Are all v6 bolting locations the same?

  • Turbojovi
    Turbojovi
    Junior Member
    • 22
    #1

    Are all v6 bolting locations the same?

    Hello need help
    I have a n/a vg30 z31 and im trying to buy a jdm vg30det will i be able to use a z31 transmisson clutch flyheel etc
  • G-E
    G-E
    Junior Member
    • 6320
    #2
    Yes-ish

    They will mate, the issue will be starter and flywheel..
  • michaelp
    michaelp
    Senior Member
    • 9384
    #3
    If its a DET, the Z31 trans/clutch will work but the flywheel wont…you can use the Z31 starter, though.
    - VG30DET (HE341) 86 300ZX - 1982 280ZX Turbo - Headered NA 1986 300ZX 2+2 - 2000 Xterra -
  • Careless
    Careless
    Senior Member
    • 13279
    #4
    DE = 8 bolt crank/flywheel
    E = 6 bolt crank/flywheel

    depending on engine/transmission combo, flywheel offset is different.
  • Axel kain
    Axel kain
    Moderator
    • 1221
    #5
    Motor mounts- not sure
    Engine to trans - yes
    flywheel is dependent on crank bolt pattern, and trans selection.
    Z31 6 bolt will not work on DE,
    DE 8 bolt will not work on z31 trans and starter.

    NA clutches are interchangeable.
    Damn dirty angels....these cars!

    Current Daily Driver - 86 Turbo.
    Under the cover - THE BANANA… that needs to be re-energized.
    sigpic
  • Turbojovi
    Turbojovi
    Junior Member
    • 22
    #6
    Mine is single cam the one im buying is a dual cam single turbo
  • NissanEgg
    NissanEgg
    Senior Member
    • 5220
    #7
    Being that all VG30DET's came with automatics bolted to them, you have a few options for flywheel.

    Bolt up a Z32 NA flywheel, and may need to grind the inside of the Z31 bellhousing for the ringgear to clear.

    Get a custom flywheel made using a Z31 flywheel as a template.

    All DOHC VG's have 8-bolt flywheels.
    All SOHC VG's have 6-bolt flywheels.

    1986 300ZX Turbo…sold
    1990 Skyline GT-R…new money pit
    2014 Juke Nismo RS 6-speed…daily
  • Turbojovi
    Turbojovi
    Junior Member
    • 22
    #8
    also its a vg30det japan version not a us version
  • michaelp
    michaelp
    Senior Member
    • 9384
    #9
    Turbojovi wrote: also its a vg30det japan version not a us version
    There was never a US VG30DET so I'd hope so :nanan?re
    - VG30DET (HE341) 86 300ZX - 1982 280ZX Turbo - Headered NA 1986 300ZX 2+2 - 2000 Xterra -
  • Axel kain
    Axel kain
    Moderator
    • 1221
    #10
    the 8 bolt flywheel's ring gear is not in the proper position for starter engagement from what Ive seen. - compared to Z31 6 bolt.

    NissanEgg wrote: Being that all VG30DET's came with automatics bolted to them, you have a few options for flywheel.

    Bolt up a Z32 NA flywheel, and may need to grind the inside of the Z31 bellhousing for the ringgear to clear.

    Get a custom flywheel made using a Z31 flywheel as a template.

    All DOHC VG's have 8-bolt flywheels.
    All SOHC VG's have 6-bolt flywheels.
    Damn dirty angels....these cars!

    Current Daily Driver - 86 Turbo.
    Under the cover - THE BANANA… that needs to be re-energized.
    sigpic
  • michaelp
    michaelp
    Senior Member
    • 9384
    #11
    [quote]Axel kain wrote: the 8 bolt flywheel's ring gear is not in the proper position for starter engagement from what Ive seen. - compared to Z31 6 bolt.

    Originally posted by NissanEgg
    Being that all VG30DET's came with automatics bolted to them, you have a few options for flywheel.

    Bolt up a Z32 NA flywheel, and may need to grind the inside of the Z31 bellhousing for the ringgear to clear.

    Get a custom flywheel made using a Z31 flywheel as a template.

    All DOHC VG's have 8-bolt flywheels.
    All SOHC VG's have 6-bolt flywheels.
    I can't confirm that entirely or not…I will compare in a bit with some of my parts. You could always try to source a Z31 DE flywheel or a VG20DET flywheel if not though…
    - VG30DET (HE341) 86 300ZX - 1982 280ZX Turbo - Headered NA 1986 300ZX 2+2 - 2000 Xterra -