Drilling a second water fitting hole on the stock head?

[dmfelmlee]

Hey guys, I have the 89 650sx. I have a high compression head with two water fittings that gets 185psi and the factory kawasaki head with only one water fitting.
What i am trying to do is drill and tap a hole in the factory head to put another water fitting so i can still run duel cooling off the head. Does anyone have experience doing that?
The reason that I am ditching my high compression head is because I blow head gaskets all of the time with the high compression. I used a Kawasaki OEM gasket and sooner or later It leaks witch ends my riding for the day.

 

[JT_Freeride]

Try a thicker head gasket to lower the compression

 

[WB1994]

Get the head and cylinder decked. Thats why it eventually leaks. Its not the compresion doing it , its uneven surfaces. Ive had the same problem before. But yes , you can tap a stock head just like the aftermarket head.

 

[eastcoastjumper]

use the smaller size npt pipe tap and buy another brass fitting. put it over the other cylinder and youve got dual ports.