I was driving to and back from the HardRock Casino here in Hollywood, Florida at around 2am when there were no cars.

The FC only hit 120 Top in 5th gear.
I was holding the Pedal to the Metal but she wouldn't go past 120 at all.

I've done all the maintenance

Has anyone here gone faster than 120+mph on their FC?

 

on those tires? ur crazy man!

 

erm you are bone stock? lol like cats and everything?

when I have my stock exhaust that is about where I topped out. I put on some after market exhaust and got her up to about 135

Edit: yeah stock tires are terrifying at high speed (I have tiny phone dials) :O

 

You are never going to hit top speed in 5th gear with the NA transmission, ever. With full exhaust you should be able to redline 4th gear which is ~140mph. I did it three times with a full exhaust on stock ports.

 

i have a 87 GXL all stock cept for a aftermarket intake and filter and i got up to 120 in 5th and i was going for about 30 seconds couldnt get past 120. and omfg the 22 year old suspension, when i hit bumps my head literally hit the headliner. bout to fix that tho, got the Eibach pro springs and waitin on KYB AGXs

 

I guess I am super lucky. I can do 120 pretty easy in my vert, but the feeling like I am going to go airborne on every bump isn't my idea of fun.

 

On my GTUs i hit 130mph around 7k RPM's in 4th. Very solid, felt like it could do at least another 10-15mph

 

My first T2 was bone stock. I hit just over 140.

 

Mines worked, i hit limiter in 5th which is only 6500rpm at the moment, but it did it fairly easy, unsure of exactly how fast it is as the jspec speedo only goes to 180kph, and well i was shifting into 5th around the time it went off the clock, was prob about 240kph

 

Thank You for all your replies.

I'm going to work on mods soon then

 

I don't know if my car as any diferential mods but without cats and all the other things stock i could pass 120mph in 4th and i would do 150mph in 5th with no problem...

BTW I drive an S4 N/A

 

I've cruised at 120 in 5th no problem.

get some wheels, tires and suspension mods... your nucking futs for trying to top out with stock tires/suspension.

 

Betcha $100 that your stock NA won't run 150 MPH...with or without problems.

 

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I don't know if it has anything to do with the fuel... Because here in Portugal we use 95, 98 and 100 octane... I've allways used 95

Where's my $100??

 

Sorry, but your speedometer is hardly accurate enough to accept as proof of anything save forward movement. Hell, for all we know, you're running 12" rear wheels.
Let's see a radar trap ticket.

IIRC, Mazda only claimed a top speed of 128 MPH and you know they did everything possible to get there.
Once you cross the 100 MPH barrier, aerodynamics starts to become the dominant factor...not horsepower, not fuel octane, not driver ability and the RX just doesn't have the body to reach 150 MPH without some serious modification.

 

yeah it sure felt like my fc was gonna take off on every bump at 120

 

Lol... Whatever dude... I'm running 15" wheels stock on the GXL model.. If that video doesn't show you that the car can run that speed it's not my problem...
But as KhanArtisT said:
"You are never going to hit top speed in 5th gear with the NA transmission, ever. With full exhaust you should be able to redline 4th gear which is ~140mph. I did it three times with a full exhaust on stock ports." And i know my car can do allmost 140mph in 4th...

 

ive had my vert to 140 on the highway in fifth. But got almost to 135 in 4th.

 

The speedometer is far from accurate at high speeds. Show the tach and speedometer in the same shot and then that might be considered proof.

 

with home depot cold air intake, pace setter header, and 2.5" straight pipe all the way back i hit 150 before i chickened out in my 88 GXL. i agree though past about 90mph you can kiss accuracy out the window. in all reality i was prob only goin about 135 or so in real mph

 

^what gear and what engine speed?

 

well im pretty sure mine is close because some idiot in a newer civic with all kinds of Vtec stickers tried to pass me while i was cruising at 80 mph and then go in front of me and kept tapping his brakes so i pulled out and gave it hell. my speedo was reading 120 and climbing and he was long gone and couldnt even slightly keep up. I stayed on it until he was out of sight so i wouldnt have to deal with him again.

 

Good man! Show the Vtech who's boss!

 

it was kind of funny because there was also some modded integra running with him and that couldnt keep up either. I even let him pull up next to me a few times and get a good start then i would down shift to third and give it hell and blow right on by him.

 

my s5 vert would hit easy 135mph at the top of 5th when it was bone stock... now that my motors fully built and my whole exause system is set up im pushing 160mph easy on a flat straight away