No ones done a VQ30DET into a Z32?

Discussion in 'Technical' started by Anton, Aug 31, 2008.

  1. Anton

    Anton New Member

    I haven't seen any VQ30DET engine conversions, with the revvy nature, and modern design I thought it would have been done by now

    But the big thing that has got my so interested is the VQ30DET weighs 149kg as a bare block :O gotta love an all alloy block
     
  2. WazTTed

    WazTTed Grease Monkey

    my vg30dett weight 135 kgs on a pallet (including pallet) and it has one thing the vq doesnt.... AFTERMARKET SUPPORT ! and forged crank and rods
     
  3. Anton

    Anton New Member

    really? isn't that lighter than an SR20?

    quick search on the net shows the VG30DETT to weigh around 600lbs (272kg's)
     
  4. Swifty Devil

    Swifty Devil Member

    the best bet would be importing a vq30dett race engine.
     
  5. bluecube

    bluecube Senior member

    yeh 135kg cant be right for a cast block v6.
    Are you sure it was weighed correctly?
     
  6. WazTTed

    WazTTed Grease Monkey

    yup.. only thing it didnt have on at teh time of weight was a flywheel and turbos!! ... and u know freight companys they will milk every kilo out of it
     
  7. silver300zx

    silver300zx New Member

    rememeber iron blocks are only about 10 kgs heavier at most than a alloy block , always thought the vg30dett was about 210kg but tht might be with all accesories, thinking about the 135 kgs waztted said it seems about rite from what they parts weighed on there own when assembling my engine
     
    Last edited: Sep 1, 2008
  8. Chrispy

    Chrispy Pretentious Upstart

    I don't reckon that's right. Whenever I use freight companies they use whatever weight I tell them...

    There is no way that a long block weighs 135kg's, should be double that.
     
  9. rollin

    rollin First 9

    ive got a complete shortblock down stairs ill try weighing
     
  10. WazTTed

    WazTTed Grease Monkey

    why not get a vq35 then . and stroke it 2 a vq38 (gtr spec) then add twin turbos....

    hang on.. try finding a vq35 for under 6k... as there from the new 350z
     
  11. Anton

    Anton New Member

    hence why i brought up the subject of the VQ30DET, which is only around $1800-$2200 for a full half cut (dressed) ;)
     
  12. WazTTed

    WazTTed Grease Monkey

    again .. whats the point in a swap for a engine with the same capacity? and weaker engine internals?
     
  13. Anton

    Anton New Member

    weight saving, modern design, cheapness

    what makes you say it has weaker internals?
     
  14. Z32 TT

    Z32 TT Active Member

    Many people have looked into it your not the first ;). very good engine 550 rwhp on an unopened engine in perth. aftermarket support is very bad. everything will have to be custom made for it. due to the shape of the zed engine bay its not economical to go big single on a v engine that has huge quad cam design.

    If you want big power and lightweight engine with lots of aftermarket support get an ls1 with a gt 47 on it. big single turbo ls1 in zeds have been done.
     
  15. Anton

    Anton New Member

    LS1's are cheap, but manual boxes for them aren't :( plus I want to step forward in terms of technology.

    So are you saying the VQ doesn't fit in the Z engine bay or it's just not the best choice? because a quad cam, V6 twin turbo doesn't seem all that smart on paper, but it works.

    Is the Z engine bay smaller than an S14 engine bay?
    [​IMG]
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  16. Z32 TT

    Z32 TT Active Member

    over head cam engines and direct injection (the vq30det doesnt have it but everyone thinks its the beez neez) have been around for a LONG time its nothing new. You wont be stepping back in technology/performance by going to a pushrod. Name me and overhead cam engine in a drag car that will turn out 7000hp :D

    Pushrods were developed to keep weight down and also make the engine ALOT smaller.

    Those engine bays are Longer. The vq30 is taller then the vg and also is about the same length. Most if not all big turbo vq30det have the turbo mounted in front of the engine, this is pretty much impossible in a z32. The vq30det has a front mounted sump on it making it extremely difficult to mount it in a zed. It also has a very short stroke on it. this is good for revs but bad for turbo spool. turbo like stroke because of the increased piston speed (thus greater gas velocity) at the same rpm. For a heavier car you want a fair bit of torque down low.

    I totally agree with you they are an awesome engine though I have thought about this ALOT and for the zed it just isnt the best choice. If you had a silvia it would be an absolute deamon :D
     
    Last edited: Sep 1, 2008
  17. Anton

    Anton New Member

    thats the sort of quality info I was looking for, thankyou
     
  18. Chrispy

    Chrispy Pretentious Upstart

    Not at all, just have to ditch the air con so you can mount the radiator on a conveinant angle.
     
  19. tassuperkart

    tassuperkart Its a lie I tell you!

    Sry M8 but this might hurt a little!

    McGee's and the Sainty Bros. to name 2.

    Both Australian (altho McGee are expats, been in Seppoland for years. Would be better known for Mcgee aftermarket fuel injection clobber) with home grown OHC multi-valve/cam top fuel engines and both did it and beat the yanks at their own game.

    Their extremely successful multivalve big bangers were eventually outlawed in top fuel.

    Even the yanks are not that stupid and knew the writing was on the wall with their blind and faithful allegiance to such old fashioned 2 valve technology!
    Their reaction was as idiotic as it was predicatable.

    Ban what they could not beat nor understand, especially since the engines were designed and built by "down-under'ns!!!

    I believe the Sainty bros, may use these engines in big arsed race boats now.....or was it the other way round??? Oh well, either way!

    L8tr
    E
     
  20. tassuperkart

    tassuperkart Its a lie I tell you!

    Umm mate thats such bollocks but its funny nonetheless!!!!!!!!!

    OHC's were developed to keep the weight down in the valve gear, exploit far greater control of valve geometry, blah blah blah all to enable reliable and prolonged high rpm.
    High rpm is where the horsepower is dude!

    Sadly, an offshoot of double stick engines is their INCREASED size, complexity, and of course, cost!
    Pushrod engines are a compromise and built off the technology of the time..... and thats a looooong time ago! Old and cheap.

    LMAO!

    L8tr
    E
     
    Last edited: Sep 2, 2008

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