug in the cylinder than the wiseco.

Sharif@Forged

iTrader: (92)

Definately. A cast alloy factory piston uses a high silicon content AL. They barely expand at all...hence the sub .001 clearances. But they are also more fragile.