Ford Performance FR3 Track Dampers on GT PP1 suspension?

[sloopy]

I have some questions regarding dampers for the GT PP1 suspension. Ever since installing polyurethane rear subframe bushing inserts, I have been happy with the handling of the car on my Michelin Pilot Sport All Season 4's. But I hear all the time that the rear dampers on the PP1 suspension are under-damped on rebound and that perhaps the whole damper setup is not that great. I'm really interested in the FR3 dampers from the ford performance track handling kit. People say that these dampers are a great match for the PP1 suspension, but it doesn't make much sense to me because those dampers are tuned for significantly stiffer springs. Is it really true? I really want comfort and (during spirited driving) stability and predictability. I definitely don't want to make the car any harsher on bumps. Counter intuitively, I have heard people say that the FR3 track dampers will deliver on all of these aspects. Has anyone run these on an otherwise stock PP1 setup?

Also, I was not informed about magneride when I chose my mustang and part of me is wondering if I made a mistake. Can anyone put my mind at ease and give me a realistic answer on what I'm missing out on comfort-wise compared to the regular PP1 suspension?

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[sloopy]

(edited for clarity and updated the title to be more relevant)

 

[EFI]

You can certainly run the PP springs with those dampers, but I would change those out to the track springs which are better matched. You're already doing all that work, no sense in putting back in stock 10 year old springs. I don't expect the ride quality to get any worse, especially given the age of your current suspension.

Your car never came with magnaride, so you have nothing to worry about. Yes it's a more comfortable ride, but simply updating your 10 year old suspension will improve how your car rides.

 

[sloopy]

I didn't think springs wore out during any realistic lifetime of a car except for the case of manufacturing defects. If I went the route of upgrading the springs, I'd probably go with early base gt350 springs and anti-roll bars with the FR3 track dampers because I want to maintain my ride height. But I don't want to make the car any more uncomfortable. To be clear, the car is reasonably comfortable and very fun right now and I don't think that making it much stiffer will make it more fun for me, but just make it less comfortable. I'm running 275/40R19 Michelin Pilot Sport All Season 4 on 19x10" wheels all around and don't really intend to run summer tires, definitely not anything like Cup 2's.

I guess I'd have to ride in a pp1 magneride to really know the difference. I chose this car because I didn't want the touch screen :^) lol

 

[EFI]

I'd probably go with early base gt350 springs and anti-roll bars with the FR3 track dampers because I want to maintain my ride height.

The Y springs are basically the same as the OEM non-R 350 springs, in the same way the FR track dampers are the same as the OEM non-magride dampers. So that's why those are a good combination together and a good improvement over the stock PP stuff.

 

[sloopy]

Yes. I'm not able to find sources for this, but I'm pretty sure I've seen it suggested that the FR3 track dampers are a good match for the PP1 suspension. I'm not a suspension engineer, but I thought that given the spring rate, motion ratios, and sprung mass, that there was a pretty tight range of what would be considered an ideal damping rate. But I don't know the math and I don't have much intuition about how much damping I would want except that I don't like springy bounciness and I don't like getting jarred. The idea of using a standard Ford part is very appealing and I really don't want to mess with adjustable dampers.

 

[EFI]

FR3 track dampers are a good match for the PP1 suspension

Search on here for FR track dampers with the FR X springs (which are essentially the PP springs). Several people have tried that combination.

 

[sloopy]

Thank you! I had forgotten about that fact.

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