GZE Rod = GTE Rod??? (Pistons Different)

[stradlater]

So after being told that the GZE bottom end is different and the rod end is smaller and can use better bearings, I decided to buy a GZE and pull it apart to get the rods.

So I did this. Only to find.

The rods in the GZE are the same as the rods in the 2 GTE's I have.

The Cranks are also the same. Same counter weights, same journals ends, etc....

The only bit that was different was the piston crown. The GZE clearly has a lower compression piston...

So, can anybody answer me this, have I bought the wrong engine? Or have I missed the point somewhere and I have measured the wrong bit?? What am I missing here???

Here are the photos.

Whole Gallery



GZE Crank on the left... (One without the spigot bearing...)



GZE piston and rod pair is the one with the clean piston.



GZE rod is the bottom one..



GZE piston is the clean one..



GZE pistons all lined up.



WTF is with this water pump pulley????

[Poggy]

.........................

[fixeruperer]

yeh dint look like gze stuff to me.
both 6 bolt cranks

[4agte]

i think the are 1ggze compared to 1ggte hence the reason there are six pistons all lined up in that picture

[fixeruperer]

hehe i gota think outside that 4a square

[Poggy]

hehe i gota think outside that 4a square

Sorry my bad, i'm so used to it LOL!!

[love ke70]

strad, did you measure the big end?
its only a 2mm difference, wack some verniers on the big end and double check...
fwiw, the early GTE (like mine ) has the happy 42mm big ends

and the water pump pulley might be like that to take a s/c belt or something?

[stradlater]

I have measured all the big ends, and they all seem to be the 45mm type, so I'm fucked if I know what the hell is going on....

[love ke70]

you love men in the pants?

[stradlater]

You make intelligent recommendations.. Please go on...

[love ke70]

hmm, i was gonna leave it there

maybe 6boost has been telling lies and he's the one that loves men in the pants?

so you measured the big ends on the crank obviously? not on the conrod.. dont think it would make that much difference...
only thing i can put it down to is age of the motor, maybe its a very new gze and had the revised bottom end...maybe...
dunno really....

[stradlater]

I shall ask him directly, as I don't want any conjecture based on something that I've no facts or proof around other than what I've listed above...

[thechuckster]

i thought the crank bearings were the same size, but the rod length was different?

[TheToyman75]

I was expecting you to find a minor rod length difference as well but can't comment more than that.

I haven't looked in the bottom ends of the 1G engines yet. BUT I know there was 2 series of 1G-GZE ( 1 AFM & 1 MAP sensored) I also know there are 2 series of 1G-GTE bottom ends (with a difference in bearing sizes) it makes sence that the difference in bearing sizes is an age thing more than a GZE verses GTE thing. I would hazard a guess that your engine are all the Same "Gen" if you get my meaning.

[stradlater]

Hrm, makes more sense, yes....

[oldcorollas]

does the pin height vary between the GZ and GT?
does the deck height differ?

[stradlater]

The pin height doesn't, and I don't think the deck height does either, though I didn't measure it.

The heads are the same.

[6BOOST]

I will say again as I did in the other thread, all rods are the same length, all pistons are the same diam, all pistons have the same pin height, you can interchange any piston from na to turbo with no difference in compression height. You can also interchange early turbo rods/crank and supercharged rods/crank.

There are 2 journal diam. The fully counterweighted turbo crank has a 44mm journal on the crank. The ZE engine has a 42mm journal on the crank. There is NO 45mm journal. If you are measuring the rods, then same for the big end with bearing fitted, and if you take teh bearings out, you will have a 44mm big end or 46mm big end bore in teh rod itself.

Get some measurements, or exact more accurate measurements, and either pm me or post them up and we'll work it out. MAybe the turbo engines you have are early ones and you could have just used those rods and got a counterweighted crank, either way, I'd love a few spare sets of ZE rods, so you won't be left with bits you don't need

Kyle.

[stradlater]

Does the crank in the pic look like the counterweighted one?

[6BOOST]

No, those 2 cranks are def early non counterweighted cranks. Thats prob a good thing, not a bad thing, finding a crank seems to be the easy part, getting the smaller rods seems to be harder. But.... at this stage it looks like you may even have 3 sets of them