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Thread: bigport crank in a gze

  1. #1
    ditty man Grease Monkey
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    Default bigport crank in a gze

    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

  2. #2
    I dont like the term Grease Monkey beige_bandit's Avatar
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    Default Re: bigport crank in a gze

    nope! bigport crank has 40mm bigend journals, 4agze crank has 42mm journals
    Im just a little lost but ill be fine!

  3. #3
    Gary Motorsport Inc. Too Much Toyota takai's Avatar
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    Default Re: bigport crank in a gze

    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.

    Quote Originally Posted by beige_bandit
    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.
    -Chris | Garage takai - Breaking cars since 1998
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    I dont like the term Grease Monkey beige_bandit's Avatar
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    Default Re: bigport crank in a gze

    3rib gze?

    Is this aw11 a jap aw11 or a aussie aw11?
    Im just a little lost but ill be fine!

  5. #5
    Gary Motorsport Inc. Too Much Toyota takai's Avatar
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    Default Re: bigport crank in a gze

    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.
    -Chris | Garage takai - Breaking cars since 1998
    Sparky - AE86 IPRA Racer | RZN149 Hilux - Parts and Car Hauler
    I never saw a wild thing sorry for itself. A small bird will drop frozen dead from a bough without ever having felt sorry for itself. - D.H.Lawrence

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    I dont like the term Grease Monkey beige_bandit's Avatar
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    Default Re: bigport crank in a gze

    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
    Im just a little lost but ill be fine!

  7. #7
    Gary Motorsport Inc. Too Much Toyota takai's Avatar
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    Default Re: bigport crank in a gze

    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).
    -Chris | Garage takai - Breaking cars since 1998
    Sparky - AE86 IPRA Racer | RZN149 Hilux - Parts and Car Hauler
    I never saw a wild thing sorry for itself. A small bird will drop frozen dead from a bough without ever having felt sorry for itself. - D.H.Lawrence

  8. #8
    I dont like the term Grease Monkey beige_bandit's Avatar
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    Default Re: bigport crank in a gze

    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
    Im just a little lost but ill be fine!

  9. #9
    Gary Motorsport Inc. Too Much Toyota takai's Avatar
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    Default Re: bigport crank in a gze

    All 4AGEs and are my spare parts stash, you aint getting your hands on any of them
    -Chris | Garage takai - Breaking cars since 1998
    Sparky - AE86 IPRA Racer | RZN149 Hilux - Parts and Car Hauler
    I never saw a wild thing sorry for itself. A small bird will drop frozen dead from a bough without ever having felt sorry for itself. - D.H.Lawrence

  10. #10
    I dont like the term Grease Monkey beige_bandit's Avatar
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    Default Re: bigport crank in a gze

    You corn hole kissing bastard
    Im just a little lost but ill be fine!

  11. #11
    Junior Member Domestic Engineer myne's Avatar
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    Default Re: bigport crank in a gze

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

    It's a true factory wtf

  12. #12
    Junior Member Too Much Toyota oldcorollas's Avatar
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    Default Re: bigport crank in a gze

    Quote Originally Posted by 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
    i wonder why HKS makes 18mm pin low comp GZE pistons then?
    http://page4.auctions.yahoo.co.jp/jp/auction/d60574142
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  13. #13
    broken down ex guru Chief Engine Builder feral4mr2's Avatar
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    Default Re: bigport crank in a gze

    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.

  14. #14
    Junior Member Backyard Mechanic Dimitri's Avatar
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    Default Re: bigport crank in a gze

    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).

  15. #15
    Junior Member Backyard Mechanic
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    Default Re: bigport crank in a gze

    Quote Originally Posted by oldcorollas
    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!

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