Can someone please explain to me the differences between the 13B in the 2nd gen RX's and the 3rd gen RX's? I know the Twin Turbo setup is different, but is there anything else, meaning anything else in the engine?

 

The only parts they share are the eccentric shaft and (if youre comparing to an 89-91 13BT) the rotors. EVERYTHING else is different...wiring, manifolds, ports size and shape, irons, rotorhousings, turbo setup, ignition, crank angle sensors, motor mounts, oilpan, everything.

 

Don't bother - it's too much headache to install.
If you insist on doing it...
http://fc3spro.com/TECH/SWAP/FD3S/rew.html


-Ted

 

I hadn't planned on a swap or anything, I was just curious to the differences. Would it be possible to put sequential turbos on an FC without it being too much of a headache?

 

Sequentials on an FD (with the proper electronic controls) are a total PIA and often hard to get working properly due to all those broken control solenoids. Transplanting them into an FC or other car without the original controls would be even harder. You can make the same, or more power from a single than you can twins.

Why do you think so many FD owners go non sequential, or single?

 

Well, what effect would it be to put a turbo the size that most FD owners put on their car on an FC? And what size is the most common when FD's go single turbo?

 

The FD twin-turbos do not fit - you'll need a spacer to clear the lower intake manifold.

Common single turbo options are...
Garrett 60-1 or T04E "60"
Garrett TS04
Garrett GT35R
Garrett GT40R
Mitsubishi T78
A'PEXi IHI RX6
Blitz KKK K26


-Ted

 

The question is, would those turbo's bolt up to an FC manifold? Or what would it take to get it to? I'm just looking to get the most power out of my FC as humanly possible. I'm already getting a turbo-back Racing Beat exhaust system, fuel cut controller, and manual boost controller. After all that, I'm going to get a front mount and CF Hood. I think after I get all of that, that's when I'm going to upgrade the turbo. I'm hoping to be able to get as big of a turbo as possible to fit on my car.

 

Uhm, perhaps there are reading comprehension problems at hand here. Let's try this again.

NOTHING from the stock FD engine will bolt up to the FC engine and work in the FC chassis.

There, is that better?

IF you would, bear with me here...

FD owners ditch the twins in favor of a big single when they want power and reliability. These single setups are completely custom. Since the setup is completely custom anyway, you can pretty much make anything within reason work.

FC owners ditch the stock turbo in favor of a bigger single when they want power. These single setups are completely custom. Since the setup is completely custom anyway, you can pretty much make anything within reason work.

DO you see a pattern here?

There are minor fitment issues to be aware of between the two, but in general either turbo works equally well on either engine...but it is always CUSTOM, and does not just BOLT UP to any stock manifolds, etc.

 

Ok dude do you understand what your shooting for? Kevin already answered most of your questions but you need to udnerstand that there is going to be a lot of work and money to do anything in the "high" HP range. Most people think my goal is rather tame in comparisson to the "high" hp cars. My goal is 400hp at the rear wheels. My budget is roughly 6k dollars per year for three years. Thats 18k dollars to complete the car. Are you willing to spend a comperable amount of money for your car? It may not take 3 years to do but with my monetary constraints it will take that long. I guess if your a rich boy you can just ask mom and d ad for cash and take it to a shop. From your profile your 17 or 18 so I doubt you have a GREAT job. I guess all we can do is wish you good luck.

 

None of those bare turbos will fit the stock manifold.

Some of them come in "kit" form, and they start at $3,000 and go up.  Add another $1,000 for fuel upgrades, and another $1,000 for FMIC...and you get something that will do 400hp all day long.


-Ted

 

Well, I'm not a rich kid by a long shot, and my parents have very little money. Actually, my mother can't spend money on me for having to take care of my dad's nursing home bills. And you're right. I am a 17 year old and I don't have a great job. I'm not looking for immediate power at my fingertips. I'm just trying to learn my car and the FD more than anything.

Would it honestly take 18k to get 400 rwhp? See, I'm just completely inexperienced with an RX, which I'm not afraid to admit. That's why I'm here, to learn about my car. I figured, "hey, this is an RX7 forum. These guys should know what's goin on." And I believe 100 percent that I'm right about that. I just think you ought to give me a little credit for getting on here and trying to learn.

 

You need to read this...
http://fc3spro.com/TECH/FM2W/power.htm



-Ted

 

I was simply stating that some kids get everything from their parents without any struggle or questioning of what they are doing for the kid. But my list is including just about everything you can get without going insane on the modifications. Engine rebuilds, turbo upgrad, EMS, upgraded ignition and fuel components, upgraded and replaced suspension components, safety epuipment, new paint, tunning costs, etc. I am trying to not skimp on anything so I can have a really nice and fast car for when I want it. It will be a weekend car/drag racer/autox'er with a little bit of restoration(read: stock) look. A bunch of other things werent mentioned in this paragraph but those are the big ticket items.


Santiago