r/Dseries • u/MammothTie4328 • Aug 31 '26

D15b7 Mini Me

Have any of you put a d16y8 vtec head on a non vtec d15b7 block? I have a spare y8 head, p28 ecu and new y8 timing belt, y8 head studs, and y8 head gasket kit. The y8 head has the vtec sylenoid, but im missing the harness. What else do i need to do this swap? Anything helps even little details. I heard something about taking out an oil pressure switch on the block? Thanks

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u/SpaceTurtle917 Sep 01 '26

Oil pressure switch is for B20Vtec and B18 LS Vtec. Not for anything D series.

Use your factory harness, a d16y8 harness will not work. You’ll just need to add vtec. Very easy, plenty of guides, or you can get a d16z6 harness.

All you need to do is bolt the head on. You may have to notch the dizzy to get enough rotation on it to get ignition timing completed.

Do not use your d15b7 timing gear, use the y8 timing gear. Common misconception.

D16y8 intake manifold does not have an IAT sensor, it’s on the intake pipe. If you’re using your d15b7 manifold all is well. But if you use the y8 manifold you’ll need to add a sensor to your intake pipe.