i have a jdm d15b and this side^^ of the fitting that gos into the oil line fits perfectly into my block. the side thats supposed to fit in my oil feed position doesn't. i got a two-sided thread with both ends looking like what is cirlced above and it fits perfectly, not loose. is this normal in a jdm block?
thanks in advance.

 

The tapered end of the fitting is for your hose end. The hose end won't go onto anything but the tapered side.

 

Dam chris, that is a small pic :-)
When is your setup going to be ready for tuning ?