83turbo

You should be able to use the stock TII downpipe - the other option is to get a Racing Beat downpipe. You will still need to do a little fabrication to connect it up to you existing exhaust. I had the RB pipe years ago when I started playing with turbos and it fit the FB just fine, so I assume the stock piece would fit.

You need to drill and tap your front cover for an oil return. The front cover I used already had a boss cast into it in just the right spot - not sure if they all do. You can plumb the oil line to numerous places: one of those racing beat gauge adapters, or modify the filter pedestal, or drill and tap the front side housing.

The water fittings on the turbo are pretty optional - good for longevity, but not essential to run.

Given the age of the car, and the wimpiness of the stock fuel pump wiring, you will need to run a wire from the battery, to a fuse, to a relay located near the fuel pump. Use the stock fuel pump wire to operate the relay - all the current for the pump will come straight from the battery. Actually this mod goes for any performance setup, not just turbo. Try to find an automotive relay with the matching plug. Quick disconnect terminals fit, but tend to get loose and hot, and can actually melt the relay (been there).

Racing Beat says that street porting is beneficial to engine life - somehow the little stock ports are a problem. Plus it'll add some good power and turbo response.

Probably not 100% necessary, but if you come across a 17 mm oil pump, use it. It's really the GSL-SE pump, but I've seen it stock in '85 12A engines.

nopistons94

alright, i thought to my understanding that the manifold off the turbo 2 wouldnt work, but they make cheap manifolds for the 12a anyway that i can just get. Now i have the racing beat cat replacment pipe, could that be ued as a mid pipe kind of deal and i can just attach a downpipe to that replacment pipe i bought ? that would be the best deal for it.

83turbo

I'm almost positive you can modify the 13B manifold for the 12A - oval the mounting holes inward, then put a 12A gasket on it to check exhaust port alignment

and grind the manifold as necessary. Again the problem you will have is that the

turbo will likely hit your intake manifold and need to be spaced either with header

flanges or a custom made spacer to space the turbo away from the exhaust

manifold (I had this problem with my 13B using other than a TII intake).

If you don't use the TII manifold, the TII downpipe may not work - it all depends

on the manifold.

You should be able to tie into your cat replacement pipe, but will need a reducer. The TII downpipe is larger than the cat pipe.