Ok, I will be running full RB exhaust and an FCD. I planned on porting my wastegate to aviod boost creep, which i guess is overboost? My question was, boost creep is when there is too much boost in the turbo and not enough fuel to feed it right?? Could I avoid porting my wastegate and do something such as s-afc and walbro instead?? would this accomplish the same thing?? Any help would be greatley appreciated.
Thanks

 

I would recommend getting an 89+ turbo and manifold for your 87-88(can't tell which, but it looks like a series 4 from your pic) Those turbo's had a larger wastegate, hence less boost creep, and a better manifold with no twin scroll crap. That should do you fine. With a FCD, you should at least rewire your fuel pump +12VDC to be safe. What are your peak boost levels?

 

Think of how a turbo works - the exhaust gases spin up a turbine, which spins a compressor wheel, which throws air at a wall to compress it. You can regulate the speed of the turbine by bleeding off exhaust gases before it with a valve - that's the wastegate.

If the wastegate can't flow enough, you won't be able to control the turbo very well. If the wastegate maxes out, the boost level will creep upwards from where you want it. Some people live with this and just set the initial settings lower (less boost = less flow = less exhaust volume, more or less) and let the boost creep up to where they want it, but this is a halfass way of doing it and it sacrifices low-end response. Porting the wastegate (or getting a big external one) is the proper fix, as it allows you to control the turbo instead of just dealing with it.

 

Ok, thanks for the help guys. Now all i need is some instruction on removing my turbo, anyone??

 

That isn't all that hard to tell someone else, but I had to pull my motor to get at the heat treated bolts on the manifold

Are you removing the turbo or the turbo/manifold? For the turbo and manifold, just remove the 2 oil lines and the 2 coolant lines, then remove the 4 nuts that hold on the turbo manifold from the block. They are a PITA to get off if they are original to the car. They also have special lock washers to keep them on with all of the heat. If the heatshield is on, that will really make things bad. Also remove the DP and the piping to the intercooler. If you have a cherry picker, just pull the motor up above the car to make things easier. Good luck!