3.4 Swaps The 3.4 V6 Toyota engine

2003 3.4 VZ swap cooling system

Old 10-27-2016, 07:08 AM
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2003 3.4 VZ swap cooling system

Hey guys I'm new to the Forum so what I have is a 93 4Runner 5 speed 4x4 I have an engine from a 2003 Toyota Tacoma SR5 5 speed 4x4 I change the oil pan use the original motor mounts and the baby went in like a glove I did have to do some modifications the motor mounts because on the Block there is a nipple pressed into it on the lower half which has coolant coming out of it I have no idea what this port is for or how to Plumb it in thank you for your help I'm trying to get on the rocks
Old 10-27-2016, 12:06 PM
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It's a drain port for the block. My 96 donor didn't have anything there (from the factory), but some of the later ones did so you could attach a hose to catch the coolant as it drained out.

This isn't the best picture, but you can see the brass hex bolt that acts as the stopper just above the A/C compressor mount (on the left side), and you'll notice that there's nothing installed into that hole:
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You can remove it and not have to modify the 3.0 engine mount, or you can leave it and grind out a notch from the 3.0 engine mount to clear it; up to you.

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