20b Fc Question's

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Old Feb 20, 2008 | 12:34 AM
  #1  
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20b Fc Question's

Well im wanting to do a 20b in my fc, I have a 88 base, I have searched and didnt find much that answers my questions, What will i need to mod, Can i use a 13b tranny, what driveshaft, were do i find motor mounts, crossmember, and all the good stuff to do the swap. And i will be able the money with my new job. So let me know. Thanks.
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Old Feb 20, 2008 | 12:50 AM
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http://fc3spro.com/TECH/SWAP/COSMO/20b.html
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Old Feb 20, 2008 | 01:15 AM
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got $30,000 laying around? :p
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Old Feb 20, 2008 | 01:27 AM
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Well i think that it would be a little easier then a turbo 20b, im wanting to do a built na 20b, instead of twins. Let me know what yall think. And no i can do this swap for less the 10,000 and labor on my part.

Last edited by fc3sdude; Feb 20, 2008 at 01:39 AM.
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Old Feb 20, 2008 | 03:19 AM
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Originally Posted by Havoc
this link and question needs to be added to the FAQ.
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Old Feb 20, 2008 | 03:50 AM
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Originally Posted by fc3sdude
No what, You don't have to be a dick.

That "dick" wrote the website that was in the 2nd post :p



If u know u can do it for 10 grand and u'll do the labor..

then what are u asking? it seems u know what to do then..


so u want to go high compression N/A with RX8 rotors?

not for 10grand sorry
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Old Feb 20, 2008 | 04:08 AM
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First of all, almost none of your stock drivetrain components will withstand the increased power.
We made 230hp and 190lb-ft at the wheels.
This will kill your stock, non-turbo transmission.
You can argue the stock rear diff will handle, but I would highly recommend to upgrade to a Turbo II rear diff.
The Turbo II transmission is pretty much required.
This means if you do keep your stock non-turbo rear diff, you'd need to get a custom driveshaft.
Unless you're going to baby the car, you're probably going to bust those stock non-turbo half shaft axles.
We're talking torque numbers getting close to 200 lb-ft at the wheels.
The non-turbo 13B has a hard time getting close to torque numbers like that.

Engine adapters are easy to find, so dropping the engine in is pretty straight-forward.
The engine should come with the proper rear counterweight, so you'd still need to get a clutch that can handle the increased power (i.e. torque).
Don't even bother with a non-turbo clutch...

How are you going to control everything?
Are you going to getto rig the stock ECU?
If not, that means going stand-alone EMS.
That's at least an easy grand there.

What about the front sway bar?
Contact patman to see if he still makes those adapters to use your stock sway bar.
Else, you gotta do something custom...

You gonna make that header yourself from scratch?
No one makes a mass-produced header that you can drop right in.
Most are one-off's or custom made...
You gonna take care of the rest of the exhaust yourself too?

Now, before you go mouthing off again, I'd recommend you really search properly.
There is a 20B subsection which should have all this info in it.
So, either you didn't do a proper search, or you're lying about searching in the first place.
With your attitude, I hope you get BANNED.


-Ted
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Old Feb 20, 2008 | 05:35 AM
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Originally Posted by fc3sdude
Well im wanting to do a 20b in my fc, I have a 88 base, I have searched and didnt find much that answers my questions, What will i need to mod, Can i use a 13b tranny, what driveshaft, were do i find motor mounts, crossmember, and all the good stuff to do the swap. And i will be able the money with my new job. So let me know. Thanks.
RETed's last post pretty well covers all the issues. The FAQ in the 20B sub-forum underneath the Rotary Performance forum will answer pretty much anything else. An alternative to undertaking all that work is to buy my car:

http://www.cris.com/~Asam/20B.html

for $29,500.
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Old Feb 20, 2008 | 11:48 AM
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Ok you act like i can't get most of these parts, i have a TII parts car it my shop, A custom header is nothing, i can get one made at a machine shop, A clutch is fine, I'm going to use the stock ECU, so that is a grand less, exhaust is nothing, like 100 bucks at a exhaust shop up the street, and yes i can make my own, i got a welder, a torch and pipe bender's. And no there wasn't anything on a NA 20b that is why i asked. And no thanks, i don't like body kits, or wide fenders. And who ever said about going high compression.
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Old Feb 20, 2008 | 11:57 AM
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well let us know how it turns out. good luck with that stock ecu with no turbos and no auto tranny.

