2AZFE? Options

[uberschall]

primarily for conversation...

seeing as the 2AZFE has assumed the role of replacement for the 5SFE, and it is similar in application and displacement....how feasible/worthwhile is a swap in your opinion?

i got to thinking about it because it is a much better 6-speed option than the peaky, fragile 2ZZ.

based on a quick browse on ebay, the highest price i found for the motor itself was $1700.

and for pete's sake, don't be obnoxious.

[Bitter]

i thought i read somewhere that the 2azfe came with forged steel rods?

[Kwanza26]

i thought i read somewhere that the 2azfe came with forged steel rods?

Hehe... everything is technically "forged"... which is just a process of heating metal... but 'forged' as in not molded/cast from a master mold... no they aren't. You can tell by tool marks. Cast parts always have tool marks while 'forged' parts do not.

[Bitter]

i thought i read somewhere that the 2azfe came with forged steel rods?

Hehe... everything is technically "forged"... which is just a process of heating metal... but 'forged' as in not molded/cast from a master mold... no they aren't. You can tell by tool marks. Cast parts always have tool marks while 'forged' parts do not.

i think you have that backwards, a Forged piston is machined from a solid piece of metal, a cast one is cast to the rough shaped and then cut to specs. forged is stronger than cast because the structure of the metal is uniform throughout, theres not casting flow following edges of the pieces.

Forged

and i did mispeak, its the 2RZ-FE with the forged steel rods. R and A look kind of similar sometimes and things got confused.

This post has been edited by Bitter: Nov 10, 2006 - 11:44 AM

[Kwanza26]

Hehe... everything is technically "forged"... which is just a process of heating metal... but 'forged' as in not molded/cast from a master mold... no they aren't.

i think you have that backwards, a Forged piston is machined from a solid piece of metal, a cast one is cast to the rough shaped and then cut to specs. forged is stronger than cast because the structure of the metal is uniform throughout, theres not casting flow following edges of the pieces.

Forged

Refer to the bold word. To forge is to basically work hot metal (or even cold metal). When people say 'forged' internals, typically they refer to non-cast parts (forged by shaping)... however ALL engine parts undergo a forging process of heating and cooling to reduce brittleness and/or plasticity of a metal. All I'm saying is... 90% of stock internals are cast in mass... and are not shaped by a forging process... however they do undergo a heating/cooling process (also called forging) to gain the desired brittleness/plasticity. Such is the nature of iron alloys. Cast metals are typically not as strong because of casting flaws and because casting requires metal to become molten, but is easy to mass produce. Like I said before... it's easy to tell which parts are cast parts and which are 'forged' parts by looking at tool marks. This is HIGHLY HIGHLY misunderstood amongst the tuner crowd. 4AGZE pistons are often reffered to as factory forged pistons, when they are actually cast pistons with a heat resistant ceramic coating. 4AGZE rods too, are often reffered to as 'forged'... when they are cast rods identical to all 4AG rods on the 42mm crank (minus the blacktop 20V).