Chase Bays Compact Upper Water Neck - Toyota 1JZ-GTE | 2JZ-GTE
A major unsolved problem for the Toyota 1JZ-GTE | 2JZ-GTE engines is the upper water neck.
This is crucial especially during swaps. It's bulky and it's difficult to fabricate on and it just doesn't make sense for most setups.
Even in factory JZ chassis, the hose routes up and over to the opposite side it starts.
This problem lead to Chase Bays starting to develop the right solution.
The parameters such as an outlet on the engine, the amount of things need to attach to it and the internal size are among challenging consideration for an extremely compact solution.
The lower bolt for the water neck goes right through the path Chase Bays wanted the outlet to face.
If you run a long bolt all the way through that portion you'd have to raise the neck another 1.5" which is not what the design intent to be.
After many designs, a great solution was adopted by making the lower port a small spade so the neck can slot over the button head Allen bolt and then slide in.
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