West TX RX-7

Now I've driven a 2001 Vette 6 speed and pulled 175 in 5th, then switch to 6th and loose 10 mph hehehe, Same thing with the Dodge Viper (Same buddy had the Vette that I drove,... rich *****) but the Viper would do 183ish in 5th then drop 10mph or so in 6th.

If I had a choice of a free car that I could not sell but had to drive, the Vette would win hands down. New Vette Mo Betta than any rex I've driven, there a dime a donzen though unlike an RX-7. I've seen maybe 6 different rex's on the streets in my area of 250k ppl or so.

koukifc3s

iTrader: (3)

ya with 205/65/15 130 in 4th gear at 7k RPMs

christi

well, when im on the interstate, i automatically redline 1-4 and then hit 5th gear. I know about 5500 in 4th gear is about 85-90, or so it was last time..... I did it.. lol

eek, I could be wrong. I don't know. I don't go that fast anymore since I have been pulled over - not for going that fast though, just for speeding.. lol.

79cid

135mph in fourth @ around 6500rpms.
Not too sure b/c I was too scared to take my eyes off the road.
90 N/A

...oh yeah, three people were in the car...the other guys were sleeping, didn't even know what I was up to!

Amur_

Was this for me?


No, she wasn't stock. Downpipe and hi-flo cat and K&N in the stock airbox. The airbox has since been dropped for a very nice DIY cold air box. She just needs headers and a cat-back and that'll be it for engine mods for me.

I haven't had a chance to see what she'll hit with the new box yet. Soon, I hope...

Mykl

My '89 convertible and my old '90 GTU both read 140 on the speedometer at about 8000 RPM's, maybe pushing a little into the redline. I doubt they're actually going that fast given speedo error... but that's what the speedo said.

The only time I ever see those speeds anymore is on my CBR. It's not exciting to do in a car, so I don't do it.

cryptowave

What are you driving? 90 N/A gtu here.

Maybe i'll give 4th a redline test tomorrow... I'll bring a box of doughnuts just in case.

mrb63083

iTrader: (4)

I don't know how fast I was at in 4th but I have been at 155 in 5th before and it was at like 5500 rpm. I do believe it would of went 160.

cryptowave

I should get a picture of this...

I was going 85mph @ 0 rpm!

My rpm gauge broke this morning!

Kanaida

Well this sucks.. I topped out at 124 in 4th out here on I-71.. I was hitting redline too! But this was back in the day, last summer, when all I had was just dp/mp/cat back. Plus I'm pretty sure my turbo is caput. I shifted into 5th, and lost like 2 mph. ZERO pull what so ever in 5th gear. And whatever car it was I was racing, some big luxery sedan PULLED on me and left me. It was SAD!!! I remember doing over 120 in my '89 GXL one night and was pulling in 5th gear. Let off though. I was scared . night time, country roads.. animals.... Wrecked that thing though.

-Kanaida

SureShot

Yes officer - it was 55 exactly.

JDMkamikazeeRX

Never taken it past 105. Too many cops around

2ndGen.rocket

ive hit around 125 without redlining 4th gear, but as soon as i shifted to 5th I started to lose power, the car didn't seem to want to accelerate much more.

christi

88 gxl n/a - still stock.....i'll modify it...when I get the money. =/



above left: my bro's 1985? GSL-SE... scca race only..
above right: my 88 gxl....

and while I'm at it.. can someone resize that picture and still allow it to be 'readable'?.....

zeaone

143 at about 8100 rpm in a n/a t2 tranz and diff in 5th with buddy on a gixer 750 clockin side by side
scary body had 250,000 on stock rubber not a good feeling

KhanArtisT

iTrader: (2)

^ lol, you got some ***** keeping it at redline for that long I've topped my car out at least 3 times. 7900 rpm at 135mph in 4th, 5th gear it starts decelerating.

danhaggis

iTrader: (3)

142 in 5th down hill normaly 136ish

Roen

iTrader: (2)

S4 Redline Speeds (@ 7000) Assuming non-86, NA tranny, 24.7" overall diameter, manual transmission, mph scale
1st: 36
2nd: 63
3rd: 92
4th: 125
5th: 179.89 (Yeah, not going to happen on a stock NA, or any NA for that matter with this tranny)

S5 Redline Speeds (@ 8000) Assuming non-GTUs, NA tranny, 24.7" overall diameter, manual transmission, mph scale
1st: 41
2nd: 72
3rd: 105
4th: 143 (You'll have difficulty on a stock NA)
5th: 205.59 (Yeah, right)

86 and GTUs speeds are slightly different, 86's will have a slightly lower 5th gear max speed with better acceleration than its S4 bretheren due to a slightly taller 5th gear. The GTUs will have a lower top speed in every gear due to it's 4.3 Final Drive Gear as well as better acceleration and even lower top speed in 5th due to it's significantly taller 5th gear. (Think 10% taller, which equals 10% better acceleration in 5th gear based on 5th gear gearing alone)

Delphince

Body is S5, but where it counts mine is an '88 GXL. I've never found her top end. Fastest I've had her was about 135 and still pulling a bit in 5th, so she would have given a little bit more, but I ran out of "safe" road. Pure speed has never given me much of a thrill, so I've never had the motivation to try again.

Granted, I've done a couple things to my motor so it isn't stock, but nothing as drastic as any kind of port job. 110 is a daily drive to work (and on occation while at work), so that probably accounts for the rear end problem I'm currently wrestling with.

zbrown

use this link.... thanks to Roen

http://www.kabamus.com/garage/gears.html

You guys need to live in the boonies so you can mess around

i usually only do 4th gear pulls but 3 times now we have done full 5th

I dont have a speedo back in the car yet, but i had always thought around 180 but according to that site it was around 193........ Math never lies

275/45/17 DR's, 4.1 rear......... I had the rev limiter set at 7.5k and i know i got there each time because that is were i had the hard cut set at and it hit hard cut each time

s5 TII tranny are a .752 right??

way waaaay back the na auto would take awhile but get to about 135 on the stock guage

Roen

iTrader: (2)

.719 actually

S4 TII is .762

S5 GTUs is .752

zbrown

Whoa.... I guess the S5 TII has a .719 ratio not a .752 like i thought....

With that calculator that means 202mph at 7.5k with my tires and rear..... How the **** could it be that fast???..... I always thought in my head about 180, def felt fast but i didnt think that fast, cuz it pulls too hard in 5th for me to think it got to those speeds as quickly as it does

maybe no more of those for awhile


edit... ha, roen i had just found on mazdatrix it is a .719 too

djmtsu

iTrader: (3)

This thread is 4 YEARS OLD!

Roen

iTrader: (2)

blame the n00b, i just posted the end-all speed chart as defined by gear ratio. all questions should be directed to that post.

Good ol' Mazdatrix and their ratio page.

magus2222

iTrader: (22)

let me see, following an audi on the freeway here in norcal at 135 mph in 5th at i think 6 or 7g, cant remember, all i know is i was flying.

peace