What's the top speed an se could hit... i'm not talking about it toping out, i mean 7k in 5th what speed would it be going? i don't have a speedo... but i wouldn't try anything that stupid anyway.

 

i have an 85 gsl, and i have had her up to 120 when she was bone stock.

 

Mazda claims 135 MPH

 

Motor Trend and Car and Driver both had their tests at 125 MPH for the GSL-SE, which was better than Mazdas actual claim of 120.

 

That's when the actual needle hits 7? at 125mph?... i'm just asking because i'm considering doing a rear end swap with better acceleration gears... but i'd rather not top out in the 1/4 mile

 

it will accelerate real fast to 110 mph, then climb real slow to about 125 , then it stops pulling unless your going downhill, then who knows!...this was in a stock GSL-SE ! not bad!

 

Well, 3500rpm in 5th gear is what, about 80mph? 7000rpm would be ~160mph in theory. Stock is what, 4.09:1? If you sent to about a 5.40 which is about a 25% difference in ratios, then you would be at 7000rpm around 125-130mph. I doubt you'll be using a diff gear that high.

 

You've got way too much free time man.

 

I hit 125 in my stock '85 SE before putting the exhaust system on it. I haven't been that brave since though...

 

What was your tach at?

 

I've taken my new engine up to about 123 before slowing down (and it got there pretty quickly in comparison to my old engine). Rx7Carl has had his up to 137 on the track (adjusted to aftermarket tach reading in 5th, then factoring in his wheel sizes and rear-end ratio)

Mazda gave a figure that any stock 7 should hit. Obviously, those of us with *****, stupidity or a track have found out it's not quite a ceiling

 

After I bought my SE in Sacremento CA.........I drove back to LA.........averaged 80-90 all the way......I hit
110 twice with the AC on........I also hit 100 going up the Grapevine........It has lots of power in 5th.......

I did not try to go any faster..........It had the orig suspension on and it just seemed to float..........

Great first ride...........

 

Just a hair over 130 in mine

according to a little gearing spreadshet I have...

Stock -SE (.76 5th gear from 84/early 85)
7k rpm
121mph 4th gear
159 mph 5th gear

seems a little higher than what I've seen in the real world, but my tires aren't quite stock size, and my speedo may be off...

 

I guess i need a speedometer and an indy 500 track in my backyard to find this out, eh?

 

See? About 160mph. It's all in the math. In order to actually hit 7000rpm in 5th gear, you'll need a lot more horsepower. The car is drag limited (wind drag, drivetrain drag) to 125-135mph.

Like I implied, I would not worry much about using a lower gear (higher final drive ratio) with regards to limiting your top speed. The reasons why most manufacturers do not make it so their cars hit redline in top gear is fuel economy, engine longevity, and engine buziness on the hghway. I regularly cruise at 80-90mph on highways. 3500-4000rpm in my RX-7 is pretty high if I were using it for a long distance trip. Lots more wear than if it was geared down to 3000rpm and it would be quieter and get better fuel mileage.

 

My 85 Gs automatic runs 2600 rpm in overdrive at 79 mph, 3500 rpm in 3rd at 80 mph, its been up to 120mph with pedal to spare in 3rd when the vette I was racing finally gave up. LOL

 

damn 3500 in 5th @ 80mph....seems right...so thats what regular gears look like!
i have 4.44 and @3100 in 5th im doing exactly 60mph.
sorry no top end here. but i've taken it to 5600 in 5th and seems like 100-110mph??? anyone with 4.44???
oh yeah when i used to own rice(just mad slamed&aem coldair)i maxed the car to 120 all the time it had that damn governor,mayor,president thingy that wouldnt let go over and trust me if I COULD I WOULD.

WHATS EVERYONES TOP SPEED???