Top end speed run.
Top end speed run.
I took my 5 SXT ATX out for a top end speed run yesterday. It's all stock except for a 1st gen DOHC style muffler (Walker Quietflow 3), and the airbox resonator is removed, and a K&N filter in the stock airbox.
On a long flat piece of road, I made it up to 109 before having to get on the brakes, as some idiot was in my lane. But going from 100-109 took a good 1/4 mile. This thing has no top end at all! I wanted a 50 hp nitrous shot badly for that speed run.
It was running about 4300 rpm in top gear at 109, so it should have been in the power range, according to what I read on stock motors.
I have a Pacesetter header and new Magnaflow 2-1/2" cat to install next weekend, I hope it does better in a top end run after that.
A friend with a 3 SXT 5 speed said he had no problem hitting the 120 mph cutoff.
On a long flat piece of road, I made it up to 109 before having to get on the brakes, as some idiot was in my lane. But going from 100-109 took a good 1/4 mile. This thing has no top end at all! I wanted a 50 hp nitrous shot badly for that speed run.
It was running about 4300 rpm in top gear at 109, so it should have been in the power range, according to what I read on stock motors.
I have a Pacesetter header and new Magnaflow 2-1/2" cat to install next weekend, I hope it does better in a top end run after that.
A friend with a 3 SXT 5 speed said he had no problem hitting the 120 mph cutoff.
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Re: Top end speed run.
timk225 wrote:
On a long flat piece of road, I made it up to 109 before having to get on the brakes, as some idiot was in my lane.
Most likely what the other person was thinking too.
Bill
1999 neon coupe 2.4 swap
2021 Forester
2000 Neon MTX swap with '02 R/T PCMOlha Koba, a psychologist in Kyiv, said that “anger and hate in this situation is a normal reaction and important to validate.” But it is important to channel it into something useful, she said, such as making incendiary bombs out of empty bottles.
1999 neon coupe 2.4 swap
2021 Forester
Well I'm not going to build the car for top end only, I was just disappointed that it had so much trouble with top end acceleration. It was good to 80, ok to 90, and then it took a while to get to 100 and even longer to 109.
My 1989 2.5 Turbo 5 speed Spirit ES easily hit its 120 mph speed limiter and would have gone over 130 with no problem when it was intercooled and on 12 psi boost.
My 1989 2.5 Turbo 5 speed Spirit ES easily hit its 120 mph speed limiter and would have gone over 130 with no problem when it was intercooled and on 12 psi boost.
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- Junior Admin
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- Location: Ashland Ohio
Not really an apples to apples comparison there.
The 2.5 more than likely had a ton more torque, and no oil pump in the trans consuming power.
An MTX is going to get up to speed faster on that alone. That extra parasitic loss on an engine, that is at the end of it's power band, fighting wind resistance, is going to take a hit with something that even consumes as little as 5 hp.
Now on a vehicle that is an absolute brick, it may not matter, because the drag will kill either, before it gets to that point. Given both engines are equal.
The 2.5 more than likely had a ton more torque, and no oil pump in the trans consuming power.
An MTX is going to get up to speed faster on that alone. That extra parasitic loss on an engine, that is at the end of it's power band, fighting wind resistance, is going to take a hit with something that even consumes as little as 5 hp.
Now on a vehicle that is an absolute brick, it may not matter, because the drag will kill either, before it gets to that point. Given both engines are equal.
Bill
1999 neon coupe 2.4 swap
2021 Forester
2000 Neon MTX swap with '02 R/T PCMOlha Koba, a psychologist in Kyiv, said that “anger and hate in this situation is a normal reaction and important to validate.” But it is important to channel it into something useful, she said, such as making incendiary bombs out of empty bottles.
1999 neon coupe 2.4 swap
2021 Forester
Re: Top end speed run.
occasional demons wrote:timk225 wrote:
On a long flat piece of road, I made it up to 109 before having to get on the brakes, as some idiot was in my lane.
Most likely what the other person was thinking too.
But seriously what are you expecting from an ATX economy car? Of course theres no top end WHY because gas saving city car. Its only a 4spd too isnt it? 4spd+132hp+sxt pcm=slow car. Not trying to slam you or anything but these are basics you should know if you wanna go fast.
Have car-have car problems. Have srt4-have speed problems
My 5 speed 05 sxt could get to the cutoff reasonably well. That ATX is a parasite to any power. And why are you worried about going 100+?
So many neons so little time.
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