Hitting 300 km / 183 miles

[MustangGt2018]

Again… Go away.

A friend of mine wanted to know, if your from California, do you think you might be acting like a snowflake at this post because there are people who are not subject to similar legal limitations like you?. I understand your Speed limit blue balls, but there are ways you can more effectively relieve yourself, like going to the track.

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[shogun32]

The cars handling, obstacle avoidance and braking stability is impressive.

at 150mph?

The point is your car has no aero. Ford didn't slap functional wings and spoilers on the PP2/GT350 just because they looked cool. Even if you were to put all the PP2 bits on, you still don't have the MR shocks which are, just a hunch, a key ingredient to the equation.

What we're getting at is what's the point? 255km/h is "known safe" and the time saved going 300 for a few seconds at a time isn't going to save you any damn time. Have you checked how your car handles the cooling at 255 for an unbroken say 5 minutes? How long does it take at 120mph to cool down enough that you can do your next top-speed stint?

If you're pathetically insecure about being blitzed by Camaros, go buy one. You have a substandard car so asking for upgrade advice from the Internet is just STUPID! Go find an AMG or Audi or suitable car that's been designed AND TESTED for top-speed runs by very serious German engineers with permanent scowls on their faces.

 

[The Demon]

A friend of mine wanted to know, if your from California, do you think you might be acting like a snowflake at this post because there are people who are not subject to similar legal limitations like you?. I understand your Speed limit blue balls, but there are ways you can more effectively relieve yourself, like going to the track.

Pretty early in Germany. Servicing your friend?

 

[MustangGt2018]

at 150mph?

The point is your car has no aero. Ford didn't slap functional wings and spoilers on the PP2/GT350 just because they looked cool. Even if you were to put all the PP2 bits on, you still don't have the MR shocks which are just a hunch a key ingredient to the equation.

What we're getting at is what's the point? 255km/h is "known safe" and the time saved going 300 for a few seconds at a time isn't going to save you any damn time. Have you checked how your car handles the cooling at 255 for an unbroken say 5 minutes? How long does it take at 120mph to cool down enough that you can do your next top-speed stint?

If you're pathetically insecure about being blitzed by Camaros, go buy one. You have a substandard car so asking for upgrade advice from the Internet is just STUPID! Go find an AMG or Audi or suitable car that's been designed AND TESTED for top-speed runs by very serious German engineers with permanent scowls on their faces.

What do you think about the APR 71 Wing and spoiler. Again sorry for my lack of understanding your specific details but are you saying the car needs more downforce? A slight raise in the back did help a bit, I didn't think a wing or spoiler was needed, what are your technical thoughts on that?

You seem to be missing the point, this is simply for fun and doing it safely is the point. As far as 255 limitations go, I don't think you understand the point and are getting emotional. If I'm wrong and you do in-fact have any technical information on upgrades that can contribute to this OP please share Anything of value would be great besides your emotions or ego fueled rants would be great. But the fact you think you need German engineers to go another 45 km safely shows you probably don't have much experience driving past 100km or any sort of real racing experience.

 

[EFI]

It's probably better to just not respond if you lack the technical knowledge or experience to know which modifications could be made to weak points to increase the safety from 255 to 300.

You apparently lack the knowledge too seeing as how you made this post.

Carry on my friend and good luck in your wildish endeavors.

 

[shogun32]

What do you think about the APR 71 Wing and spoiler.

it's pretty? Have you gotten the wind-tunnel data from APR and asked how much you need to re-enforce your bumper and trunk, how many struts you need to withstand the downforce, and if they've tested beyond 260km/h? And what the configuration of the car was when they did that testing? tires, psi, springs, ground clearance, wing angle, rake.

Because lets reasonably suppose a 'clean' car can fly fine at 255km/h. You slap on APR bits and the handling gets evil at 230. Impossible you say? Ha!

this is simply for fun and doing it safely is the point. As far as 255 limitations go, I don't you can read what I've already done

maybe you could publish a URL to this compendium of prior experience you have amassed? If you've got the experience and know how to instrument your car and know what the data feeds are telling you, why the hell are you asking a random forum?

 

[MustangGt2018]

You apparently lack the knowledge too seeing as how you made this post.

Carry on my friend and good luck in your wildish endeavors.

Don't get me wrong, not that I truly need the help, I just thought before I start running this car another 45 km based on my personal observations and fixes, it would be better to ask a group of mustang enthusiasts who might share something of value. Lots of information on adding 300 HP to the stock motor but not my thing... I got a big D already..

 

[Nardly]

Hood pins, I would not want that flying off at the speeds you’re suggesting.

 

[shogun32]

based on my personal observations and fixes

do tell.

 

[MustangGt2018]

do tell.

Well, the hood was a concern, after 200 km, it begins to lift from the air entering the grill. The metal latch seems to hold up very well at 255km without any sign of failure, its just my opinion but after inspection the metal holding it down seems pretty secure and the lift is actually allowing the air to vent. But another 45km does make a difference and I don't know if that latch has ever been prone to failure.

