jiggy410

i have a quick ?? about my RPM reading....

i have a 91 323 protoge however the engine has a big KIA in the middle of it...

heres the lowdown:

-1st gear i can get up to 10mph while my RPM reads 3000

-2nd- about 22MPH and the rpm is 3000

-3rd, 40 mph and 3000 RPM

-4th, 50 MPH and 3000RPM

-5th, about 68MPH give or take and 3000RPM...and i usually shift on 3000 RPMs

im not sure if all this is good or bad because when i get to 3000RPM it feels like i should shift gears?????

can some tell me

slayer4u

sohc or dohc? those gear ranges are about right for the se tranny.

jiggy410

Dohc 16v

midnightblue97

Thats about right.

jiggy410

so will i damage it if i shift at 5000RPM(the redline is 700 or 75) cause it really sounds the engine might blow or something...

slayer4u

It won't kill it bu I usually shift a 4000

kargoboy

If the engine has been well cared for, I'd be shifting at 5500-6000. You might need a clutch sooner than later, but it won't hurt the engine. You will get the most power out of your engine if you shift above 4000.

Gen1GT

Dude, shift at redline. It's what the Mazda engineers put a redline there for. They built the engine and with much testing and evaluation decided that the highest reliable RPM the BP-ZE should see is 7300RPM, which is where they put the rev limiter. If your engine says Kia, then it's a BP-DE, with 122hp(Mazda made engines for Kia). I'm not sure if they lowered the redline, but whatever it is, that's where you want to shift if you want to drive fast. Trust me, the engine can handle it. My car goes 60kph in 1st, 100kph in 2nd, 130kph in 3rd, 180kph in 4th, and the fastest I've gone in 5th is 210kph, but who knows how well the speedo is calibrated.

jiggy410

nice....thnx for the feedback...

and i was also wondering..if i put in a new intake and or headers....do i need to get other part to "maximize" the intake and headers performance...

Gen1GT

A header and full exhaust is a good start for more power. There aren't any good intakes for our car, but and RX7AFM and a pod filter will add a few hp. Advancing your ignition timing is a great and free way to more power.....

jiggy410

nice...thanks

rck2drums

There is an excellent intake, the PRM Pro Intake System. I had one on my SE and it made a huge differance.