Wheres the best spot to put an oil feed line, i already have a t2 front cover for my oil drain but now i just need to figure out my oil feed situation.

 

Here is one way from Aaron Cake. The (Almost) Complete Guide To Turbocharging The Naturally Aspirated Second Generation RX-7 - Turbo Oiling System (aaroncake.net)

The factory location exists on the n/a front housing but isn't drilled or tapped for the fitting.

 

The "best" location is going to depend on what you have available, can do, are willing to do, etc.

Easiest is a T from the oil pressure sender. But sometimes it is hard to find the 1/8" BSP threaded parts if you don't have a good local hydraulic shop.

An oil filter pedestal is easy as it offers 1/8" NPT ports.

Could drill and tape the front iron but that's a big pain.

I've seen people drill and tap one of the oil cooler banjo bolts.

 

Do you know the thread pitch for the front housing?

 

M12 x 1.5 if I remember correctly.

 

Easiest method is to get a Racing Beat Oil Filter sandwich plate, then just run a custom line to the turbo. That way would also give you a location to install a sensor for an external oil pressure gauge, as the factory ones aren't the most reliable.

 

While I have no doubt that would work, wouldn't it mean you're providing the turbo with unfiltered oil? IIRC the oil cooler comes before the filter in the oil flow diagram.

 

Yep. Now whether or not this is a problem depends on how much metal shavings your oil pump is moving around.