For future reference...

I am removing the heater system from my RR EG Civic with a B18C5. I am also removing the factory oil cooler. So I was trying to find a way to properly eliminate the cooler lines and heater lines. I finally found factory plugs to block off two of the spots. The hard one to find was for the heater outlet from the head, underneath the distributor, as it is 20mmx1.0 thread. But I managed to finally find one.

<U>To plug water outlet on side of head</U>.

Honda part#: 11106-PNA-300 plug, sealing

Some other handy part#'s when doing this.

<U>To plug oil cooler return line in block.</U>

Honda part#: 90083-PG1-000 plug, sealing.

I am still trying to find a water crossover tube (water pump to thermostat housing) that does not have any additional outlets on it. I will probably have to just weld up the one that I have.

Additionally, to seal up the one unused water outlet in the thermostat housing, I heated and pulled out the hose nipple, and then threaded hole with an 18mm tap and used the sealing plug from a K-series motor that is removed when installing a block heater. (directly above the oil filter housing)