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Thread: 1jz single turbo VVTI block differences to 1jz twin turbo

  1. #1
    The Bling Garage Mechanic Automotive Encyclopaedia Wildsupra's Avatar
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    Default 1jz single turbo VVTI block differences to 1jz twin turbo

    Hey guys im chasing some info on the differences between these two motors in regard to wot is interchangable etc.

    Will the sumps interchange?
    Will the engine mounts interchange (alloy ones on block that is)
    Are the flywheels the same

    Basically if i had 1 of each of these motors could i mix and match parts back and fourth on the blocks. I mean the outside of the block, not pistons, crank or rods.

    Cheers
    Matty

  2. #2
    Junior Member 1st year Apprentice
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    Default Re: 1jz single turbo VVTI block differences to 1jz twin turbo

    Hey Matty

    Sumps interchange
    Mounts are also interchangable/

    I dunno about the flywheel...

    Cheers

  3. #3
    The Bling Garage Mechanic Automotive Encyclopaedia Wildsupra's Avatar
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    Default Re: 1jz single turbo VVTI block differences to 1jz twin turbo

    cheers mate, that solves most my questions

    Matty

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    Backyard Fabricator Automotive Encyclopaedia
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    Default Re: 1jz single turbo VVTI block differences to 1jz twin turbo

    I put JZX81 alloy mounts and a JZA70 flywheel on my JZX100 engine

  5. #5
    The Bling Garage Mechanic Automotive Encyclopaedia Wildsupra's Avatar
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    Default Re: 1jz single turbo VVTI block differences to 1jz twin turbo

    Awesome!! that clears up all i needed to know.

    Thanks guys

    Im off to buy a jzx100 manual cut then

    Matty

  6. #6
    Junior Member Backyard Mechanic lojik's Avatar
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    Default Re: 1jz single turbo VVTI block differences to 1jz twin turbo

    Are the vvti 1jz's single turbo cuts significantly more expensive than the twins?

    I know that getting the vvti crankin on an aftermarket ecu is a lil tricky (expensive), it just seems like a better motor to start with unless you plan on ditchin the single straight away....
    ?

  7. #7
    JZ Powered Too Much Toyota EldarO's Avatar
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    Default Re: 1jz single turbo VVTI block differences to 1jz twin turbo

    they're more expensive, AFAIK you cant one of the cams, and even if you had something custom made up, it'd be expensive as fuck.

    management to run VVTi is expensive.

    internals are exactly the same, and ive read somewhere they run a higher compression ratio.

    just a fancy 1J with a dicky cam and a single from factory.

  8. #8
    Junior Member Conversion King whatthe?'s Avatar
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    Default Re: 1jz single turbo VVTI block differences to 1jz twin turbo

    Autronic SM4 will run VVTi without any further mods or "options", as will a power FC (hardly "expensive as fuck" at $1100 for the PFC), a pair of HKS VVTi 1J cams can be had for $1200.

    Elmo got one thing right (gasp). they run 9.1:1 comp, instead of 8.5:1 like the twin turbo version. They also have a beams head (and no, you cant bolt a standard 1J exhaust mani on, port and stud positions are different)
    Project megap00 - Gave up and sold up. Money tree died

  9. #9
    JZ Powered Too Much Toyota EldarO's Avatar
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    Default Re: 1jz single turbo VVTI block differences to 1jz twin turbo

    i dont count the PFC as they arent made anymore, but i guess you'd be able to find one second hand but new in box.

    link to hks VVTi cams? i couldnt find a fucken thing when i was looking for em a few months back, thought it had to be custom.

  10. #10
    Junior Member Conversion King whatthe?'s Avatar
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    Default Re: 1jz single turbo VVTI block differences to 1jz twin turbo

    PFC is still available new in box on ebay. There will be new stock floating around for years. Most new decent aftermarket ECUs have cam control anyway. If you want to cheap out on a microtech, well, hey.

    I've got the contact for cams in my email inbox, didnt find him on google. Actually found him on altezza club forums, although I belive he's active on nissan silvia as well. If youre really interested I'll PM you his details

    Neg rep huh Eldar? Don't care if you think I'm being a dick. I'm not the only one who wishes you'd actually stop spouting bullshit as fact in the tech section
    Last edited by whatthe?; 02-02-2008 at 10:51 PM.
    Project megap00 - Gave up and sold up. Money tree died

  11. #11
    Founding ****** Automotive Encyclopaedia Mos's Avatar
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    Default Re: 1jz single turbo VVTI block differences to 1jz twin turbo

    Quote Originally Posted by EldarO
    they're more expensive, AFAIK you cant one of the cams, and even if you had something custom made up, it'd be expensive as fuck.
    Maybe, but then few people change cams in turbo engines.

