loonyrobert3

wat doeas a 1.5jzgte engine consist of?? i know its a mix between a 1jz and a 2jzgte.. anyone know any exact information on it.... basically wat internals!!

thanks to all
robert

wayne

iTrader: (27)

2jz block and 1jz head.

Charles B.

Are the 2JZ and 1JZ block really identical? I know the main difference is 3.0L vs. 2.5L. Is that just due to a difference in stroke? Or are the blocks completely different?

wayne

iTrader: (27)

As far as I know, just a difference in stroke.

loonyrobert3

so basically a 2jz would bolt up to a 1jz head? and wat internals i am not really engine inclined!?

gowest

Block is identical, the difference is the stroke and piston. 2JZ piston have special coating on the side to reduce friction. Both piston are same size. However 1JZ have bigger exhaust valve (1mm) and better flow head which good for big turbo set up.

Bean

iTrader: (1)

2jz block is physically bigger too in height
still fits tho

Lex Luthor

gowest....a 1JZ VVT-i in a '66 Stang? Verrry cool man...I had a '67 converted to a Shelby GT350.
Show us a pic of the motor.

got_trd

I've been wondering who owned that car...

gowest- That thing looks sweet man

heres a pic I saved of it a while ago

Aristo300

I haven't seen proof.. such as a flow test, got anything to back that up?

gowest

I show you some more stang with 2JZ . Not my car though. Hope you like it.

About the flow rate. I don't see any one have test stock 1jz and 2jz head b4 but I think that bigger exe. valve will allow more gas flow.

loonyrobert3

ok i love this stang also the info!!!!!! i might just doi a 1jz

London Bill

The 1.5JZ is typically an upgrade carried out on cars fitted with the 1JZ motor (like the JDM Soarer 2.5Ltr Twin Turbo). You install the 2JZ block complete with internals gaining 500cc over the 1JZ and a stronger bottom end. This allows you to utilise all the existing wiring/ancillaries that are fitted to the 1JZ.

The 1JZ head is reputed to be better flowing than the 2JZ but I have never seen any proof of this.

RjRacing

Does anyone have a full parts list though? Any members with a 1.5 swap?

Bean

iTrader: (1)

Update info:

Blocks are physically different in size pertaining to height... why?

The cranks are the same from the 1jz to 2jz, the pistons supposedly are too; the only difference is the rods; obviously the length
since the crankshaft is the same, to extend the stroke of a motor (without banging into the head), you have to increase the total block height...
1jz might be able to be stroked to a 3.0, but it would require a custom crank and rods... definitely NOT doable by just swapping in the 2jz internals... gotta swap the whole shortblock (timing belt included!)