fcturbo2

Im just wondering how hard to do this conversion on my 87TII and the benefits of doing this mod. WHat things i will need for the conversion. I was told by HN (member) that i will need the 89+ lower intake manifold. I have a lower manifold off a JSPEC motor so its not a problem.

Anyone done or have a link to this mod??..i would appreciate it guys!

Kurgan

The process includes swapping the throttle body and TPS as well. I dont know if your stock ecu will work with the 3rd gen TPS, but I would guess that it would not.

Plus, your stock top mount intercooler will not bolt onto this manifold, so you will have to rig something or go with a front mount.

Also, you will have to port match the lower intake manifold to match the intake runners on the FD upper intake manifold.

One more thing, those FD upper intakes aren't too cheap. There is not need to go with one of these unless you are pushing a lot of horses...

my 2 cents

fcturbo2

I got the intercooler,TPS,&ECU taken' care of. For ECU and TPS i will be using HALTECH E6K. As for the intercooler, Im having my NPR FMIC customized as we speak. How hard is it to port match my lower intake manifold to match the 3rd gen upper manifold?..

zyounker

It is not very hard to port match.. You also have to round out the holes on the 3rd gen intake.. it is the to middle ones. but not the very center..

The reason people do this is to help with the flow on the intercooler & make the pipes not so zig zag like..


-Zach

fcturbo2

Besides match porting the intake manifold ports is the conversion pretty much straightforward???

kabooski

I just bought a 3rd gen manifold
your saying it wont be possible to mount on a 88 lower manifold
only 89+ ????

How is soul assasin using the whole 3rd manifold on his FC
he said he had some custom work done??

but won't explain

phinsn98

iTrader: (2)

The answer is that you need a 89-91 plus lower intake manifold and a 3rd gen upper manifold. One of the manifolds I am not sure if it is the lower or the upper needs to be slotted and the ports need to be matched and then it will work. You need to use a 3rd gen throttle cable. From what I understand the 87-88 oil metering system will not work with this because something gets in the way. You can either fix the oil metering system partially open or run pre-mix. I was one of the first to see this here in the states. About two years ago a buddy of mine pulled up with his second gen. He opened the hood and what did I see? A powder coated red 3rd gen intake with all the piping. If you would like to have someone do it for you contact Japtrix in South Florida. www.japtrix.com

They have a low ten second Turbo II with this mod done to it.

Hope this helps...one thing to remember is that it is recommended that you go with a bigger turbo because this mod flows alot more air. You will need a aftermarket ECU ala Haltech.

Later,
Dave

fcturbo2

hmmm I have an 89+ lower manifold off my old Jspec motor. Im going bigger turbo and im going to delete my METERING OIL PUMP. Haltech is hidden somewhere in my closet. SO i guess all i need is to look for all the 3rd gen stuff to do the mod. Can somebody list the things i have to look for such as 3rd gen upper intake manifold, throttle cable, throttle body???gaskets???

13BAce

You'll need the 93 upper and TB. You may want to get a new upper to TB gasket. You can use your throttle cable, but you'll just need to move it around a bit. You'll also need an elbow to go onto the TB. You could use a stock elbow, but the Greddy elbow would be a much better option.

Scott 89t2

I'm pretty sure he's not using a 13BT.... either RE cosmo or REW.

13BAce

He's using a 13BT lower with a 3rd gen upper on a 13BT motor.

Sebring7

What's up Jeff! How ya been? Good to see you're still wanting to finish your TII sometime by next year :P

About the FD intake: Soul assasin did this conversion, so he should know all the specifics. PM him.

Node

iTrader: (1)

i dont think he has a rew, but who knows

fcturbo2

I went to junkyard today to look for the 3rd gen manifold but no luck.

RX-7 GT

soul assassin uses a 13bt motor, fd/rew upper intake w/ panspeed elbow. he had garage vanna i think it was do the work to make it fit. and his motor is 89+ 13bt

the work the shop did is what zyounker did, bore out the fd's upper intake holes to fit the studs on the fc's lower, and port match the intake runners.

Scott 89t2

how the h*ll is he making 500+ HP on a 13bt, they should break around 400, he must have some crazy dowels and tension bolts.

he was also running a power FC which is only for 3rd gen...

kabooski

3rd gen motors are weaker then 2nd gen (I don't mean HP weaK
reliability weak)

RX-7 GT

where did you read they can only take 500hp? gran turismo 3?lol

Scott 89t2

no, 3rd gens have stonger housings and dowels. 2nd gen ones will twist apart with high HP.

TurboII RudeBoy

his power fc is for an fc they make em in japan for second gens,
and second gens properly reinforced can make 600 hp my friend n brooklyn had one years ago then he sold the motor to sum guy in puerto rico

kabooski

well from posting's (forum) to several rx7 shops here
there are more 3rd gens with blown motors
most everyone that works on 7's will tell you 3rd gen motors ARE less reliable then 2nd gen

soul assassin

well elt me clear this up for ya! i am running a 13BT with FD upper and t.b. with a panspeed elbow. the manifold i bought was from garage vanna and you send them your stock lower intake mani and they send you a lower mani already set up to bolt in but you still have to do some custom fab stuff, you need to run a FD throttle cable so you need the bracket of the FD also but you will need to drill new holes in it to get it to mount right with the right amount of tension, also the big pain is the oil filler neck it is to tall to use with the FD mani if you put a rew and bt side by side you will see the neck is about 2-3 inches longer so that big tube that come to the front of the engine where yuo put oil will not fit you need to make a plate and new tube to bolt on the lower housing. you will also need to notch out the lower part of the upper manifold to clear the injector rails, and last but not least you can't use a FC or FD engine torque dampner they won't fit so you have to custom make one, i think that is about it for custom fab stuff, you need to splice the new tps in with the old tps wiring i doubt that you can do it with a stock computer. it is about of little things that add up to make it a pretty big project.
as for the hp issue
they DO make power FC's for FC'S here in japan, i no longer us one i went with HKS FCON V PRO (gold one) my moter is not doweled or have titanium apex seals, it all has to do with tuning all those things are tuning crutches because they don't know how to tune i am running low comp zenki rotors with FD housing and stock 3pc apex seals that have been WPC'D this motor is good for 600rwhp and 10 grand on the tach. also can handle 30 psi of boost haven't tuned that high yet since it is still inda new wanna get some passes on it with 25 psi and see how it does right now it is at 520 rwhp
hope this helps some i will kee an eye on this thread to ttry and answer anymore questions

Scott 89t2

how can you call it a 13bt if you are running fd housings?

VetteKiller

When Racing beat did their 244mph Bonneville saltflats car it had 530hp I believe.

Scott 89t2

I'm not talking about blowing apex seals I'm talking about twisting the engine apart from shear power. stock for stock the 3rd gen engines are more reinforced to prevent this. as quoted from Brain d Cain. "they break in the oil filter stand area where the tubular dowel pin is as well as the oil feed to the turbocharger where the dowel pin is. The iron there isn't very thick and is the first to crack and then shatter."

someone posted just a few weeks ago that their moded 13bt was leaking by the oil filter between the housings which ment that they were now broken.