Updated 3/27/2021 & 5/5/2022 - A look at the 2020 GT500 and exhaust system valves

[Tomster]

400 series stainless shouldn't be called stainless. It rusts and corodes. 300 series stainless is much more corosion resistant (marine grade) but is much more expensive.

I wonder what the weight difference between the two is?

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[Epiphany]

300 series is austenitic, non-magnetic. It is composed of among other things, nickel and has extreme resistance to corrosion.
400 series is ferritic, magnetic. Not as corrosion resistant as a 300 series stainless and typically less expensive too.

Weight is negligible between the two in a typical exhaust system.

 

[Cobra Jet]

300 series is austenitic, non-magnetic. It is composed of among other things, nickel and has extreme resistance to corrosion.
400 series is ferritic, magnetic. Not as corrosion resistant as a 300 series stainless and typically less expensive too.

Weight is negligible between the two in a typical exhaust system.

If anyone is interested, here’s the various Stainless Steel Grade comparisons (good info):
https://www.pennstainless.com/resources/product-information/stainless-grades/

Looking at the Borla vs the stock Ford systems from merely a picture, it would appear that the Borla is a heavier unit.

Does anyone have actual weight figures for either system?

 

[Tomster]

300 series is austenitic, non-magnetic. It is composed of among other things, nickel and has extreme resistance to corrosion.
400 series is ferritic, magnetic. Not as corrosion resistant as a 300 series stainless and typically less expensive too.

Weight is negligible between the two in a typical exhaust system.

What? Is there an echo in here?

 

[Spart]

Are the actuators on the GT500 still made by Kuster (as with the GT350)?

 

[Epiphany]

I know the GT350 actuators said Kuster right on them but these don't. These are more compact as well.

 

[chief_charlie]

Another member who participated the Track Attack just recently was told to use Liquid Wrench. This was an tech with Ford Performance@ track attack. I thought one would prefer WD-40 tho.

What the Ford tech says is consistent with what an engineer with Quik Time electric exhaust cutouts (for the '12-'13 Boss 302's) told me as well. He said that Liquid Wrench is the preferred lubricant for the butterfly shafts in their motorized cutout systems because WD 40 doesn't stand up to the heat generated in an exhaust system.

 

[Epiphany]

I've used them all. If you are looking for a pure penetrant, PB Blaster and Liquid Wrench work very well, I dare say a bit better than WD40. If your system freezes up completely I'd absolutely be using one of these two. I used WD40 in this example because it displaces water well and lubricates. The condensation in these exhaust systems is ridiculous, especially on a cold startup, and I can see the lower portion of the butterfly shaft fighting a constant battle here. I believe there are advantages to using one of these over the other but it depends on what you are trying to do.

 

[Spart]

I've used them all. If you are looking for a pure penetrant, PB Blaster and Liquid Wrench work very well, I dare say a bit better than WD40. If your system freezes up completely I'd absolutely be using one of these two. I used WD40 in this example because it displaces water well and lubricates. The condensation in these exhaust systems is ridiculous, especially on a cold startup, and I can see the lower portion of the butterfly shaft fighting a constant battle here. I believe there are advantages to using one of these over the other but it depends on what you are trying to do.

I've never had mine lock up even once. Car only has 5500ish miles though. Am I in the minority?

 

[Epiphany]

I've seen zero data on the matter. Just an occasional complaint that sometimes points to a valve that is sticking. I'm not a Facebook fan but I have seen a few 2020 GT500 complaints regarding the system along with mention of damaged harnesses and blown fuses. My sense is that it is typically higher mileage cars that see valves sticking and I think this mirrors what GT350 owners have seen.

 

[NoXiDe]

I got 30K, no issues yet either but I did spray LW on it for shits and giggles.

 

[Enzo]

interested in selling your gt500 stock exhaust?

 

[Epiphany]

My stock system is back in place save for the resonators I removed.

 

[gixxersixxerman]

I wonder if they are the same as the GT active exhaust actuators. I went through a ordeal with them and Corsa valves ( not Corsa fault, the 2 step with the valve closed bent the butterfly and would set to far back causing a fault in the system) they replaced them and then we figured it out. But had spent hours playing with the OEM valves, Magnaflow and Corsa valves also trying to figure out the problem.

 

[kilobravo]

Thomas: Three quick and easy questions if you don't mind and one of them could be answered by anyone who knows the answer: <smile>

1) Is there a hidden meaning to your screen name or does "gixxersixxerman" translate? :-)

2) I've done silver, turquoise, and gold jewelry fabrication in my younger years so I immediately noticed what I presume is your wedding band. In any case, I'm curious about the materials used in construction.

3) For everyone...what function does the "spring" in the valve actuator accomplish that a fixed shaft would not? Does the spring assist the actuator motor or is it more for shock absorbing purposes? Just curious...

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