Make sure the plug is completely threaded down and blow the head surface. If it's not, you may need to have a machine shop resurface the head until you get a completely flat surface. Should not cost no more then $90 for the head to be resurface. Also you can choose to have the shop weld the passage instead of tapping it yourself.
Relocating Dowel Pins
The B16a/B18c1 dowel pins is located on the opposite side of the head as compared to the B18b/A heads.
So what needs to be done is relocate the dowel pins
from the Exhaust side dowel holes to the Intake side.
The dowel holes @ the intake side will need to be mill to fit the dowel pins. Use the correct size
drill bit for dowel pins.
After the two holes have been milled, make sure all metal shavings is removed. The B18b/a Non-VTEC head gasket will line up perfectly with the dowel holes moved.
This should be a very straight forward procedure.
External Oil sending lines
Cut the second SS lines about 10" to 12" inches long.
Make sure you use Teflon tape when connecting the 3 flare adapters
to the Tee and the 1/8BSPT adapter on the block.
As for the Oil pressure sensor, connect it to the end of the female Tee fittings as illustrated in the pix
There are many ways of doing this. You may seen other instructions on how to Tee the oil sending unit directly from the block.
But, I don't recommend Tee'ing the oil sending unit directly off the block. Doing this could break and snap the fittings under harsh engine shacks & jerks.
