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20B/3 Rotor Conversion.. All things to do with 20B/3 rotor... Post pics, video, tech, etc..


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Old 05-10-2008, 09:05 PM   #1
BLK FC3S
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Default My swap thread.

I found the car for sale on teamfc3s. I drove down to pick it up in Venice, FL. It was parked here...


and had a blown this...


also had fuel running into the cabin of the car to a gauge here...

bad bad.

Seats were torn and had a dent in the back above the passenger tailight. I made a new offer and the guy took it. I rented a trailor and took it straight to my mechanic's shop.






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Old 05-10-2008, 09:20 PM   #2
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I was going to rebuild the 13bt and call it a day, maybe do a full restore on the car but after tearing down the engine we found almost nothing was usable. So then I started looking at options.
Option#1

Option #2


but neither of these 2 would satisfy me. I would always be wanting more. So I told him, go all out and get me the big dog. Thats right, 20B time! So not even a week goes by and my car looks like this...

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Old 05-10-2008, 09:29 PM   #3
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So now the 20B is bolted up and wired up to the Microtech ltx12s. Intercooler bolted in a piping welded up. All that is left is to turn the key....so we did...

Now what? Get it tuned of coarse..

366 hp and 357 tq and I was happy. For now.
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Old 05-10-2008, 09:39 PM   #4
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Now it is running strong and keeping me happy for a little while. Now I need to keep my car happy so what else would a car want but a good wax and a small photoshoot. After all, it was under a TARP for a year. I also had to make excuses to my wife why the grass was dead in one spot about the same size as my car.




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Old 05-10-2008, 09:48 PM   #5
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After driving it for awhile I had some problems with keeping the engine cool at high speeds, above 75mph to be exact. I blamed two things, 1st I kept A/C so with the added FMIC and bigger engine, I wasn't getting enough airflow across the radiator. 2nd, the tune was too lean and causing excess heat at cruising speeds.
The fix: -Cut a new opening in the front bumper ( I didn't want to do it but I had too)

-Get a new tune

New numbers dropped to 320hp 301 tq
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Old 05-10-2008, 09:55 PM   #6
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This is where it is at today...

and where it lives at now, she is much happier...
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Old 05-11-2008, 12:21 AM   #7
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Old 05-11-2008, 03:04 AM   #8
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very sweet. Love the stock look.
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Old 05-13-2008, 12:54 PM   #9
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Definitely love that car. I love white S5's. They make the car look so clean, and then adding a 20B under the hood and you've got the ultimate car.
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Old 05-26-2008, 11:33 AM   #10
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Where do you live? I know someone in louisville that also goes by blk fc3s and was wondering if you were the same guy by any chance, though it doesnt quite seem like it, i would die to see a 3 rotor in person.
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Old 05-26-2008, 01:02 PM   #11
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I approve of everything related to that car.

Do you have the undertray? If not, that will mess with your high speed cooling.
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Old 06-21-2008, 12:13 PM   #12
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Where do you live?
Central FL


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I approve of everything related to that car.

Do you have the undertray? If not, that will mess with your high speed cooling.
I have the undertray it just doesn't fit anymore after the mods needed for the 20B. I had to cut an opening in the front bumper to aid in highway driving.
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Old 10-24-2008, 11:49 PM   #13
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Duuude that car is f@#*king great. I'm wondering how and if you changed it to stick. Since 3 rotor motors where all automatic, I think???? Anyway I love your car. I also wonder how you got that expensive 20b past the Mrs....... Good Job!!!!!!
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Old 11-06-2008, 07:55 PM   #14
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I'm wondering how and if you changed it to stick. Since 3 rotor motors where all automatic, I think????
Yes, all 20B cosmo's were automatic. Good thing the TII tranny bolts right up to it. So would a third gen tranny.

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I also wonder how you got that expensive 20b past the Mrs....... Good Job!!!!!!
I bought her a car first. She was happy.
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Old 11-06-2008, 10:09 PM   #15
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that car is gorgeous dude. nice find. well done.
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