1NZ / 2NZ Transmission Compatibility & Aftermarket 2NZ Rods - Toyota Yaris Forums

jtw11 · 07-30-2013, 09:48 AM

The C153 looks promising, given it's standard with an LSD as opposed to an open diff - at least that's what Wikipedia says, says it's from a Starlet GT Turbo with the 4EFTE engine...

I'm trying to find a picture of the stock pistons from the 1NZ and 2NZ to compare.

Correct me if I'm wrong, but the head and cams are identical between the 1 and 2 yes? So it follows that 1NZ pistons will work with custom rods.

CTScott · 07-30-2013, 03:49 PM

Quote:

Originally Posted by jtw11

The C153 looks promising, given it's standard with an LSD as opposed to an open diff - at least that's what Wikipedia says, says it's from a Starlet GT Turbo with the 4EFTE engine...

I'm trying to find a picture of the stock pistons from the 1NZ and 2NZ to compare.

Correct me if I'm wrong, but the head and cams are identical between the 1 and 2 yes? So it follows that 1NZ pistons will work with custom rods.

The piston, crankshaft and head part number are different for the 1 and 2 as well.

jtw11 · 09-03-2013, 10:55 AM

Thanks for the info - that dosen't surprise me re the piston and the crank, if the piston is lighter / heavier the crank will of course have to be balanced differently.

That does surprise me though regarding heads - does Toyota list a head as head + cams, valves etc - or just a bare head? My first presumption would be it's the same head, with different cams.

I've got a 2NZ-FE turning up at work hopefully tomorrow, which I'll be tearing down. The first thing I'll be looking for is which option we'll be looking at going down.

a) producing a rod set that allows use of forged 1NZ-FE pistons in a 2NZ-FE,
b) producing a piston set that allows use of forged 1NZ-FE rods in a 2NZ-FE.

07-30-2013, 09:48 AM	#1
jtw11 Drives: Smart Roadster Coupe Join Date: Jul 2013 Location: UK Posts: 8	The C153 looks promising, given it's standard with an LSD as opposed to an open diff - at least that's what Wikipedia says, says it's from a Starlet GT Turbo with the 4EFTE engine... I'm trying to find a picture of the stock pistons from the 1NZ and 2NZ to compare. Correct me if I'm wrong, but the head and cams are identical between the 1 and 2 yes? So it follows that 1NZ pistons will work with custom rods. Last edited by jtw11; 07-30-2013 at 10:25 AM.

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09-03-2013, 10:55 AM	#3
jtw11 Drives: Smart Roadster Coupe Join Date: Jul 2013 Location: UK Posts: 8	Thanks for the info - that dosen't surprise me re the piston and the crank, if the piston is lighter / heavier the crank will of course have to be balanced differently. That does surprise me though regarding heads - does Toyota list a head as head + cams, valves etc - or just a bare head? My first presumption would be it's the same head, with different cams. I've got a 2NZ-FE turning up at work hopefully tomorrow, which I'll be tearing down. The first thing I'll be looking for is which option we'll be looking at going down. a) producing a rod set that allows use of forged 1NZ-FE pistons in a 2NZ-FE, b) producing a piston set that allows use of forged 1NZ-FE rods in a 2NZ-FE.