Again, what are you even asking?

There is TONS of information on these swaps. If you can't figure out what you will need to mod because you are going NA while most go turbo, I don't think that you ought to be doing much of anything to your car.
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Old Feb 20, 2008 | 03:04 PM
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Originally Posted by fc3sdude
Ok you act like i can't get most of these parts, i have a TII parts car it my shop, A custom header is nothing, i can get one made at a machine shop, A clutch is fine, I'm going to use the stock ECU, so that is a grand less, exhaust is nothing, like 100 bucks at a exhaust shop up the street, and yes i can make my own, i got a welder, a torch and pipe bender's. And no there wasn't anything on a NA 20b that is why i asked. And no thanks, i don't like body kits, or wide fenders. And who ever said about going high compression.

you Can't use the stock ecu and harness sorry..
you forgot to mention Oil and water cooling needs with the bigger powerplant and assoc. heat


I dunno why'd u'd wanna go with a bone stock unopened unported 20B N/A setup

u'll be making around 230whp...

A bolt ons TII can do that for a Whole lot less money...

unless ur doing it for the "cool factor"


if you want a REAL N/A setup.. u should open it, change it to Rew housings, large street port RX8 rotors the whole works..

otherwise.. use ur Turbo II parts car swap it into urs.. and call it a day.. and make more power easier..
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Old Feb 20, 2008 | 04:46 PM
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Yeah i just have been looking into a na 20b, but seeing 13b-re are getting really cheap im thinking about that. And the hp wasn't a real concern stock, 230hp is fine, just that i wanted to do a na 20b, and i was going to build it i just didnt want to build it quickly, just for personal preference. And yeah i knew about the cooling and what not, i already have a koyo sitting aside.
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Old Feb 21, 2008 | 04:11 AM
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You've got one year from your first post...
363 days and counting...


-Ted
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Old Feb 21, 2008 | 08:08 PM
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Originally Posted by fc3sdude
And yeah i knew about the cooling and what not, i already have a koyo sitting aside.

Oh well, since you have a Koyo already I guess you are set for all your cooling issues... and what not...





good luck with that




7 days ago you didn't have money to get your car registered now you want to do a $15,000 swap. lol.

Originally Posted by fc3sdude
I hate knowing that my car runs fine, but i dont have the money to go and get registration, and my title transfered cause when i bought the car it didn't run.

Last edited by BLK FC3S; Feb 21, 2008 at 08:17 PM.
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Old Feb 21, 2008 | 10:15 PM
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Originally Posted by fc3sdude
Yeah i just have been looking into a na 20b, but seeing 13b-re are getting really cheap im thinking about that. And the hp wasn't a real concern stock, 230hp is fine, just that i wanted to do a na 20b, and i was going to build it i just didnt want to build it quickly, just for personal preference. And yeah i knew about the cooling and what not, i already have a koyo sitting aside.
A Koyo probably isn't going to get it done, and if you use 'off the shelf' ebay/banzai/whatever Cosmo mounts it will barely fit with the radiator mounted in the stock location. I had to bend my stock mounts ALOT then ended up scrapping the whole setup and making custom engine mounts as I wasn't happy with the clearance.

