Getting My FD RX-7 Turbo Boost Pattern

I am changing exhaust on my 93 Mazda RX-7. This is the process of installing boost and mixture gages, and then recording the boost pattern.

Category:

Autos & Vehicles

Tags:

• RX-7
• turbo
• boost
• pattern
• FD
• autocross
• CNC
• machining

[fd797]

Assuming CAD software is of interest. It is CoCreate OneSpace Modeling.

[fd797]

Other than the exhaust, it is as Momma Mazda made it (wastegate size?, injectors are stock, and original engine). I did find an unplugged vacuum hose by the upper vacuum chamber, but don't find the other end.? I'm going to go through all the hoses soon to solve that mystery. I went ahead and bought a racing beat 16427 muffler, and plan to put in a cat.

BUT, I just blew up the clutch, so that's next...

[deanperea]

ya you need to just ditch the stock twins when you can thats what i need to do just am building 12 psi then when i get in to 3rd i get more load am runing 15 but have to shif at 6500 or so or it drops boost

[Millennmify]

I ported my '94 Rx7 turbo. Before: home.comcast.net/~servlet3/Rx7­/Port0.html After: home.comcast.net/~servlet3/Rx7­/Ported0.JPG I ported my turbo when I replaced my engine: home.comcast.net/~servlet3/Rx7­/EngineWorkPics.html You'll get the best advice from rx7club.com You'll blow your engine if you have a full exhaust with stock ECU and no boost controller. Get a rotary engine compression tester. New engines give up to 120 psi.

[skitt4president]

you wuldnt wanna swap that fd foe an fc wuld u???

[RotorDemon]

Should be 10PSI on the first turbo, 8PSI on the crossover then back to 10PSI on the secondary. I have never heard of an FD boost creeping with a full exhaust. If you are worried go grab a PowerFC. Oh and the boost dropping at high load/RPM is normal and typical due to the size of the turbochargers.

[johnm11690]

I know this video is kind of old, but I will try to help answer your questions... Replacing your muffler should not create boost creep in any situation... I am running a 3" turbo-back on my talon and have had no such issues. Boost creep is usually caused by a faulty wastegate (or sometimes perfectly good internal ones) your fd probably has a stock turbo, so it is most likely internally wastegated. So.... yes! get a muffler! fd's sound great... good luck!

[Wannabe000]

Nice video dude...

where did u find your car??

[FamousBenjii182]

good video dude! and great car ;)

[socamoto]

what software are you using?

[infectrus]

ilove the fd, and want one, but ill never be able to get one and enjoy it, being 6'4'' makes its suck.