theoretical top speed

[jman050]

Does anyone know what speed a 4.11 geared 5speed would be gear limited to? I honestly searched for an hr i promise

[AvPPoW]

http://rallyeng.selfip.com:8080/SVX/...ear_speed.html

according to that, a WRX's 5th gear redlines at 174, the normal impreza transmission won't be too much different

[thundering02]

If I remember a pic from a while back it was at about 120 at 5k rpms which sould put it about 170 redline...
Edit: or somebody with a lik to real numbers can beat me to the post..

[Jade Dragon]

Its just a math problem. take the max engine speed. devided by the final gear. then multiply that to the circrumfrence of the tire. then turn it into mph. that would the absolute max speed. math is fun lol

[Hocrest]

One of the members of our SCCA chapter posted this site (I think it is his??)
http://www.pcvsoftware.net/applet.html

Here is the data for a stock SVX trans/tires;
Gears: 1st 2.785
2nd 1.545
3rd 1.000
4th 0.694 Final 3.545


RPM 1st 2nd 3rd 4th

1000 7.3 13.2 20.3 29.3
1200 8.8 15.8 24.4 35.2
1400 10.2 18.4 28.5 41.0
1600 11.7 21.1 32.5 46.9
1800 13.1 23.7 36.6 52.8
2000 14.6 26.3 40.7 58.6
2200 16.1 29.0 44.8 64.5
2400 17.5 31.6 48.8 70.3
2600 19.0 34.2 52.9 76.2
2800 20.5 36.9 57.0 82.1
3000 21.9 39.5 61.0 87.9
3200 23.4 42.1 65.1 93.8
3400 24.8 44.8 69.2 99.7
3600 26.3 47.4 73.2 105.5
3800 27.8 50.0 77.3 111.4
4000 29.2 52.7 81.4 117.2
4200 30.7 55.3 85.4 123.1
4400 32.1 57.9 89.5 129.0
4600 33.6 60.6 93.6 134.8
4800 35.1 63.2 97.6 140.7
5000 36.5 65.8 101.7 146.5
5200 38.0 68.5 105.8 152.4
5400 39.4 71.1 109.8 158.3
5600 40.9 73.7 113.9 164.1
5800 42.4 76.4 118.0 170.0
6000 43.8 79.0 122.0 175.9
6200 45.3 81.6 126.1 181.7
6400 46.7 84.3 130.2 187.6
6600 48.2 86.9 134.3 193.4
6800 49.7 89.5 138.3 199.3
7000 51.1 92.2 142.4 205.2
7200 52.6 94.8 146.5 211.0
7400 54.0 97.4 150.5 216.9
7600 55.5 100.1 154.6 222.8
7800 57.0 102.7 158.7 228.6
8000 58.4 105.3 162.7 234.5

[TomsSVX]

about 147 is all i got out of my 4.11 5mt. I didn't push it too hard because hitting the rev-limiter at those speeds can be disasterous. I was reving at about 6400 rpm

Tom

[black beast]

dumb question...
Where the heel would you need to go that fast?

I went 127 but in all reality that is fast enough to beat anyone out there as most pussy out at 105. So why?

[TomsSVX]

Why would you eat Mcdonalds? Burger King is always there too. I mean and then there is Wendy's. Because I like speed. I don't do it all the time infact I haven't even gone over 100 in my silver since I have gotten it. It was just a once in a while thing I did becuase the car accelerated to the speed so quickly and with my old brakes, it would slow extremely fast as well

Tom

[n00b on demand]

Originally Posted by black beast

dumb question...
Where the heel would you need to go that fast?

At the track

[Chiketkd]

Originally Posted by n00b on demand

At the track

Love your new avatar Tom!!!!

-Chike

[Phast SVX]

i hit about 151 on the speedo, but a buddy of mine in a mkiv next to me said his aem was reading about 139. I really wish we had an accurate tach/speedo

[n00b on demand]

Originally Posted by Chiketkd

Love your new avatar Tom!!!!

-Chike

Thanks

[dcarrb]

I've read elsewhere that a stock SVX in fourth gear at redline would be doing close to 200 MPH. Thing is, it takes way more than 230 horsepower to get there, and that would be your problem approaching any such lofty speed, no matter the gear ratio.

dcb

[SuBrat84]

Originally Posted by dcarrb

I've read elsewhere that a stock SVX in fourth gear at redline would be doing close to 200 MPH. Thing is, it takes way more than 230 horsepower to get there, and that would be your problem approaching any such lofty speed, no matter the gear ratio.

dcb

According to the chart:
6400 46.7 84.3 130.2 187.6
6400 RPMS you are doing 187.6mph in top gear with the stock 4spd. I don't remember the exact number... but I'm pretty sure you need a certain % of hp/torque (450whp?) to get past the drag that is created around ~165mph... I had mine doing ~140 on the speedo.. and it was pulling.. I think it needs a bit more power to try and make it past the 160/165 mark though.
How does everyone feel about using GPS as an accurate MPH source??

I've gotten mine up to about 115, but the accelleration began to stagnate before I had to hit the brakes towards the end of the road. I have stock gears, ecutune stage 1, cold air intake, and stebro exhaust. The ecutune chips set the rev limiter at 7500 so you can push the car faster, that is if you can get it up there in 4th.