I've been contiplating the next steps after the 5 speed install. I know for a fact that I want to install 2.5 inch exhaust onto my 12a and after that maybe solid motor mounts, a port job (bridgy) and upgrades of already existing systems like the radiator (fluidine) oil cooler (any suggestions?!) stainless steel oil line and such...lightened flywheel? Electric Fan.

What should I do after that to my engine bay?! Without going to turbo yet? Should I do anything internally other than porting that wouldn't upset the turbo install that may go on the car later?

Thanks for your input

(I wont go without suspension tweeking, but I already know what I'm going to do in that aspect.)

 

maybe fuel system (holley, weber, dellorto)

peace

 

definately look at carburators. that will probably be the next biggest power gain.

 

Wich ones are the best for a blow-thru system, tuning, power delivery, ect. ? What's too big? What kind of carbs are people running their blowthrus on?

I heard holley was good, but what about on a 12a?

How do I calculate Turbo size when the time comes?

So many questions

 

If you plan on bridge porting, forget about the turbo. Bridge ports need
little to No back pressure. Also, keep in mind the engine will not last very long,
considering the bridges will crack. Super chargers dont give back pressure.
If you are dead set on the turbo, street port! Also, if you have the cash to throw
around, buy a set of peripheal port(however you spell it) housings. A good carb with
peripheal port and headers will push 300 hp easily. With the oil cooler, get a pre 1983
oil cooler. Which is an air to oil cooler, instead of the water to oil which is on the 83
and on. With the better oil cooler you need either longer oil lines to mount the cooler
in front of the radiator or the pre 83 radiator, which is shorter than yours and the cooler
mounts under it.

 

Believe me, I understand your reasoning with the back pressure, but bridge-ported engines run just fine on a turbo. There is more than one example of that on this forum. It just requires a large turbine A/R to keep the backpressure low. Understand, with a rotary and its strong exhaust pulses turbine A/R can be very large before it becomes inefficient. In fact, I've heard that its very possible to have the manifold pressure greater than the back pressure, like an NA.