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Thread: 1JZ-GTE vs 2JZ-GTE JDM Cam Profiles

  1. #1
    Is a Chief Engine Builder wilbo666's Avatar
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    Default 1JZ-GTE vs 2JZ-GTE JDM Cam Profiles

    I've taken some measurements off my 1JZ-GTE and 2JZ-GTE JDM cams:

    1JZ-GTE Exhaust Cam: Peak ~7.98mm @ ~328Deg
    1JZ-GTE Inlet Cam: Peak ~7.72mm @ ~34Deg

    2JZ-GTE JDM Exhaust Cam: Peak ~8.67mm @ ~328Deg
    2JZ-GTE JDM Inlet Cam: Peak ~8.08mm @ ~41Deg

    Base circle ~36mm.

    These values seem to differer from the quoted values, so I double checked the max lifts with a micrometer, and got within about 0.03mm from all 4 of my dial gauge recorded readings...

    Anyway these are just the values that I recorded... I wouldn't base anything too important off them



    I'm happy to email the excel spreadsheet with my measurements to anyone that wants it, just let me know. And if someone wants to host it that is OK by me too.

    Cheers
    Wilbo

  2. #2
    Toymods member no 341 Domestic Engineer amichie's Avatar
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    Default Re: 1JZ-GTE vs 2JZ-GTE JDM Cam Profiles

    Is that lobe lift or cam follower lift??

  3. #3
    regular fella Conversion King chris davey's Avatar
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    Default Re: 1JZ-GTE vs 2JZ-GTE JDM Cam Profiles

    Top work Wilbo. you got my email address don't you?

    Now grab that exhaust cam off Pete for the US spec one
    Quote Originally Posted by MR 1JZ View Post
    that interior is so jap...just looking at it makes me want to kill a whale
    QUICKEST 1JZ'S IN OZ

  4. #4
    Is a Chief Engine Builder wilbo666's Avatar
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    Default Re: 1JZ-GTE vs 2JZ-GTE JDM Cam Profiles

    Quote Originally Posted by amichie
    Is that lobe lift or cam follower lift??
    Lobe.

    Righto, Chris I'll email it off to ya!

    Cheers
    Wilbo

  5. #5
    Toymods member no 341 Domestic Engineer amichie's Avatar
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    Default Re: 1JZ-GTE vs 2JZ-GTE JDM Cam Profiles

    Quote Originally Posted by wilbo666
    Lobe.

    Righto, Chris I'll email it off to ya!

    Cheers
    Wilbo
    Hi Wilbo
    Can you please send me the excel sheet. I have a program that converts lobe lift to valve lift. All I need is the lobe lift + the base circle diameter which you have already stated above.

    Thanks Andrew.

    [email protected]

  6. #6
    Is a Chief Engine Builder wilbo666's Avatar
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    Default Re: 1JZ-GTE vs 2JZ-GTE JDM Cam Profiles

    I'll email it off

    Cheers
    Wilbo

  7. #7
    2JZ Nut Grease Monkey 98SZR's Avatar
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    Default Re: 1JZ-GTE vs 2JZ-GTE JDM Cam Profiles

    Some very good info there.
    +rep

    Only question I have is compared to official stats for 2jz, the only thing could be if they are US stats, I'd rather have proven tested info (yours) than some unknown webpage:

    Valves: efi/twin cam/24v
    Intake valve dia. 33.5 mm
    Intake valve lift 7.8 mm
    Exhaust valve dia. 29.0 mm
    Exhaust valve lift 8.4 mm
    Intake opening 3 deg BTDC - 41 deg ABDC
    Exhaust opening 52 deg BBDC - 4 deg ATDC
    Last edited by 98SZR; 22-11-2007 at 02:31 PM.

  8. #8
    Is a Chief Engine Builder wilbo666's Avatar
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    Default Re: 1JZ-GTE vs 2JZ-GTE JDM Cam Profiles

    Quote Originally Posted by 98SZR
    Some very good info there.
    +rep

    Only question I have is compared to official stats for 2jz:

    Valves: efi/twin cam/24v
    Intake valve dia. 33.5 mm
    Intake valve lift 7.8 mm
    Exhaust valve dia. 29.0 mm
    Exhaust valve lift 8.4 mm
    Intake opening 3 deg BTDC - 41 deg ABDC
    Exhaust opening 52 deg BBDC - 4 deg ATDC
    Glad someone brought that up...

    Quote Originally Posted by wilbo666
    These values seem to differer from the quoted values, so I double checked the max lifts with a micrometer, and got within about 0.03mm from all 4 of my dial gauge recorded readings...
    http://mkiv.supras.org.nz/specs.htm says
    Inlet Cam Lift: 7.8mm
    http://www.turbosupras.com/pages/en/...ZA80/jza80.htm
    Intake Camshaft lift: 7.88mm
    Exhaust Camshaft lift: 8.4mm
    http://www.toymods.net/forums/showthread.php?t=10384 [chris]
    Intake lift
    1jz: 7.61
    2jz: 8.16

    Exhaust lift
    1jz: 7.6
    2jz: 8.66
    http://crower.com/cat/import/toyota/...amshafts.shtml
    Stock Factory O.E.M. specs (2JZ-GTE) for turbo 248 / 248 200 / 204 .338" inch .346"

    Inlet: 8.58mm
    Exhaust: 8.79mm
    Seems a lot of people list a lot of different values...! The good thing about doing something yourself is that you get to find out for yourself

    Cheers
    Wilbo

  9. #9
    2JZ Nut Grease Monkey 98SZR's Avatar
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    Default Re: 1JZ-GTE vs 2JZ-GTE JDM Cam Profiles

    Also sorry yes did see how you mentioned they differ, just wanted to know why

    Found a good sheet with an overview of all 2jzgte engines, good to get all the figures! Link here: http://www.turbosupras.com/pages/en/...ZA80/jza80.htm
    Last edited by 98SZR; 22-11-2007 at 03:11 PM.

