Has anyone noticed hood lift?

[glenng6]

Not to be dramatic but… I have significant panel gaps on my hood, and driving 90-100 mph on a very windy day, i thought my hood was going to tear off. I’m considering hood pins.

I would have the hood adjusted first. I've driven my GT up to 145 mph and have no lift. All my body panel gaps are perfect, as well. Glenn

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[AZ_Ryan]

Has anyone mentioned if the vented GT hoods do this?

GT hoods make no difference in lift or panel fitment.

 

[Garcia172]

I have a 2024 ecoboost and darkhorse, and on both I’ve noticed at 60mph+ the hood will move up and down or maybe buckle a bit. I went to Sebring last week with the DH and I had thought the latch didn’t shut all the way and had to go back to pit road to check. And when I did it was fine. Wondering if yall have noticed the same thing. Thanks

The hood vents will create a low pressure spot on the center of the hood, and when going fast enough the hood can flutter. That's what you're seeing. Check out the hood bump stops (rotate to adjust).... check the rear hinge assy for up/down slop. I've never experienced that in the S650, but am very experienced with that in race cars with similar hood venting.

 

[jubalh027]

GT hoods make no difference in lift or panel fitment.

Good to know.

 

[Dark Sprite]

Does anyone have a guide, or the pages from the service manual, on how to adjust for hood fitment? I had a bit of hood wobble with mine and had the dealer correct it, only for them to misalign it worse than before resulting in worse hood wobble at speed…

 

[wireeater]

This has been an issue since at least the first gen of S550 platform. All of my Mustangs had it. All I had to do was twist the rubber bump stops under the hood to adjust them which pretty much gets rid of the problem.

 

[LouG]

The hood vents will create a low pressure spot on the center of the hood, and when going fast enough the hood can flutter. That's what you're seeing. Check out the hood bump stops (rotate to adjust).... check the rear hinge assy for up/down slop. I've never experienced that in the S650, but am very experienced with that in race cars with similar hood venting.

Are you sure? Normally a hood has a high pressure area at the front, and at the rear hood/cowl area. Venting the middle should reduce the low pressure area.

 

[Garcia172]

Are you sure? Normally a hood has a high pressure area at the front, and at the rear hood/cowl area. Venting the middle should reduce the low pressure area.

We're not talking about the front the car. We're talking about the hood vent assembly on top of the hood. The vents themselves create a high pressure area just in front of them, resulting on a low pressure area on top and right behind them. That's what "pulls" air though them at speed. I've had the same issue on a race car where the radiator is ducted though the hood, and we have a 1.5" flap that sticks up out of the opening in the front of the opening. Same principle. Same hood wanting to lift at high speeds.

Take a look at the two front corner threaded rubber stops that the hood shuts on. Typically you use these to adjust the front of the hood-to-fender alignment. If they are adjusted too far down, the hood could flutter as well. Too high, and the alignment if off. Did you play with those?

 

[AZ_Ryan]

We're not talking about the front the car. We're talking about the hood vent assembly on top of the hood. The vents themselves create a high pressure area just in front of them, resulting on a low pressure area on top and right behind them. That's what "pulls" air though them at speed. I've had the same issue on a race car where the radiator is ducted though the hood, and we have a 1.5" flap that sticks up out of the opening in the front of the opening. Same principle. Same hood wanting to lift at high speeds.

Take a look at the two front corner threaded rubber stops that the hood shuts on. Typically you use these to adjust the front of the hood-to-fender alignment. If they are adjusted too far down, the hood could flutter as well. Too high, and the alignment if off. Did you play with those?

Its doesnt matter. These hoods shake with or without the vent, and have done so since the first S550. Its a design and fitment issue.

 

[Garcia172]

Its doesnt matter. These hoods shake with or without the vent, and have done so since the first S550. Its a design and fitment issue.

That may be the case. Mine doesn't. But those vents will produce a low pressure area which will produce lift in that area. If the threaded rubber stops are loose, it will allow for more movement.

 

[AZ_Ryan]

If the threaded rubber stops are loose, it will allow for more movement.

No one is disputing that. Like many people have already said, I adjusted my stops and its much better. I also had to do the same thing on my S550. All im saying is its not because of the hood vents.

 

[Garcia172]

No one is disputing that. Like many people have already said, I adjusted my stops and its much better. I also had to do the same thing on my S550. All im saying is its not because of the hood vents.

Mine are tight. I played with them to adjust panel alignment. I see zero movement, but then again, I haven't had the car really in to triple digit speeds. On the race car at 150+mph... the glass hood has a lot of movemente.

 

[LouG]

No one is disputing that. Like many people have already said, I adjusted my stops and its much better. I also had to do the same thing on my S550. All im saying is its not because of the hood vents.

Ditto
The other factor on the Mustang is the longitudinal ridge running parallel to the hood edge. That catches the eye and exaggerates the amount of movement.

 

[Junkyard Dog]

I have not noticed this on my Dark Horse, but I do not think I have been over 130-135 or so. And maybe I just did not notice because I was concentrating on not dying or something.

 

[LouG]

I have not noticed this on my Dark Horse, but I do not think I have been over 130-135 or so. And maybe I just did not notice because I was concentrating on not dying or something.

Life is terminal Mr Dog. Nobody gets out alive.

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