Steel lower control arms? GTC3 and GTC2
From the 2019 PCA Racing Rules: "GTC2 and GTC3 cars are allowed to replace the pressure-cast aluminum control arms with steel control arms of identical dimensions."
Is anyone selling steel lower control arms? |
My car has the steel Fabcar arms on it. Not sure if Dave Klymm still makes them or not.
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Dave closed Fabcar in 2014.
I wonder if anyone else wants to make these approved replacement parts. I was surprised to see the PCA rule allowing steel because factory parts are readily available. |
We have 997 Forged lower control arms available if needed
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Don't look GTC3 legal. |
I have a pair of the fabcar arms I am willing to part with if someone is interested.
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This is interesting. I can look into this. But, is it really the pressure cast arms that are the issue, or is it that the pin breaks after a period of time.
We changed our car to the Cup S control arms which have a separate pin from the control arm all together. This way we can keep the control arm and change out the pin. And, the Cup S pin is a stronger (more durable) part. Thanks Ed |
Originally Posted by Ed@Demonspeed
(Post 15678947)
We changed our car to the Cup S control arms
Ed, is the part otherwise the same? |
Originally Posted by Ed@Demonspeed
This is interesting. I can look into this. But, is it really the pressure cast arms that are the issue, or is it that the pin breaks after a period of time.
We changed our car to the Cup S control arms which have a separate pin from the control arm all together. This way we can keep the control arm and change out the pin. And, the Cup S pin is a stronger (more durable) part. Thanks Ed |
Originally Posted by bmwtye
(Post 15679527)
Do you have pics of these cup s parts?
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Originally Posted by powdrhound
(Post 15679589)
I think he's talking about the trunnion pins on the RSR LCAs. It's made out of Vascomax which is a high strength 300M vacuum remelt steel. PM has these available in 3 lengths (72/76/82mm) which allow you to fine tune the roll centers. I've been using these on all 4 corners for many years with success.
Thanks Ed |
So which of the 3 pins that PM/PMNA offers would maintain "stock" roll centers if we were to obtain agreement from Walt & Co. about this kind of change?
Toby |
Originally Posted by Toby Pennycuff
(Post 15682435)
So which of the 3 pins that PM/PMNA offers would maintain "stock" roll centers if we were to obtain agreement from Walt & Co. about this kind of change?
Toby |
Can the factory cup control arms be modified to accept these pins? I also have a tough time believing the arm itself would actually fail.
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