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Whats better? Ecotec or Alloytec V6????

Discussion in 'General' started by mattathm, Aug 27, 2012.

  1. mattathm

    mattathm Member

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    Just tossing up getting a VY V6 wagon... but cant really decide if paying the extra money for a VZ to get the alloytech engine is worth the $$$$

    Is the alloytec wayyyyyy better than the Eco?

    Does less things go wrong with it?

    Do they have heaps more power and burn 1/2 the gas...?

    Whats easier to mod?, and which one gets the more HP out of the same mods?

    :blah blah::blah blah::blah blah::blah blah::blah blah::blah blah:

    Any thoughts welcomed.
    Hope I havent opened up an ECO vs ALLOY fight on here now...LOL:boxing:
     
    Last edited: Aug 27, 2012
  2. ls1 tiga

    ls1 tiga New Member

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    Perfect thread! I'm in the same boat :)
     
  3. aussieakito

    aussieakito Holden Dealer Master Tech

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    i heard the the alloy is much smoother.
    but i could be wrong.
     
  4. 89vn_Jai

    89vn_Jai New Member

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    Alloytec: Definately smoother, more economical. More powerful. More expensive to work on.
    But it is also just that little bit more a 'throw away' engine like most cars are nowadays. (as in cheaper to replace then repair).
    Ecotec(v6): In my opinion more reliable both from new, and down the track with more km's. Less powerful. Easy to work on.
    I have never owned either motor but I am an apprentice mechanic and have driven and worked on plenty of both.
    EDIT: In conclusion I would way prefer ecotec even for modding. But I don't have much personal expreiance to do with extensively modding either motor so I would talk to people who have. :)
     
  5. ben315vz

    ben315vz Donating Member

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    My boss purchased a 2006 VZ Berlina with the Alloytec and in his opinion, the Ecotec has more power. Also in his own words "it feels more gutless then the Ecotec".

    I myself would have to go with Ecotec as well because I have found them easier and cheaper to work on.
     
  6. VR=355

    VR=355 New Member

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    Ecotec =3.8, Alloytec=3.6 & 3.0 ltr
     
  7. HoldenOn

    HoldenOn New Member

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    I've heard that the alloy tech is a bit gutless and lacks low down torque, making the ecotec feel allot better to drive even though it may have less KW up high.
     
  8. Dr HaxZaw

    Dr HaxZaw New Member

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    the alloytec is a double overhead cam engine though so down the track getting more power out of it will be easier (i.e BOOST)
     
  9. Whitesack07

    Whitesack07 Member

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    I've owned a Vz s ute an I've now got a vx s pack, to down low vx feels better, but in higher rev range alloytec was better, both manual in the 5 and 6 speed, the alloytec was good on fuel, but the vx seems to be going better, could just be me, and parts for ecotec are so cheap an motors are cheap as to replace, when the alloytec is a pain to replace things, my ecotec has 240 an is running fine, just service every 5k an you should be good, an just look after the motor
     
  10. MikeCuzzy

    MikeCuzzy Jumping puddles

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    I've owned an Ecotec and I currently have an Alloytec. Personal opinion, I prefer the Ecotec.

    Ecotec is easier to work on.
    Alloytec is more responsive, more powerful (and more powerful low down) and has longer service cycles.
    Ecotec has more head room for mods.
    Alloytec is smoother and is matched to better gearboxes and better tuned 4-speeds if they have the old ones.
    Ecotec has proven longevity.
    Alloytec is better on fuel generally.

    Essentially the Ecotec is a bit of a dinosaur, but has proven itself time and again. The Alloytec is the new upstart that's looking to prove itself.

    In your specific example, I would go for the VY with a lowish km Ecotec and have some fun.
     
  11. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    Have you taken the rocker covers of a high Km alloytec??? I'd service them regularly too if it was mine. sludge build up isn't a good thing

    I'd also be weary of worn timing chains, seems to be a bit of a issue as well. Not cheap to replace but if they do need doing you may as well throw in a set of cams from MACE whilst your at it.


    Cheers
     
  12. someguy360

    someguy360 Well-Known Member

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    raw KW and economywise the alloytec is better.

    reliability & ease to work on then the ecotec is better.

    Both have their good and bads, I prefer the ecotec because it's just so simple and cheap to repair/maintain, the ecotec also has a much wider array of aftermarket parts available if thats the sort of thing your in to

    I also much prefer the ecotec due to the cable driven throttle instead of fly by wire....I can't stand electronic throttles, just doesn't feel right.


    I have worked on all GM engines from the old holden straight 6's all the way up to the LS3, the Ecotec is much more straight forward than the alloytec and don't even get me started on the SIDI......but they are all fantastic engines in their own ways


    (The ecotec is also a bigger block, no replacement for displacement hehe)
     
  13. 383 hatch

    383 hatch Well-Known Member

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    Ecotec hands down IMO.

    I wouldn't have an alloytec if they were being given away.

    New Commodores should only have 1 engine option, V8.
     
  14. tim005

    tim005 Yet Another VS Ute Owner

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    I've said it once and I'll say it again, an alloytec with an exhaust sounds like someone farting with their mouth into an empty baked bean can.
    Try what you want, extractors, 2 1/2 inch, 3 inch, hi flo cats etc etc etc, the alloytec is still up there with the worst sounding 6 I will ever come across....
     
  15. 383 hatch

    383 hatch Well-Known Member

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    Hate to tell you mate, but an Ecotec isn't any better....As much as i think the Ecotec is a pretty good thing, exhaust note isn't one of it's strong points.
     
  16. MikeCuzzy

    MikeCuzzy Jumping puddles

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    As advised by Holden, never said I did it lol.

    Mine gets every 10k for what it's worth. This timing chain issue seems common, mine is Jan 07 build, so it has the crap chain in it, which they didn't swap over till Sep 07 if memory serves. So I am not hopeful.
     
  17. tim005

    tim005 Yet Another VS Ute Owner

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    I'm not one of those P platers with my head up my behind, I know that my 6 doesn't sound remotely good compared to any 8 on the market.
    That being said, myself and many more of my mates whom both own ecotecs, alloytecs, ford straight sixes, 5 litres and LS1's all agree that alloytec's omitt a horrible sound out of their exhausts and an ecotec in terms of a 6 sound much better when the exhaust is modified correctly...
     
  18. mattathm

    mattathm Member

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    Wow thanks for all the replies....
    Ill keep monitoring this thread tho and see but so far ECOTECH seems to be a far more popular engine.

    When I was younger I was a bit of a lad, some lad is still left in me so I will be doing a few mods to the engine just to make it go a bit better than factory.
    The mods will all be bolt on unless someone comes up with an internal mod that just HAS to be done.

    I did have a VY Calais LS1 and I remapped it with CAI and full exhaust, it totally transformed the engine!!

    Im assuming the same mods are available for the Ecotech????

    Cheers in advance...
    Matty
     
  19. VYMAD

    VYMAD SILVERFOX

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    Ecotec ftw!
     
  20. TI3VOM

    TI3VOM Active Member

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    What are the recommend service intervals for the alloytec?
     

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