RX7Club.com - Mazda RX7 Forum

RX7Club.com - Mazda RX7 Forum (https://www.rx7club.com/)
-   2nd Generation Specific (1986-1992) (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/)
-   -   8,000 RPM for turbo swap (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/8-000-rpm-turbo-swap-984225/)

Valkyrie 01-18-12 06:46 AM

8,000 RPM for turbo swap
 
If I do a turbo at some point, is there something I can do that will make revving to 8,000 on a 13B worthwhile? Street porting? 3" exhaust? Cone intake? Boost controller? Or will it take a different turbo?

It seems like such a waste to have such a nice 8,000 redline and not be able to use it...hehehe

SirCygnus 01-18-12 07:10 AM

well, at that speed, the turbo has lost steam. most likely if you want boost and power to still be coming on at 8k rpms, then you will need a bigger turbo, but the lag will be killer. if you want, just rev it to 8k.

RotaryEvolution 01-18-12 09:27 AM

depends on the setup, porting and turbo, i have put together plenty of setups that didn't taper off boost or power before 8k.

Valkyrie 01-18-12 11:20 PM


Originally Posted by SirCygnus (Post 10941643)
well, at that speed, the turbo has lost steam. most likely if you want boost and power to still be coming on at 8k rpms, then you will need a bigger turbo, but the lag will be killer. if you want, just rev it to 8k.

I'm not going to rev it that high if the power drops after 7,000... but it just feels like a step back to lower your redline.


Originally Posted by Karack (Post 10941738)
depends on the setup, porting and turbo, i have put together plenty of setups that didn't taper off boost or power before 8k.

Can it be done with stock turbo? What about stock ports and turbo?

RotaryEvolution 01-18-12 11:51 PM

no

Valkyrie 01-19-12 12:53 AM

Not with a street port on a stock turbo and increased boost? Also with a 3" exhaust and cone filter.

I know it sounds silly and all, but I figure if the rotary can rev so easily and can take over 8,000, you might as well use it.

RotaryEvolution 01-19-12 12:55 AM

the turbine is still restrictive, if you modify the turbine housing then maybe.

RotaryRocket88 01-19-12 01:02 AM

As stated, the turbo is the main restriction. Torque and boost take a nose dive beyond 7k RPM.

Valkyrie 01-19-12 01:28 AM


Originally Posted by Karack (Post 10942994)
the turbine is still restrictive, if you modify the turbine housing then maybe.

Oh, okay. Hybrid I guess.

Thanks!

Valkyrie 01-19-12 01:32 AM

Maybe I'll just print out a transparent overlay that makes the 7,000 to 8,000 a half-redline like on the FD or GT-R...hehe

RotaryEvolution 01-19-12 10:36 AM

that is how the stock 2nd gen turbos are anyways, unless i'm losing my mind all 2nd gen turbos had an 8k peak with 7k redline.

LoLsmileyFC 01-20-12 11:34 AM

if you have a s4 turbo port match the ports and remove the flapper on the manifold. seems like the more you remove on these cars the faster they get.


All times are GMT -5. The time now is 11:10 AM.


© 2024 MH Sub I, LLC dba Internet Brands