FA20 OEM pistons, are they Forged or Cast ?

[ttknf]

Quite a few modern cars come with forged pistons; the GT-R being one of them. It wouldn't be a terrible surprise if the FA20 came with forged pistons, but only if the overall price of the car was higher.

[Bristecom]

The Evo X has forged Mahle pistons. Yum. But I'm pretty sure these are just cast. However, I know I saw somewhere that the rods and crank are forged steel...

[powertrip]

OEM cars with forged pistons are generally forced induction from the factory. It's more common to see forged con rods & crank on an N/A car than forged pistons.

[Bahraini86]

I just wish Toyota surprises us with this engine, and we discover that it holds boooost!

[Sport-Tech]

Senior Scion rep here when asked said that a S/C would not be a simple bolt-on, because of the high compression ratio the pistons would have to be changed. Sounds like mucho $. He did say Toyota has plans though.

[carbonBLUE]

Originally Posted by Scion FR-S

Senior Scion rep here when asked said that a S/C would not be a simple bolt-on, because of the high compression ratio the pistons would have to be changed. Sounds like mucho $. He did say Toyota has plans though.

Not enirtly true, most trd superchargers run low boost, 5-6 psi is expected, 250 hp...

[djdnz]

Originally Posted by Exage

Perhaps the question would be better suited on the con-rods and crank...

Tip: Better to beef up the bottom then waste time at the top. More likely to throw a con-rod out the side of the block then melt a hole through the piston (unless you do something really stupid with the fuel).

But if you have weak ringlands on the piston it's another story.

[Sport-Tech]

Originally Posted by carbonBLUE

Not enirtly true, most trd superchargers run low boost, 5-6 psi is expected, 250 hp...

Interesting. If it's a dealer install, I assume it will not void our warranty?

Of course depending on where the added 50 or lbs go adding a S/C may require re-optimization of springs/shocks, so that would get expensive too.

[Pplater]

http://www.ft86club.com/forums/showthread.php?t=6840

im pretty sure they are cast, they look cast in this picture

[catharsis]

most likely cast, the car is the too cheap for it to have forged.

[Matador]

Probably cast, however most if not all modern Toyota 4's (yes yes, I know, Subaru, blah blah blah) come with forged cranks. I don't expect this to be any different.

[2fast4you]

Originally Posted by Scion FR-S

Interesting. If it's a dealer install, I assume it will not void our warranty?

Nothing voids a warranty, however, the dealer may elect not to perform a warranty repair based on perceived abuse and/or modification.

Whether a supercharger carries a warranty depends on a few factors: if it only requires a re-flash of the stock ECU, doesn't use an external intercooler, doesn't require modification/replacement of stock exhaust manifold, and passes California Air Resources Board (CARB) certification, it will be included in the powertrain warranty. If it doesn't, it'll be a "race-only" part for off-highway use only and not carry a warranty no matter where it is installed.

However, if they say it won't be a simple bolt-on, they might as well release it as a separate model.

[chulooz]

Originally Posted by Scion FR-S

Interesting. If it's a dealer install, I assume it will not void our warranty?

Of course depending on where the added 50 or lbs go adding a S/C may require re-optimization of springs/shocks, so that would get expensive too.

C'mon. This kinda talk is getting silly.

[Ishii Motors]

Just Aluminum Alloy cast.
Side skirts have a resin coating.
The Top ring groove has a alumite coating.


The crankshaft is forged steel

Ishii