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Again, you’re assuming massive impacts. Any impact that isn’t strong enough to completely shatter a wheel and smack the nose of the car on the ground should not tear out a shock tower. As you say, yes, it should take a massive impact. And how many 718 Spyders are on the road today? Probably 200, and there’s a report of one failure. If Porsche didn’t strengthen the towers, then yes, I believe they are very stupid.
991.1 GT3 engine fires were the result of con rod bolt failures and PAG quickly stopped production and sales. After investigation all the cars sold had engines replaced (roughly 800 iirc) and owners were compensated for loss of use. The finger follower issue emerged later and while it took some time, PAG acknowledged the problem and extended the engine warranty. Although disappointing to have such issues I think Porsche handled the 991.1 GT3 engine problems reasonably. M96 engine issues is a different story.
On the 718GT4 CS, there is a metal plate on the shock tower which is bolted via a rod to the front bulkhead and also bolted to an extension tube of the roll cage.
And all that you show and talk about stiffens that strut tower. Not only that but Motorsport has these strut tower replacement easily available which to me indicates they are aware and stock to get racers back on track ASAP>
Originally Posted by 4MIDABLE
The SPMS Racing strut tower brace?? While it won't prevent the strut tower from cracking/breaking it seems, gotta think that if it prevents the tower from shooting up through the hood, that it more than pays for itself?? $495 for a set.
What's a new/repaired hood going to cost?? More than that I would guess? Anyone have these installed? https://www.spmsracing.com/2015-2016...rt-bracket-kit
As has been previously discussed those are not braces (that may or may not go across) but simply plates that fit on top. They are basically the motorsport part made available for street cars. They do not have all the benefits from a motorsport installation. Its just a marketing thing.
Ten was my high guess, which would be a failure rate of .4%. Pretty small for a car that gets routinely thrashed on the track. And everyone I read about was due to a track off or hitting curbing, so you can't even call those 'failures'.
And this isn't a Camry. It's a high performance sports car, with stiff suspension, where light weight is at a premium. It's not going to be as durable to impact as a Camry or a Ram truck. It is not designed to take massive impacts and be able to dissipate force like a car with softer suspension.
You're missing the fact that the point of failure should not be the strut tower...it is weaker than it should be relative to the loads that can be delivered to it via the wheel/tire (which should be first to fail) and suspension (which should be second to fail) before the strut tower fails. Nobody is saying that the car should be impervious to pot holes, we're saying that the failure mode shouldn't be the structure of the car failing.
I do not buy the excuse that this type of failure is acceptable because it is a high performance vehicle, those two are not mutually exclusive. There are plenty of cars (including Porsches) that handle well and do not shatter over potholes.
In the suspension, the strut tower is the worst possible component that could fail. It is difficult to fix, expensive to repair and cannot be replaced with a more durable part. If it was anything else it wouldn’t be as big of a deal as the wheel, control arm, anti-roll bar, shock, spring, etc. are serviceable in a home garage with basic tools & knowledge and can be upgraded with a different part.
I wouldn’t let this get in the way of buying the car if I really wanted it but it would be on my mind and I’d be extra cautious about road quality, bumps, berms, etc.
Ten was my high guess, which would be a failure rate of .4%. Pretty small for a car that gets routinely thrashed on the track. And everyone I read about was due to a track off or hitting curbing, so you can't even call those 'failures'.
There is a thread in the 981 forum that has 8 listed as reported by RL members. You know that many get unreported because members are not on forums or don't want to report. And then there is the reality that they may post of having had the issue but did not want to be listed on a spreadsheet maintained by a RL member/volunteer trying to do a service to the community.
Was hoping this would have been resolved on the 718 with GT3 suspension. Now the Spyder gets infected with it too. Another plus for the GTS 4.0 vs the Spyder.
981 had the GT3 front end too.
Not sure it's a worthy plus for the 4.0. The issue isn't as common as the forums let on.
It's a bizarre post. Apparently its the rear and not the front.
982 Spyder?
Do you know the context of the damage on this one? I do know that some cars had shocks that were leaking and may not have had enough compression dampening...
991.1 GT3 engine fires were the result of con rod bolt failures and PAG quickly stopped production and sales. After investigation all the cars sold had engines replaced (roughly 800 iirc) and owners were compensated for loss of use. The finger follower issue emerged later and while it took some time, PAG acknowledged the problem and extended the engine warranty. Although disappointing to have such issues I think Porsche handled the 991.1 GT3 engine problems reasonably. M96 engine issues is a different story.
On the 718GT4 CS, there is a metal plate on the shock tower which is bolted via a rod to the front bulkhead and also bolted to an extension tube of the roll cage.
Yes sorry, finger follower resulted in extended warranties and was supported after Rob pursued with PCNA.
My point in the post was Porsche is not without issues. Their sh$t stinks sometimes too. Primarily aimed at halfmonkey for his knowledge as first time P owner.
There were several comments in German that were translated. Hard to follow. Supposedly happened while on the hwy while in 4th gear. He said that he did not hit a bump.
You're comparing a lightweight, high performance suspension system to a heavy, pedestrian system, the latter of which is optimized for the street, to soak up potholes, insulate the driver from the road, etc. Would you prefer that your GT4 had a Camry front end?
I would argue that any street legal Porsche product is not so high performance that the suspension is weak for the street. These cars are primarily street cars.
There were several comments in German that were translated. Hard to follow. Supposedly happened while on the hwy while in 4th gear. He said that he did not hit a bump.
Curious. Wonder if it is a casting, material, or QC issue.
07-22-2020, 07:55 PM