There was low hanging fruit like the tires with a speed rating of W ( 168 Miles ) Upgrading those to Y rating ( 186 miles ) is an obvious upgrade. Another one is stability such as stiffing the chassis with reinforcement and widening the tires and putting bigger tires in the rear to lift it slightly. I know lowering springs is a popular upgrade, but there is nothing wrong with stock height and if you really want to increase handling just lift the back with slightly larger wheels in the back ( we are only looking for a slight aero stability tweak for higher speeds ). You can add weight to the front end by increasing the sway bar sizes and upgrading the radiator.

And of course another obvious one is the misconception you mentioned before why a car professionally driven might suddenly do a backflip at a high speed or something similar. This is usually caused by a lack of weight or something light travelling at high speeds that weighs around 1000 pounds lol. This isnt for the race track going high speeds in every direction, just a simple autobahn straight line road. If you think the mustang is going to have that problem doing a backflip, you don't understand the weight of the car ( it is very well planted ). The more relevant issue inline with the concern you mentioned would be drag and having really bad mileage problems when you drive between 200 to 300 for an hour each way. I should mention, no one is doing a hard cornering at 300 km lol hence why I question your spoiler and wing comment.

But the last thing someone wants travelling 300km down the autobahn is something coming loose and causing damage to another persons property.

 

[shogun32]

Another one is stability such as stiffing the chassis with reinforcement and widening the tires and putting bigger tires in the rear to lift it slightly.

can you quantify this 'slightly'? You went from rake angle of X to Y? you went from chassis height over the front axle of A and rear of B to ?

You can add weight to the front end by increasing the sway bar sizes and upgrading the radiator.

Hot diggity, so that's why I went from 32mm front bar to 35mm.

Nobody said anyting about backflips. That's Porche's signature move at Road America.

I should mention, no one is doing a hard corning at 300 km lol hence why I question your spoiler and wing comment

uh huh. And you've never seen the spoilers rip off the bottom of the car, the supports pull out of the bumper, get stuck under wheels, or do untoward things in general. At <120mph you can pretty much get away with murder. Above that things can get dicey fast.

All of the mods you've described so far are just 'spit ball' guessing based on "common sense" aerodynamics. I'm glad it hasn't landed you in a hospital yet but eventually one runs out of luck.

 

[The Demon]

Is this guy banned yet?

 

[luc]

So, let me see if I understand you correctly:
You are in Germany where some sections of the autobahn have no speed restrictions and you want to take your car to 300kmh ( obviously a symbolic number like 200mph in the USA)
For that you need to modify your car, run afoul of German regulations such as TUV, loose all liability insurance for the above reason, put others people at risk and you want us to help you achieve this goal?
I think that the most important modification that is needed is to your brain.
You should set up an appointment with a psychiatrist to see what can be done about it
Good luck…

 

[shogun32]

I'm guessing he's a low rank airman/grunt on overnight fire watch at the barracks and is bored out of his mind and needs something with which to impress the bar maids. Who haven't seen a 300km/h car before, let alone one of those new-fangled American Mustangs.

 

[MustangGt2018]

can you quantify this 'slightly'? You went from rake angle of X to Y? you went from chassis height over the front axle of A and rear of B to ?

Nobody said anyting about backflips. That's Porche's signature move at Road America.



uh huh. And you've never seen the spoilers rip off the bottom of the car, the supports pull out of the bumper, get stuck under wheels, or do untoward things in general. At <120mph you can pretty much get away with murder. Above that things can get dicey fast.

All of the mods you've described so far are just 'spit ball' guessing based on "common sense" aerodynamics. I'm glad it hasn't landed you in a hospital yet but eventually one runs out of luck.

The stock tires was a 18x8 235/50/18 pirelli p zero all season W 97 which have a top speed of 168 Miles. These were upgraded to 265/40/19 Summer Y 102 in the front and 275/40/19 Summer Y 105 in the rear. These tires are on the upgraded Ford High Performance Rims 19-9.5 in the front and 19-10 in the rear. In the selection of these specific sizes, I was able to maintain the ride height in the front, whereas with 255 the Diameter would have been slightly less then stock but most concerning was the 0.6 inch decrease in the Sidewall. The 265 gave the exact Diameter as stock fit maximizing the sidewall whereas the 275 in the back gave a lift to the rear of 0.4 which could be expanded a big with higher pressures.

So far as I've mentioned this car seems solid running at 255 just about any condition except rain ( no one is running past 100km in wet weather ).

I have seen the additional support people are adding to the front, do you think that is a must have upgrade to go to 300km? another person mentioned hood clips? What else? I purposely didnt mention the Driveshaft wondering if any truly experiened person would come along here and start mentioning other parts that need a performance upgrade.

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