Stock.supra.98 Posted January 24, 2023 Share Posted January 24, 2023 Hey All, I currently have a 2JZ GE non vvti, and ordered a GE vvti head, but then I had a thought.. how do I know if it's from a 2jz or 1jz? Does anyone know how to tell the difference or things to look out for? Thanks Link to comment Share on other sites More sharing options...
Mike2JZ Posted January 24, 2023 Share Posted January 24, 2023 All 2JZGE VVTi's I've worked on have 3.0 printed on the back of the head like so Also like the GTE versions of the head, the 1JZ head has small exhaust ports compared to 2JZ 1JZGE VVT Exhaust Ports 2JZGE VVT Exhaust Ports Link to comment Share on other sites More sharing options...
Mike2JZ Posted January 24, 2023 Share Posted January 24, 2023 Also the combusion chamber and squish area on a 1JZGE VVTi is a lot tighter compared to 2JZGE VVT 1JZGE VVTi 2JZGE VVTi Link to comment Share on other sites More sharing options...
Mike2JZ Posted January 24, 2023 Share Posted January 24, 2023 (edited) I could be wrong but to me it looks like both 1JZGE & 2JZGE VVTi heads are cast from the same forging, then machined differently. Intake & Exhaust flanges appear to have the same bolt hole patterns on both heads, so manifolds for their respective side should be interchangable. Edited January 24, 2023 by Mike2JZ (see edit history) Link to comment Share on other sites More sharing options...
Stock.supra.98 Posted January 25, 2023 Author Share Posted January 25, 2023 Thank you, will check the head tomorrow. Hopefully they've sent me the 2jz as requested. Link to comment Share on other sites More sharing options...
Stock.supra.98 Posted January 25, 2023 Author Share Posted January 25, 2023 I've managed to check it and it has 3.0 printed on the back and has round ports. Thanks for that!! Link to comment Share on other sites More sharing options...
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