    Quote Originally Posted by EldarO
    management to run VVTi is expensive.
    That's misleading - there are entry level and midrange products available; products capable of running VVTi are generally no more expensive than any other midrange product. If you wish to use an entry level product, you're limiting yourself in many more ways that just the inability to run VVTi.

    Quote Originally Posted by EldarO
    internals are exactly the same, and ive read somewhere they run a higher compression ratio.
    That's a contradiction.

    Quote Originally Posted by EldarO
    just a fancy 1J with a dicky cam and a single from factory.
    There are several differences with most VVTi engines that make them better engines than the non-VVTi versions.
    As an objective toyota enthusiast you should be able to recognise that, and not just bad mouth better technology because of a possible subjective experience.

    And neg repping someone for correcting your misinformation? Please!!

    Mos.
    Admin, I.T., Founding Member, Toymods Car Club Inc.
    2000 IS200 Sports Luxury 1UZ-FE VVTi, 1991 MX83 Grande 2JZ-GTE (sold)

  12. #12
    Junior Member Grease Monkey
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    Default Re: 1jz single turbo VVTI block differences to 1jz twin turbo

    There is a new power FC for the 1JZ VVTI soarer on eBay Right now and they have been commonly available over the past year on eBay at least.

  13. #13
    The Bling Garage Mechanic Automotive Encyclopaedia Wildsupra's Avatar
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    Default Re: 1jz single turbo VVTI block differences to 1jz twin turbo

    Quote Originally Posted by lojik
    Are the vvti 1jz's single turbo cuts significantly more expensive than the twins?

    Yeah mate they seem to still be more expensive than the twin turbo ones, plus they are generally a few years newer also, hence lower k's in most scenario's.

    An awesome engine in stock form if you ask me.
    I wont be looking to upgrade management or even mod it so as far as cost go's im not concerned there, the cut already has front mount and hks pod, thats enough for what i want.

    Matty

  14. #14
    JZ Powered Too Much Toyota EldarO's Avatar
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    Default Re: 1jz single turbo VVTI block differences to 1jz twin turbo

    Quote Originally Posted by Mos
    Maybe, but then few people change cams in turbo engines.

    thats what i was talking about, compare non-VVTi aftermarket cams to VVTi ones, they are a shitload more expensive.


    That's misleading - there are entry level and midrange products available; products capable of running VVTi are generally no more expensive than any other midrange product. If you wish to use an entry level product, you're limiting yourself in many more ways that just the inability to run VVTi.

    yes, hence decent management is expensive, but moreso for VVTi.

    That's a contradiction.

    no it isnt, the internals are exactly the same, as proved by the EPC, however, you can actually vary compression ratios, via head gasket thickness, and a range of other ways, which they've quite obviously done here, as the internals ARE exactly the same.

    There are several differences with most VVTi engines that make them better engines than the non-VVTi versions.
    As an objective toyota enthusiast you should be able to recognise that, and not just bad mouth better technology because of a possible subjective experience.

    well, please, elaborate, inform me of the benefits? as i priced it up, everything for them, while it being a better motor, was more expensive, and therefore it came down to a "bang for buck" type deal, where the non VVTi came out on top.

    And neg repping someone for correcting your misinformation? Please!!

    i actually neg repped him for the "Elmo got one thing right (gasp)" comment, being a dick completely uncalled for.
    hmmmm, did that answer all your issues?

    once again, you all jump to conclusions, thinking im being a know-it-all when in fact im expressing my views.

    everything you've bitched about has been cleared up quite easily, and you'd rather jump to a conclusion than ask for an explanation, and you'll no doubt do the same here.

    anyway, ill leave mattys thread alone, feel free to respond, as i know you will, but safe to say, i dont give a fuck anymore.

  15. #15
    Junior Member Too Much Toyota RONA's Avatar
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    Default Re: 1jz single turbo VVTI block differences to 1jz twin turbo

    Toyota would not change compression via HG thickness and you aren't going to gain 0.5:1 comp just from doing it unless the standard gasket was pretty farking thick.
    If in doubt power out

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