When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Modified the Cayman, not sure if I like it? (Shift Cable)
Switched to Numeric Shifter cables, combined with my short shifter... I love the new shift action feels very strong like a race car. The car
is easier to drive "on/off" shifts like a light switch, no stalling or bogging down, amazing short throws. But I'm not sure I'm going to keep the mod as I am getting noise in the car that is not a rattle or vibration but "sounds like" white noise static on the radio or a louder fan problem in the dash from a faulty AC fan. When I take the car out of gear the noise goes away, so I know its the all-metal shifter cables(Porsche's design has lots of plastic and rubber in the cables). I hate to go back to stock but turning up the radio to drown out the mechanical noise is fine when I'm alone but not good for long trips with a passenger. Any suggestions? I wrapped the cables with extra padding and again am not getting any vibration or rattle, just some kind of noise transmitted by the metal cable (like the working principle of an electric guitar if I had to describe it in my own non-engineer way). I now realize that Porsche engineered the sound in the car, and when you mod a component you mess up the pleasant sound and get a mechanical industrial sound (every wonder why the sound isn't pleasant when you get in-car shots during televised race coverage?). I hate to put it back to stock, but I use to be able to hear every note of the engine and now I can't get a crystal clear read of what the engine is doing and I miss that. My wife likes the shift action, (like a hammer, she's tuff) but she mentioned the "luxury is gone" and I agree that Porsche did a great job making this car both sporty and luxurious for a serious sports car. (I'm not a wimp, but mechanical noise is just not fun).
My wife voted to keep the noise as she likes the rifle bolt action of the Numeric Cables shift action. I just miss being able to hear the mechanics of the engine... with the extra static or fan sounding white noise I can't tell if anything is wrong or out of tune on the engine. The extra layer of industrial noise is masking those little things I use to be able to monitor with my ear.
Porsche has come out with new parts to work with their orginal shifter cables. Has anyone seen how they are mounted or a diagram showing how they work?
The cables are transferring the noise from the transmission through the cables because they are a more direct fit. I don’t use plastic rod ends like stock because they have more play in them. I use aluminum rod ends so that there is no play improving your shifts. I have had several customers use 3/8 or 7/16 ID fuel line and say the noise went completely away. I have used silicone tubing with success but it’s more expensive to use. The foam that’s on the stock cables doesn’t seem to work very well. You can pick up the fuel line from any auto parts store. 10 feet should be enough to do both cables. I need to update the directions so everyone knows what to do.
"The cables are transferring the noise from the transmission through the cables because they are a more direct fit. I don’t use plastic rod ends like stock because they have more play in them. I use aluminum rod ends so that there is no play improving your shifts. I have had several customers use 3/8 or 7/16 ID fuel line and say the noise went completely away. I have used silicone tubing with success but it’s more expensive to use. The foam that’s on the stock cables doesn’t seem to work very well. You can pick up the fuel line from any auto parts store. 10 feet should be enough to do both cables. I need to update the directions so everyone knows what to do."
Daniel Geberth
[img]cid:image001.jpg@01D1DDFD.57A91C20[/img]
I installed the cables and also found the noise objectionable. But putting silicone hose over the cables helped. Also, make sure you reinstall the grommet at the firewall. The Numeric cables are larger diameter so the grommet does not fit as well. I used some dynamat on top of the grommet to seal out the noise. I also carefully put dynamat around the linkage in the console, making sure I wasn't inhibiting movement but still sealing the area. In the end, I thought the noise was no more than stock.
Bern
Just had the cables professionally installed and love the feel. The sound is a bit louder than I expected. Does anyone know if the insulating cables that numeric sells can be put on after install?
Check to make sure the cables are properly in the brackets and not resting against the metal cover under the carpet on top. I had a similar issue as well and once I made sure they were in the proper orientation and not touching the cover, it made it much quieter inside the car.
The Numeric website says to cut their tubing in a spiral cut, so if you do that the tubing can be fitted onto the shifter cables after the cables were installed. Some folks I know used pipe insulation which came slit from the factory and held it in place with zip ties. I bought silicone tubing from my local Autozone store, slit it, and used zip ties to hold it in place along the entire lengths of the two Numeric cables in my 987CS.
Does it matter how strongly you zip tie the tubes? I wouldn’t want to interfere with the function of the cables. Is there anything NOT to do?
The zip ties I used were the smallest (shortest) ones I could find that could fit around the silicone tubing once it was fitted around the shifter cables. The zip ties I used would probably break before they could be tightened enough to interfere with the function of the cables. They need only to be snug.
I have the same noise issue and yes; it drives me crazy if I have the radio off. I feel your pain
Originally Posted by Mark(study)
Switched to Numeric Shifter cables, combined with my short shifter... I love the new shift action feels very strong like a race car. The car
is easier to drive "on/off" shifts like a light switch, no stalling or bogging down, amazing short throws. But I'm not sure I'm going to keep the mod as I am getting noise in the car that is not a rattle or vibration but "sounds like" white noise static on the radio or a louder fan problem in the dash from a faulty AC fan. When I take the car out of gear the noise goes away, so I know its the all-metal shifter cables(Porsche's design has lots of plastic and rubber in the cables). I hate to go back to stock but turning up the radio to drown out the mechanical noise is fine when I'm alone but not good for long trips with a passenger. Any suggestions? I wrapped the cables with extra padding and again am not getting any vibration or rattle, just some kind of noise transmitted by the metal cable (like the working principle of an electric guitar if I had to describe it in my own non-engineer way). I now realize that Porsche engineered the sound in the car, and when you mod a component you mess up the pleasant sound and get a mechanical industrial sound (every wonder why the sound isn't pleasant when you get in-car shots during televised race coverage?). I hate to put it back to stock, but I use to be able to hear every note of the engine and now I can't get a crystal clear read of what the engine is doing and I miss that. My wife likes the shift action, (like a hammer, she's tuff) but she mentioned the "luxury is gone" and I agree that Porsche did a great job making this car both sporty and luxurious for a serious sports car. (I'm not a wimp, but mechanical noise is just not fun).
My wife voted to keep the noise as she likes the rifle bolt action of the Numeric Cables shift action. I just miss being able to hear the mechanics of the engine... with the extra static or fan sounding white noise I can't tell if anything is wrong or out of tune on the engine. The extra layer of industrial noise is masking those little things I use to be able to monitor with my ear.
05-17-2018, 04:01 PM
Modified the Cayman, not sure if I like it? (Shift Cable)
