im putting a y8 head on my sohc zc and i have heard you have to pull the oil plug out of the middle of the block between the cylinders. is this true on all applications?
If the block has the oil jet there then yes you do have to pull it out. You can do this by sticking a screwdriver into it and simply prying it out. The y8 head already has an oil jet in it so if you leave the one in the block there it will create too much oil pressure and vtec will not activate.
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