  10. #10
    Is a Chief Engine Builder wilbo666's Avatar
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    Default Re: 1JZ-GTE vs 2JZ-GTE JDM Cam Profiles

    The figures that others have in my opinion must be wrong...

    The EPC lists only 1 exhaust camshaft for the 2jz-gte, and 2 inlet camshafts for the 2jz-gte (one JDM, one USA)...

    So I find it a bit disturbing that there are so many 2jz-gte lift values floating around...either my EPC is wrong or some of the measurements floating around are wrong (and hey that might be mine!)...!

    ...I'd personally take em out to save cluttering the thread, leave a link in you want, but it doesn't really bother me either way

    Btw if anyone has a 2jz-ge inlet camshaft I'd be interested in seeing how that stacks up, and if the 2jz-ge inlet cam can fit the 1jz-ge and 2jz-ge heads (the exhaust cam won't fit because of the dizzy drive gear but the inlet might?)...

    Cheers
    Wilbo

  11. #11
    2JZ Nut Grease Monkey 98SZR's Avatar
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    Default Re: 1JZ-GTE vs 2JZ-GTE JDM Cam Profiles

    Quote Originally Posted by wilbo666
    The figures that others have in my opinion must be wrong...

    The EPC lists only 1 exhaust camshaft for the 2jz-gte, and 2 inlet camshafts for the 2jz-gte (one JDM, one USA)...

    So I find it a bit disturbing that there are so many 2jz-gte lift values floating around...either my EPC is wrong or some of the measurements floating around are wrong (and hey that might be mine!)...!

    ...I'd personally take em out to save cluttering the thread, leave a link in you want, but it doesn't really bother me either way

    Btw if anyone has a 2jz-ge inlet camshaft I'd be interested in seeing how that stacks up, and if the 2jz-ge inlet cam can fit the 1jz-ge and 2jz-ge heads (the exhaust cam won't fit because of the dizzy drive gear but the inlet might?)...

    Cheers
    Wilbo
    Done mate. Yes there are so many figures out there floating around, but I'd rather measure them myself or get the measurements you have taken then some unconfirmed internet stats. As an example they call my paint code Grayish Green Mica Metallic (6NO) when it's real Toyota colour is Moonstone Pearl (6NO), so you can never be sure info is going to be 100% correct on the intraweb!

    Will check my manuals and EPC at home tonight and see what they say.

  12. #12
    Supra Addict Grease Monkey Enigma-Penguin's Avatar
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    Default Re: 1JZ-GTE vs 2JZ-GTE JDM Cam Profiles

    +rep (if I can, I did it for the another thread before )

    The ones I used to ref off were these:

    Intake Exhuast
    1jz-gte
    lift 7.69 7.95
    duration (adv) 224 228
    duration @ .050" 189.1 194.1
    lobe centre

    2jz-gte USDM
    lift 8.25 8.4
    duration (adv) 233 236
    duration @ .050" 200 205
    lobe centre

    2jz-gte JDM
    lift 7.8 8.4
    duration (adv) 224 236
    duration @ .050" 205
    lobe centre

    2jz-ge
    lift 8.3 8.3
    duration (adv) 230ish 230ish
    duration @ .050"
    lobe centre

    HKS 256 for 1jz
    lift 8.7 8.7
    duration (adv) 256 256
    duration @ .050" 211.8 210.4
    lobe centre 110 115

    HKS 264 for 1jz
    lift 9 9
    duration (adv) 264 264
    duration @ .050" 221.2 220
    lobe centre 110 115

    Crower small core 272 for 1jz
    lift 8.7376 8.7376
    duration (adv) 272 272
    duration @ .050" 218 218
    lobe centre
    I knew there were plenty of values floating about, but its nice to have some solid figures ( I love how they use "ish" on some figures). I'm tempted to measure my HKS 264 IN/EX ones now. I thinks I need a micrometer
    Last edited by Enigma-Penguin; 22-11-2007 at 04:03 PM.

  13. #13
    Forum Sponsor Conversion King
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    Default Re: 1JZ-GTE vs 2JZ-GTE JDM Cam Profiles

    Quote Originally Posted by wilbo666

    Btw if anyone has a 2jz-ge inlet camshaft I'd be interested in seeing how that stacks up, and if the 2jz-ge inlet cam can fit the 1jz-ge and 2jz-ge heads

    Cheers
    Wilbo
    i is confused,
    i have a 2jz-ge here if you want me to check the inlet but if you want to know if it fits the gte heads id guess no as it probly won't have the triggers for the cam pos sensors, i can check on teh weekend if you would like.

    cheers
    linden
    Quote Originally Posted by WHITCHY
    Prefer someone around the Sydney area but will travel a few hours for a good box!

  14. #14
    Is a Chief Engine Builder wilbo666's Avatar
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    Default Re: 1JZ-GTE vs 2JZ-GTE JDM Cam Profiles

    Quote Originally Posted by The Real Roadrunner
    i is confused,
    i have a 2jz-ge here if you want me to check the inlet but if you want to know if it fits the gte heads id guess no as it probly won't have the triggers for the cam pos sensors, i can check on teh weekend if you would like.

    cheers
    linden
    You are right, that won't work then, I didn't think of that

    Scratch that idea

    Cheers
    Wilbo

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