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The mkiv Supra Owners Club

Cylinder head difference 1jz/2jz (GE only)

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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



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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 by Mike2JZ (see edit history)
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