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V6 Crankshaft Info

Discussion in 'V6 Development And Modification' started by 383 hatch, Nov 4, 2007.

  1. rodgertoilman

    rodgertoilman New Member

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    Looks like you know these well, i have a VN manual engine with the flywheel its in a complete going order engine. And i have a VR engine auto with a buggered crank run a rod bearing getting a hiding one long hot day at high speed too long, the rest of this engine was sweet. Question will the VN crank fit in the VR block ?
    As my son points out the VR had slight improve in HP due to heads or cam etc I would like to fix the VR motor to go into a Pontiac Fiero as was the VN motor before a crash
     
  2. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    It depends on which VN engine you have the early cranks aren't compatible because they use a different rear seal arrangement.
     
  3. rodgertoilman

    rodgertoilman New Member

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    How can i identify the VN early or late and the rear seal style without opening up the motor ??
     
  4. Casso

    Casso FastFogey

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    Just wondering if I can use ecotec v6 crank in vr series 2? the reason I ask is, that I'm rebuilding series2 vr and it needs a crank regrind, I have a good ecotec crank and this would save me the cost of the regrind, Thanks
     
  5. Tsunamix

    Tsunamix Active Member

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    Unfortunately No.

    The VR used a Buick based 3.8L, while the VS introduced the GM3800 based Ecotec engine.

    Not the same engine.

    The Holden VS Commodore was released in 1995 as the mechanical update of the VR model. While the physical exterior changes were minimal from its predecessor, the introduction of the Ecotec V6 engine (Emissions and Consumption Optimisation through Technology) warranted the new model release
     
  6. CherneVY

    CherneVY New Member

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    HI GUYS & GIRLS

    I've just fitted a new clutch and replaced the rear main seal. When putting my flywheel back on I managed to somehow snap one of my bolts in the crank, instead of getting it removed I thought it would be fine still if I just put the other 7 bolts in thinking that it would still stay pretty balanced.

    When getting everything back together I started the car and it had crazy vibrations in between about 1300-2000rpm and continues to vibrate a lot when driving would this be due to that one bolt missing ??

    Also changed engine mounts and gearbox mounts.

    Any help would be greatly appreciated :)
     
  7. Dominic.john

    Dominic.john New Member

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    Hi guy i have a vn s1 stroker crank and wanted to know if it would fit im my vs ute they are both manual
     
  8. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    Nope, VN s1 is the odd one out unfortunately.
     
  9. karter13

    karter13 New Member

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    V6 vn s1 is there a crankshaft ie forged or stronger than standed
     
  10. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    Possibly something from the US as the VN s1 V6 manual crankshaft is a carry over from an earlier version of the V6 engine.
     
  11. karter13

    karter13 New Member

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    Hi would u no of a stronger ie maby forged crankshaft for my 1989 vn v6 auto. Many thanks steve
     
  12. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    What are you intending to do with it? The factory crank is fairly strong to begin with, I know of one guy that's got to be making around the 600hp on a stock bottom end V6 engine.

    There is a stroker crankshaft available for it, not sure how strong they are.
     
  13. HICOMPVN

    HICOMPVN Wanting That Lil Bit More

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    i got a quick question.... i would like to change out my VR s2 V6 auto crank. Can i use a VS-VX eco V6 Auto crank.

    my girl has thrown a con bearing, and i was thinking it would be easier and cheaper to use a crank out of the eco, to put in my buick s2 with new bearings.

    So is from what you guys have been saying, buick s2 auto cranks are identical to the eco auto's... so saying that my above question would be yes.. can some one please confirm..
     
  14. delcowizzid

    delcowizzid on holiday

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    the balancing would be way off due to the lighter ecotec internals compared to buick cheaper to just fit a $150 2nd handy engine and go again
     

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