What is the best twin turbo set up for 500-600 hp. can the 99 spec twin handle that much boost

 

No, not even close. If you want to make 500 (motor) hp on twins, click the dyno video link in my signature, then send me a PM if interested. They're for sale

 

your selling your stage 3s?!

 

ha ah ha, 500 hp on 99s. lol, if you break 400 whp your doing very very stellar.

 

Then is there a twin set up that can make that 500 number

 

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/new-twin-masterpower-600whp-project-13b-556737/

Try something like that. You pretty much have to make your own set-up for that much power.... There have been a few twin T4 FD's and some smaller GT series twin turbo set-ups that have been posted on the forum recently. Try searching for "custom twin" and you should find some good stuff. I did a quick browse and found some more threads that discuss custom twin set-ups:

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/my-independent-twin-turbo-project-finished-pics-395909/

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/what-do-you-guys-think-about-fd-twin-t66s-199801/


And there's more. Just search.

 

i think 2 GT28 RS turbos would be perfect match for the 13b. should spool fast, with gobbs of power.

 

lol go TO4Z's as twin that would be insane, but be carful of the delicate rotors

 

Uh..yeah. Have fun spooling 2 TO4Z's without a full bridge or Peri port..even then..meh.

 

The BNR3s are similar to a plain bearing version of this.

 

If you wanted to go total custom, you can be (probably the first on an FD) to try series sequential, where the compressor side of one turbo is directly hooked up into the intake of the next turbo. That would probably yield a huge amount of power.

 

?? umm i dunno, what are the specs of the BRNs? the gt28rs are capable of 400+hp each.

 

ohh right... forgot about these. ive seen them before on a mustang... looks crazy, and the funny thing is the turbos themselves spool each other. the exhaust are also interconnected.... the first turbo the exhaust hits compresses air that pushes first through the second turbo, then exhaust comes out the exit and enters the second turbo, which spools more air.. nice concept indeed... i think they were extremely effiecient.

 

Didn't RX7 Store used to have a twin turbo kit? What ever happened to it?

 

It's still there I think, for like $5k IIRC.

 

Yup, but the stock exhaust manifold isn't capable of 800 hp

 

Here is a guy with a twin turbo set up:
http://www.xs-engineering.com/carsforsale.asp?filter=10

 

^^ damn, $27 k is a steal for that thing... 710whp... lets ee, if i sell my FD and audi s4, i could buy that and have enough left over for a cheap mid 90s 3-series BMW... hmmm.