bigport crank in a gze

[AE101LEV]

my gze crank is stuffed and i would like to know if a bigport crank is the same crank? was told 4age cranks are the same

ta

[beige_bandit]

nope! bigport crank has 40mm bigend journals, 4agze crank has 42mm journals

[takai]

4AGZE and 4AGE cranks are the same for the specific model engine. I.e. a 3rib GE crank with 40mm journals will fit a 3rib GZE also with 40mm journals.
Same for a 42mm journaled crank and engine.
You cant fit a 40mm crank to a 42mm journal without major effort, and vice versa.

Your bigport crank is most likely a 40mm journal crank.

nope! bigport crank has 40mm bigend journals, 4agze crank has 42mm journals

Not all of them, i have an AW11 GZE in my garage back in Canberra which has a 40mm journal.

[beige_bandit]

3rib gze?

Is this aw11 a jap aw11 or a aussie aw11?

[takai]

Its only the engine out of one. Bigport, dizzy, side exit intercooler pipework. All points to AW11. No idea if its a Jap or Aus, but its certainly a 3 rib 40mm journal.

[beige_bandit]

so its a N/A bluetop bigport thats someone has put a supercharger on!
I'm sure there is no such thing as a 3rib 4agze block, and im sure no gze had 40mm bigend journals

[takai]

Whatever it is it came with all the stock mounts for everything, and the flat 8.1:1 pistons... with 18mm gudgeon pins, and i thought that GZEs didnt come with 18mm gudgeons either. That and it looked perfectly stock, only issue was a blown HG (and bigend as i found out later).

I was originally going to put it in my AE92 and then i found a full AE92 Trueno GTZ halfcut, so this anomaly has been sitting in my parents garage for the last 3 years (along with another 3 4As).

[beige_bandit]

there is no standard gze piston that takes a 18mm pin, all 20mm! and the standard comp ratio of the very fisrt gze was 8.0:1 so i think you,ve got a bitza,

But never mind all this, so your folks live in canberra? and you say this engine along with another 3 4a's are floating about hey? we may have to do some business!

What are the other 4a's(carby's?) PM me some details please

[takai]

All 4AGEs and are my spare parts stash, you aint getting your hands on any of them

[beige_bandit]

You corn hole kissing bastard

[myne]

I have a bluetop bigport 7rib 42mm journal 18mm gudgeon 8bolt flywheel engine.

It's a true factory wtf

[oldcorollas]

there is no standard gze piston that takes a 18mm pin, all 20mm! and the standard comp ratio of the very fisrt gze was 8.0:1 so i think you,ve got a bitza,

But never mind all this, so your folks live in canberra? and you say this engine along with another 3 4a's are floating about hey? we may have to do some business!

What are the other 4a's(carby's?) PM me some details please

i wonder why HKS makes 18mm pin low comp GZE pistons then?
http://page4.auctions.yahoo.co.jp/jp/auction/d60574142

[feral4mr2]

i've had never heard or seen or seen reference to a 3 rib 4agze or a 18mm gudgeon gze piston either. or a 7 rib 'bluetop' 4age for that matter. it's wierd.

the 7 rib 'red and black' writing bigport 4age (that came stock in oz spec aw11's) has the same crank as a gze.

[Dimitri]

i was under the impression 3 ribs are all of ae86/82 origin. IE pre GZE.

i wasnt aware you could get 42mm big ends with 18mm wrist pins either.

you can definately use 40mm 3rib type crank in a later gze block, big ends change size but mains dont. you will then have the problem of having to use the corisponding pistons (cast 9.7cr).

[mr2gze]

i wonder why HKS makes 18mm pin low comp GZE pistons then?
http://page4.auctions.yahoo.co.jp/jp/auction/d60574142

maybe so you can rebuild the early bigport 4ag to be FI friendly etc..

I dunno if they are specifically for the gze, maybe they've included gze in the title to attract potential search's.

This is a bit of a grey area, so AE101LEV id be getting a smallport crank to be on safeside. Or if youve got access to the bigport crank, measure the journals!