13b n/a build
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From: Utsh
13b n/a build
Hello every one I have a few questions about my build, I am planning on keeping my engine N/A I have turbo 2 upper and lower intake I'm buying a 90m cnc billet throttle body, I'm planning up buying bigger studs and solid dowels, I'm bridge porting the motor this winter and porting the exhaust port, and buying 1600 cc injectors along with a haltech ecu 1500+ I'm sorta new to building na rotaries I would like some help and opinion on what I should do my plans is to be around 350, to 400 hp
Agreed. Not many people do NA builds due to the high cost and relatively low gains in comparison to turbo. Ask me, I know. There are a few methods to making NA power, and I'll highlight what I believe to be true based on my engine setups.
1. Individual throttle bodies (ITB'S) with a standalone ECU on a stock port 13B:
-Good for around 170 WHP with a decent exhaust, intake manifold, tune, and around 2000cc of fueling capability.
-A large street port or decent bridgeport could net you around 220 WHP.
-My cost for this setup, not including parts I already had or tuning: ~1700.00.
-I have no experience with Holley 4 barrel setups, but @peejay would have insight on those. I do know they are much cheaper than ITB's.
2. Peripheral Port
-Good for 230 WHP- 300 WHP (this all depends on the quality of the build, port sizing, port timing, throttle body size and a very free flowing exhaust). For reference, my current peripheral port makes ~270 WHP.
-Completely custom built engine where you'll need throttle bodies, a custom intake manifold or Racing Beat manifold, a larger fuel pump, around 3400cc of fueling capability. (I'm using 2x 1700cc injectors)
-Cost for the build alone is insanely high, unless you back yard build it with a hole saw.
If your goals are higher and you want to stay NA with a bridgeport, you will need to add more rotors. There's a limit to a 2 rotor NA engine. If you want some pointers or would like to see what's required for the power levels I've mentioned, my build thread is in this section and is titled "the indecisive and slow s4 build."
Also, Mods may want to move this thread.
1. Individual throttle bodies (ITB'S) with a standalone ECU on a stock port 13B:
-Good for around 170 WHP with a decent exhaust, intake manifold, tune, and around 2000cc of fueling capability.
-A large street port or decent bridgeport could net you around 220 WHP.
-My cost for this setup, not including parts I already had or tuning: ~1700.00.
-I have no experience with Holley 4 barrel setups, but @peejay would have insight on those. I do know they are much cheaper than ITB's.
2. Peripheral Port
-Good for 230 WHP- 300 WHP (this all depends on the quality of the build, port sizing, port timing, throttle body size and a very free flowing exhaust). For reference, my current peripheral port makes ~270 WHP.
-Completely custom built engine where you'll need throttle bodies, a custom intake manifold or Racing Beat manifold, a larger fuel pump, around 3400cc of fueling capability. (I'm using 2x 1700cc injectors)
-Cost for the build alone is insanely high, unless you back yard build it with a hole saw.
If your goals are higher and you want to stay NA with a bridgeport, you will need to add more rotors. There's a limit to a 2 rotor NA engine. If you want some pointers or would like to see what's required for the power levels I've mentioned, my build thread is in this section and is titled "the indecisive and slow s4 build."
Also, Mods may want to move this thread.
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