2zz-ge head swap

navycamo · 10-16-2007, 11:31 PM

The head swap is another avenue I am looking into, has anyone ever attempted to do a 2zz-ge head swap onto our 1nz-fe engine? If it has been done what kind of gains are seen? Is it more affordable to do the head swap rather than forced induction, and are the power increases comparable? I realise that the 2zz-ge is a 1.8L where our 1nz-fe is a 1.3l bored to a 1.5L. I am really just looking for something that will give me pretty good gains, with the lightest attack on my wallet. I am very open to suggestions.

By the way, my perrin intake just came in today!! WOO HOO!!

Too bad Im underway right now, and wont be able to install it till I get back late next month...

The Mrs. said that she would install for me if I want her to.. I told her to take lots of pics and send them to me so I can put them up in the forum as a how-to sticky maybe. Well thanks in advance, I know you guys know your $hit when it comes to our xB's.

Rick

IowaSciontist · 10-17-2007, 07:35 AM

First thing you should do, is get the head gaskets for both motors and see if the stud holes, cylinder spacing, and all other important stuff matches up. No sense tearing apart a whole motor to find out the new head won't even fit the exhisting studs.

Then try to find schematics on the domes, to see if one is lower than the other. The shallower one will have the higher compression, which is what you would want for NA. Vice versa if you are going to do FI.

navycamo · 10-17-2007, 08:08 PM

thats a really good idea, I wouldnt have thought of using the head gaskets to see if it will work. Thanks

Rick

squirrel · 10-17-2007, 08:21 PM

The 1ZZ in my Matrix is definitely bigger than the 1NZ in my xB and xA. And the layout of the 2ZZ is definitely different than the 1ZZ.

IowaSciontist · 10-18-2007, 07:57 AM

Gaskets can be your friend. They also work good for patterning your own intake or exhaust flanges.

Starker44 · 10-18-2007, 08:53 AM

I am due to get my xB soon once I get back stateside, and one of the first things i want to do is see how big I can go on the engine and that head gasket trick will defenitly help thanks.

shurik89 · 09-11-2009, 07:46 PM

Hey, I'm thinking about swapping the 1.3L engine with a 1.8 2ZZ-GE from a matrix. Anyone have any ideas if the transmission with fit the 1.8? Or has anyone hear of this ever being done before?

Black_Box · 09-11-2009, 08:26 PM

1.3????? you mean 1.5???

shurik89 · 09-12-2009, 10:13 AM

Quote:

Originally Posted by Black_Box

1.3????? you mean 1.5???

ya sorry thats what i meant

PCH · 09-12-2009, 11:02 AM

Do you have a bB or a Scion?

RazoE · 09-12-2009, 12:43 PM

some bb's came with 1.3L engines and even AWD, NA xBs only came with 1.5's (well, 1st gens anyway)...

shurik89 · 09-15-2009, 08:57 PM

Ya i have a first gen scion Xb. I've done some research and have noticed that the transmission for the first gen matrix matches the Scion Xb transmission.

So, i'm thinking that the 2ZZ-GE may fit in the engine bay with a little work and the transmission match. All i want to know if this has ever been done before, anyone with any info on this please let me know.

bippu · 09-24-2009, 03:36 AM

the JDM bB came with either the 1.3 or the 1.5.

head swap maybe a bit tricky, better maybe if you just do an engine swap, say a 1.8 variant or if you can get hold of te 1.8 supercharged from a yaris, that would be sweet.

BriGuy · 09-25-2009, 07:57 AM

If you stick a head for a bigger engine on your little engine your going to open up the chamber and reduce compression. This will reduce your performance. Not to mention if there is a difference between bore sizes your going to create a situation where the dome of the head is larger than the cylinder. This can create hot spots where the chamber overlaps the cylinder and can lead to pre-ignition.

There's only a couple of ways you can get a head to perform better. Either open up the intake/exhaust ports to flow more air, put bigger valves in the cylinder to flow more air, or get the valves to come off of their seat a little more to flow more air. This will give you more top end and reduce your bottom end. Or figure a way to optimize the air/fuel mix going into the cylinder to increase power.

You can also shave a stock head down to give you more compression, this will help performance all over the power band. Unfortunately you then will have to run higher octane gasoline to keep from dealing with detonation.

All an engine is, is an air pump. The more air you can get that engine to pump in an efficient manner the more power you will make.

An engine swap for a slightly larger engine would definitely be interesting!

bippu · 09-25-2009, 08:05 AM

as with the bigger chamber, back then we address this by shaving off a bit from the head so the chamber will be smaller giving the engine a bit more compression.

BriGuy · 09-25-2009, 08:18 AM

Quote:

Originally Posted by bippu

as with the bigger chamber, back then we address this by shaving off a bit from the head so the chamber will be smaller giving the engine a bit more compression.

That works too, but then you reduce the quench in the chamber and that can affect detonation sensitivity too.

bippu · 09-25-2009, 08:22 AM

yes it will somehow, inwhich case change the injectors and do a port and polish, or get a bigger diameter intake manifold.

BriGuy · 09-25-2009, 08:25 AM

How will a port and polish or bigger diameter intake manifold help with increasing the quench of a cylinder head?

bippu · 09-25-2009, 08:30 AM

more air in and more air out. off course dont forget to up the injectors.

Wookie384 · 09-25-2009, 10:24 PM

The 2ZZ-GE head will not fit onto the 1NZ-FE block, same thing with the 1ZZ head. The 5 speed from the Matrix only fits the 1ZZ, and the 6 speed from the 2ZZ only fits the 2ZZ. If you want to add a 6 speed trans. to a 1NZ-FE that is possible but finding the correct transmission is really hard!