Everyone here telling you that it costs alot of money is doing it for a reason; I have about $55k in my car total, somewhere between $30-35k of which is related specifically to the 20B. Just like your car (well kind of like your car) it was a 13B NA motor before I did the swap.
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Old Feb 22, 2008 | 02:10 AM
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Well it really doesn't matter to me right now, i will just have to see what im going to do. And yeah I did say that i didn't have any money to get registration but seeing how i got a really really ******* good job for a 17 year old, i think that i can do almost what ever i really want to do to my car. So on that note i will stick with doing it, and finding out what to do, and what not by my self cause it doesn't seem like yall are helping. But thanks for the info i really appreciate it.
And i don't spend all of my life on the computer like some people.
7 years and 25, xxx post. That isn't really something to be proud of.
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Old Feb 22, 2008 | 04:57 AM
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Originally Posted by fc3sdude
Well it really doesn't matter to me right now, i will just have to see what im going to do. And yeah I did say that i didn't have any money to get registration but seeing how i got a really really ******* good job for a 17 year old, i think that i can do almost what ever i really want to do to my car. So on that note i will stick with doing it, and finding out what to do, and what not by my self cause it doesn't seem like yall are helping. But thanks for the info i really appreciate it.
And i don't spend all of my life on the computer like some people.
7 years and 25, xxx post. That isn't really something to be proud of.
Dude, you should've stopped when you were ahead...
****, you were never ahead.

I basically gave you the whole rundown on what you expect, and all you can do is try and insult me?
Try again...

So I guess we all basically wasted our time trying to help you out.
I should've gave you my standard answer to stupid questions like this:
NO.

10 years from now...
No, I'm give you too much credit.
20 years from now...you're going to look back on this (if you remember), and tell yourself how stupid you sound.
Unless you're a drug dealer making illegal money, the money you THINK you're making at your "really really ******* good job" is just chicken scratch for most people.
If you intend on sinking all of that hard earned cash into your car, then you're more stupid than you sound.

Come on, you've wasted another day.
You're down to 362 days now.
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Old Feb 22, 2008 | 05:12 AM
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Originally Posted by fc3sdude
So on that note i will stick with doing it, and finding out what to do, and what not by my self cause it doesn't seem like yall are helping.
I think you need to get off the drugs first. Good luck.
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Old Feb 22, 2008 | 01:56 PM
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Well i think that yall should **** off, i don't do drugs.
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Old Feb 22, 2008 | 02:02 PM
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I think the only useful post in this whole thread was #2.
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Old Feb 22, 2008 | 03:10 PM
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Originally Posted by fc3sdude
Well i think that yall should **** off, i don't do drugs.
I think this man is right. Come on guys, lets do as he says, and **** off. Because obviously none of our help is needed here.
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Old Feb 22, 2008 | 06:37 PM
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Originally Posted by thetech
I think the only useful post in this whole thread was #2.
That link isn't going to do him any good until he gets off the drugs and adjusts his attitude.

Originally Posted by GtoRx7
I think this man is right. Come on guys, lets do as he says, and **** off. Because obviously none of our help is needed here.
I am sure he will leave on his own and find one of those other internet car forums full of morons who will encourage him to pursue a completely ridiculous project. I doubt he will ever realize that this forum actually tried to help him, but it would be nice if he bucks the odds and does progress to that point sometime in his life.
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Old Feb 22, 2008 | 07:52 PM
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yeah, if he'd ever tried to wire up a stock 20b ecu WITHOUT the cosmo dash harness, he'd thank us all....

for the record, 20b stock ecu WITH a front clip and the wiring diagrams in the shop manual, is doable. get clip running, with no codes, and you're in great shape

the 20b stock ecu with just the engine harness, is a giant waste of time. with about 30 hours of translating japanese (hint: there are errors in the wiring diagrams), making wiring and finding connectors, it'll start and run, but have plenty of limp home error codes. that dont go away....

in that kinda time you can wire up, and be running with an e11, which once you get it 80% dialed in run just as nice as the stock ecu....
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Old Feb 23, 2008 | 10:31 AM
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Well you know i really appreciate it guy's really, i wanted to do something that i have been wanting to do forever and i get shot down like no other. But that is cool, i understand that fellow rx owners are trying to help me so i don't **** something up.
So i really do appreciate it. So on that note, i will be looking into something different, something less expensive. Thanks.
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Old Feb 23, 2008 | 11:38 AM
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a changed man lol
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