20b NA?

[NOPSTNS]

anyone kno what one of these bad boys cost? havin trouble finidng a supplier...

just curious

[95nracer]

20b na? I've only known them to come from Cosmo and they where turbo. I know someone on teamfc3s.org (Bcool) was running one na and he was close to 250 to the wheels.


About the only guy I know that does a compression test on them before he sends them out and/or honest on what he sells is Japan2LA on RX7club.com.


http://www.rx7club.com/showthread.php?t=678482
http://www.rx7club.com/showthread.php?t=682588


Edit: I know someone local who could get them if your really interested.

[Dave]

frank just sell a kidney already and buy one of those 20k one off 4-rotor eccentric shafts from new zealand. you KNOW you want to. its JUST a kidney

[Epic Tuning]

I believe there is no such thing from the factory just the one from the cozmo. Building them for na make nice power though.

[Shawn@R/Ttuning]

Pmed ya.......

[Buster]

Would it really be worth it to spend that money when you could go turbo?

[NOPSTNS]

im opening my options for when the engine looses compression. i wouldnt swap out a perfectly good engine for no reason!

shawn i got ur pm, ill hit ya back, i gotta call yas tonight anyway to set an apt for my bro to get his car tuned

[NOPSTNS]

wow...screw na.....

[FlashFive]

wow...screw na.....

:iagree:

[Sphinx]

Ha, Expect a **** load of power. The regular TT 20B out of a cosmo is 450 rwhp. I know that 3 rotors can be ported and achieve that hp N/a. A 20B is alot of money but definetly cheaper for you than me haha. It will however throw off the weight distrubution quite a bit (assume you go turbo). I'd go for a nice conservative medium 64 mm or so turbo on that and gun for a nice tune around 600 rwhp or so. You might be able to go alot higher depending on the port and seal size.

[Sphinx]

God's engine ~http://www.rx7club.com/image.php?u=84032&dateline=1182690479&type=profile

[NOPSTNS]

um, i have the most conservative goals ever when it coems to hp man. i want like 300whp. i kno a guy whoi ran the 3 mm seals and he was unhappy with them, he was sayin hopw he couldnt ever get em to make good compression. hes returnin to 2 mm for his next build

the cosmo engine was a tt? it wasnt sequential was it? i hope not...i got a pic i want ya to see, lemme kno what ya think... i was hopin to keep as much of the engine behind the front struts as possible, this guy did just that

btw that last link doesnt show anything

[Dave 88 A.E]

Yeah the 20b had a sequential setup on it like the rew and re.

I want to build a 20b for my fb if the 13b ever dies. series 5 na rotors(high comp), peri port, ITB's. thing should scream and eat most cars on the road.

Then again it can just be a pipe dream since I have my 10th Anny fc and then save up enough money so I can do the 20b swap all at once

[NOPSTNS]

sequential huh, i was afraid of that....i read that on the IM and hoped it not to be true...ive messed with an FD at work doing the fuel line recall.....are there THAT many vaccuum hoses on the 20bs as well? i almost killed myself

whats the comp on those rotors? are they higher than 10:1, i cant imagine it being more than that....wouldnt renesis rotors be better since they are 10:1 and the lightest in stock trim?

ill sell ya mine once it pops! im just counting the days until it does....!

[antman0408]

s5 na rotors are 9.7:1. Cant use renesis rotors in 13b's

[NOPSTNS]

u cant use em in older 13b's? bc of the additional oil seal? the flank cut? what?

"i confused"

"shut ur hole wang chung"

[antman0408]

http://www.rx7club.com/showthread.php?t=685651

[NOPSTNS]

very interesting read!.....ill be reading that a few more times! good stuff bro

[rotarychainsaw]

NA 3 rotor was my original dream. I know that one pport NA 20b made me green with envy. Dragons pport 20b (http://www.nopistons.com/forums/index.php?showtopic=50271)
I thought that guy dragon built that car, but I guess he bought it like that and redid it? either way, my dream setup.

[NOPSTNS]

thats what i was thinking man, PP with ITB lightweight flywheel, decent clutch and exhaust, thatd be pretty decent. i was shooting for a 20b na to make maybe 350 hp with the above mentioned setup. add that power to the insanse sound of it and id be pretty unique.\

i kno the three rotor rx8s they run in rolex make 450 hp and they run pretty well. qualified 2,4, and 8 i thinm in the next race comin up....all three rx8s in the top 10 aint bad.

then i saw the turbo 20bs makin like 900 hp without breakin a sweat and was like o my.

btw linky no work, error found

[Dave]

you dont need 900 hp frank ;)

[NOPSTNS]

hell no, i just thought it was cool!

300 is fun enouhg in the 8, well, maybe 350.....er....375....no


400....yeah 400, thats all

[SayNoToPistons]

Just contact KDR, Pettit, or the other famous rotary shops. I bet they can hook you up if you have the money.

[rotarychainsaw]

My link didn't work? Hmm, maybe you have to sign up for nopistons or something. Let me see if I can attach a good picture...

[Dave 88 A.E]

My link didn't work? Hmm, maybe you have to sign up for nopistons or something. Let me see if I can attach a good picture...

Yeah you have to sign up on nopistons to see the thread. They have the best technical section of all the rotary boards I go to. But damn it has been a long time since i have been on that forum.

[NOPSTNS]

rotarychainsaw...that pic is beautiful...its like, id carry that pic around and show it off like its a firstborn son or something.....

ITB? PP? high five!

[95nracer]

LoL.. Just do it up Frank! For get the carbon hood and go for this!

[NOPSTNS]

if it cost the same as a cf hood, then yeah id rather have a 20b na pp itb.

but....

im not gonna do either so o well....