Carbon fiber ventilation bypass tube
03-04-2006, 03:26 PM
#1
Burning Brakes
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Carbon fiber ventilation bypass tube
Hi all,
My blower motor recently started squeaking. I was looking to replace it when someone suggested the RS ventilation bypass tube. After researching and reading the pros and cons, I decided it may be something I'm interested in.
This would be a good weight savings as well as more being convenient for me to service the car when the times comes since there is less to take out.
I found one at Pelican Parts that I like, but I was wondering if any of you 993'ers have had any experience with its quality?
I am cautious when buying carbon fiber without references. If this were some sort of metal, it wouldn't be an issue.
Pelican says their CF tube is 7.9 oz instead of 15 pounds for the whole blower assembly. (Though I weighed all of my blower assembly and tubes to be just about 10 pounds, that's still quite a difference.)
Picture:
Does anyone have this installed or have any experience with it?
Thanks,
Harry
My blower motor recently started squeaking. I was looking to replace it when someone suggested the RS ventilation bypass tube. After researching and reading the pros and cons, I decided it may be something I'm interested in.
This would be a good weight savings as well as more being convenient for me to service the car when the times comes since there is less to take out.
I found one at Pelican Parts that I like, but I was wondering if any of you 993'ers have had any experience with its quality?
I am cautious when buying carbon fiber without references. If this were some sort of metal, it wouldn't be an issue.
Pelican says their CF tube is 7.9 oz instead of 15 pounds for the whole blower assembly. (Though I weighed all of my blower assembly and tubes to be just about 10 pounds, that's still quite a difference.)
Picture:
Does anyone have this installed or have any experience with it?
Thanks,
Harry
Last edited by Euromagination; 03-04-2006 at 04:50 PM.
03-04-2006, 03:34 PM
#3
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These are all made by Thom Fitzpatrick in Sacremento. You are better getting one directly from him. I posted some caveats about the RS and CF tubes recently. There is a slight reduction in engine cooling with them versus the fan assembly. Not bad for most street driving. Hot days on a track and I would just block the opening off the fan.
03-04-2006, 04:11 PM
#4
Burning Brakes
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Originally Posted by viperbob
These are all made by Thom Fitzpatrick in Sacremento. You are better getting one directly from him. I posted some caveats about the RS and CF tubes recently. There is a slight reduction in engine cooling with them versus the fan assembly. Not bad for most street driving. Hot days on a track and I would just block the opening off the fan.
I saw that some people were blocking the opening of the fan for hot days as well as track days. Is it really that big of a concern?
03-04-2006, 05:56 PM
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There is a flapper valve in the fan assembly controlled by the CCU. If you do not need heat, it closes and all the air from the fan goes through the engine. The RS pipe removes this flapper. So air is always flowing from the fan, through the pipe and down under the motor. Now if the vents are closed on the inside cockpit by the CCU saying no heat required, this air just goes out through the vents under the engine.
