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Thread: 2jz Bottom End 1jz Head

  1. #16
    doctor ed Conversion King ed's Avatar
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    Default Re: 2jz Bottom End 1jz Head

    haha.. fair call... *looks at yager and asks where the fuck eds valve stem seals have gone*

    regarding Mr 'PIMPN soarer' dude though - this guy clearly doesnt have a clue. best to buy a 2jz front cut? then completely disassemble it, then buy a 1jz and disassemble it? all with background idea of "finding the best way to go about it $$$ wise"

    come on!
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  2. #17
    Junior Member Too Much Toyota RONA's Avatar
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    Default Re: 2jz Bottom End 1jz Head

    Quote Originally Posted by ed_jza80
    *ed unfolds his banana chair, cracks open a beer, and sits back to enjoy the hilarity of watching someone else burn money whilst kicking a very dead horse*
    this coming from the man that built an NA 7m
    If in doubt power out

  3. #18
    doctor ed Conversion King ed's Avatar
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    Default Re: 2jz Bottom End 1jz Head

    Quote Originally Posted by 7MA61
    this coming from the man that built an NA 7m
    it cost me nearly nothing to build
    people were *literally* giving 7Ms away at that time


    *looks glaringly at dave's 5mte*
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  4. #19
    The Bling Garage Mechanic Automotive Encyclopaedia Wildsupra's Avatar
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    Default Re: 2jz Bottom End 1jz Head

    Quote Originally Posted by ed_jza80
    haha.. fair call... *looks at yager and asks where the fuck eds valve stem seals have gone*

    regarding Mr 'PIMPN soarer' dude though - this guy clearly doesnt have a clue. best to buy a 2jz front cut? then completely disassemble it, then buy a 1jz and disassemble it? all with background idea of "finding the best way to go about it $$$ wise"

    come on!
    mate you are absolutely correct there, in experianced people prolly shouldnt try things beyond them. I'd agree cheap and easy would be 2j straight up.

    this coming from the man that built an NA 7m
    I had great success with my N/A 7m motor after pulling it apart to do head gasket, i shaved the head well boyond limits to up compression and then ported the head myself.
    The result was a mid 15sec NA MA70 that continued to own stock turbo MA70's at the lights and at the strip

    Matty

  5. #20
    Toymods Pimp Chief Engine Builder Norbie's Avatar
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    Default Re: 2jz Bottom End 1jz Head

    I reckon you should forget the JZ engines entirely and throw in a built 202 red motor. I mean that counts as "different" doesn't it?

  6. #21
    JZ Powered Too Much Toyota EldarO's Avatar
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    Default Re: 2jz Bottom End 1jz Head

    fuck yeah, hell, wait till river finds this thread and suggests you skip the 18rg so that you dont have issues with....

    "so much torque, the chassis twisted, coming off the start line"

    fucken movie

    this thread is a laugh, completely off topic.

    Elmo.

  7. #22
    Party Animal Supreme Too Much Toyota MR 1JZ's Avatar
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    Default Re: 2jz Bottom End 1jz Head

    im here for the gangbang...

    from what it sounds like ladies...he already has a 1J in his car

    91 soarer usually suggests JZZ30...which means the 2J bottom end isnt all that unfeasible...easier rego for one
    Project Soarer II - Sold
    Evo 5 - The silver fruitbox
    "I'm the man who has the ball. I'm the man who can throw it faster than f**k. So that is why i am better than everyone in the world. Kiss my ass and suck my dick... everyone."

  8. #23
    Awesome ****** Domestic Engineer Javal's Avatar
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    Default Re: 2jz Bottom End 1jz Head

    Quote Originally Posted by Norbie
    I reckon you should forget the JZ engines entirely and throw in a built 202 red motor. I mean that counts as "different" doesn't it?
    Oh, nah bro.

    The inlet is on the right side, but the exhaust isn't.

    THINK ABOUT IT.

    still, i lol'd.
    The 18R-G. The GOOD 2 Litre Tractor motor.

  9. #24
    Junior Member 1st year Apprentice
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    Default Re: 2jz Bottom End 1jz Head

    Assuming you already have a 1J fitted into your car, a 1.5JZ is trivial. Motor mounts, oil pans, water pumps, power steering, A/C, alternators, all transfer across from one to another.

    Now, going on the assumption that you have a full 1JZ already, you'll need a full 2JZ bottom end, as well as a 2JZ timing belt, a 2JZ serp belt tensioner, and perferrably, a 2JZ water pump with 2JZ water neck, as it's longer then the 1JZ one to reach up the extra inch to the head.

    You should use a 1JZ head gasket on it, the 2JZ one has a slightly more restrictive water jacket.

    I'm in the process of finishing up a 1.5JZ into my JZA70 right now. The reason being, I had a nicely built 1JZ, and seized the bottom end. I ended up buying a complete 2JZ motor, but I'm leaving the 1JZ head on for now, as I don't have a turbo manifold for the 2JZ yet.

    Now, differences that people don't know about the two motors:
    - The 2JZ has a re-designed combustion chamber compared to the 1JZ. You can run more timing on the 2JZ head over the 1JZ head. Something to think about when you're trying to tune a 1.5JZ
    - I haven't confirmed this, but I THINK the 1JZ has a SLIGHTLY smaller combustion chamber volume, leading to a slightly higher compression on the 1.5JZ vs either a 1JZ or 2JZ. This is just rumor though. I haven't compared the pistons, or TDC positions of the two motors to confirm.

  10. #25
    The Bling Garage Mechanic Automotive Encyclopaedia Wildsupra's Avatar
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    Default Re: 2jz Bottom End 1jz Head

    Good info there mate, cheers.
    Have you modified the 1j head at all before fitting it to the 2j block? I was under the impression water galleries or something needed welding up?
    I noticed on the 2 headgaskets that the the water jackets were a lot more restrictive on the 2j, but you say a 1j gasket is fine to use?
    Cheers
    Matty

  11. #26
    Junior Member 1st year Apprentice
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    Default Re: 2jz Bottom End 1jz Head

    Nothing needs welding up. People do it all the time over on this side of the ocean Almost everything lines up perfectly.

    Either head gasket will work, but seeing as how the 1JZ head is sort of expecting the enlarged water jackets, it would be best to use that head gasket.

  12. #27
    The Bling Garage Mechanic Automotive Encyclopaedia Wildsupra's Avatar
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    Default Re: 2jz Bottom End 1jz Head

    Hmm thats interesting then.......
    People over there are obviously have success with doing it too?
    Is the 2jz timing belt longer?

  13. #28
    Toymods Pimp Chief Engine Builder Norbie's Avatar
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    Default Re: 2jz Bottom End 1jz Head

    2JZ block is taller so yes the timing belt must be longer.

  14. #29
    JZ Powered Too Much Toyota EldarO's Avatar
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    Default Re: 2jz Bottom End 1jz Head

    AFAIK Shane (1JZ.747) is the only person on toymods (in australia) that has a running 1.5J,
    so might be smart to drop him a PM if he's willing to give up the info?

    half of people say that it will bolt straight on, other half say it needs some welding and machining?!?!?

    Elmo.

  15. #30
    Party Animal Supreme Too Much Toyota MR 1JZ's Avatar
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    Default Re: 2jz Bottom End 1jz Head

    errr...manny on here has one in a JZZ30...
    Project Soarer II - Sold
    Evo 5 - The silver fruitbox
    "I'm the man who has the ball. I'm the man who can throw it faster than f**k. So that is why i am better than everyone in the world. Kiss my ass and suck my dick... everyone."

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