Why does Porsche use valve stem supports?
01-02-2003, 04:10 PM
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Why does Porsche use valve stem supports?
Do they find the valve stems to be that much of a problem they have to use a support? I know they do on the 911.
Does it really affect the rotational inertia(or whatever it is) of the wheel if they are not used?
Porsche does use these on new cars. Are they just being **** about stuff as usuall or would this really make a difference?
The reason I ask is because I have a set of the sport emblem valve stem covers here. When they came in, I showed my boss and we got talking about them. He mentioned to me that they are heavy (which are metal) and Porsche would never put something like that on thier car. He showed me pictures of the supports Porsche use to hold thier valve stems stable and facing more toward the outside of the wheel, not sticking straight up. He told me to look into getting a set of supports to hold the valve stems in place if I was a real performance enthusiast..
What do you guys think?
I know they are heavy but is it that bad?
It really made me think when I thought about the weights they use to balance wheels and how much the weight was compared to the valve stem caps and its not that much of a difference.
Do you guys think these would have ANY adverse affects?
Does it really affect the rotational inertia(or whatever it is) of the wheel if they are not used?
Porsche does use these on new cars. Are they just being **** about stuff as usuall or would this really make a difference?
The reason I ask is because I have a set of the sport emblem valve stem covers here. When they came in, I showed my boss and we got talking about them. He mentioned to me that they are heavy (which are metal) and Porsche would never put something like that on thier car. He showed me pictures of the supports Porsche use to hold thier valve stems stable and facing more toward the outside of the wheel, not sticking straight up. He told me to look into getting a set of supports to hold the valve stems in place if I was a real performance enthusiast..
What do you guys think?
I know they are heavy but is it that bad?
It really made me think when I thought about the weights they use to balance wheels and how much the weight was compared to the valve stem caps and its not that much of a difference.
Do you guys think these would have ANY adverse affects?
01-02-2003, 04:14 PM
#2
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The reason be:
That a super high speeds, the valve stem will bend down due to rotational inertia, and doing that over and over could weaken the valve stems, and last thing you want is to lose tire pressure when doing 180.
I think its over doing it a little.....but thats what Porsche is all about.
I think its over doing it a little.....but thats what Porsche is all about.
01-02-2003, 04:17 PM
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another example of Porsche going overboard:
The rear brakes on my 944S: standard discs...but with a twist: the "hat" of the rotor is pretty large/deep, and houses another internal drum brake that is the parking brake. So, just imagine how expensive those parking brake shoes are....I found out after I bought the car and noticed them getting weak due to the previous owner driving around with the parking brake on.
01-02-2003, 04:40 PM
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last of the air cooled.. and the bug eye.. and the turbo tail..
and i really like the fact that you can drop your engine and tranny with a floor jack!! in like 30 mins.. now.. that is cool!
