air noise targa wind defector
11-11-2002, 02:48 PM
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air noise targa wind defector
Please advise if others are experiencing this problem. Air noise sometimes a whistle or air noise is louder than at other times. If I lower the windows when shutting wind defector it shuts better.Also if does not shut tight when you are up at speeds of 50mpr or more. Any suggestions??
11-11-2002, 03:30 PM
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The targa has e verry complicated and delicate system. I know this because i have taken the hole targa roof(it is almost a convertible) almost off and completely dissasembled the targa interior.And this because one of the wires that drags the roof broke!!
I hope this does not happen to anyone because Porsche dealerships dont have much experience with these delicate and rare cars when it concerns targa roofs..
I have enough experience with this system however and i can tell you that your problem needs some adjusting.However the thing is, is it the wind deflector or the targa roof. They are both adjustable.The wind deflector in the front part has two screws on each side holding it in place. For the roof itself there are some screws on the piece that drags the roof to the rear. This might not help you much so i will e-mail you a pic of the system and hopefully it might give you some insight.Good luck
Nick 993 targa 1997
I hope this does not happen to anyone because Porsche dealerships dont have much experience with these delicate and rare cars when it concerns targa roofs..
I have enough experience with this system however and i can tell you that your problem needs some adjusting.However the thing is, is it the wind deflector or the targa roof. They are both adjustable.The wind deflector in the front part has two screws on each side holding it in place. For the roof itself there are some screws on the piece that drags the roof to the rear. This might not help you much so i will e-mail you a pic of the system and hopefully it might give you some insight.Good luck
Nick 993 targa 1997
11-11-2002, 03:45 PM
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Hi Ddixon,
I have a 96 Targa. If the roof is fully closed my roof does not whistle at any speed.
If the vent is open and you try to close at speed the differential air pressure between the cabin and the area outside the roof will not allow it to fully close and you will get a bit of whistling. Don't forget a Porsche is shaped like an aircraft wing! My understanding this is a limitation of the roof design. However, once the car is slowed down the air pressure differential is lessened and the roof will fully seal. This also explains why if you open the window the air pressure differential is equalised and the roof will seal and stop whistling.
However, if its whistles if the roof is fully closed then you need to adjust. The vent adjustment is not that difficult...open the vent and you can see the roof is held up on two arms..the arm mounts to the vent glass frame are slotted for adjustment. Take it slow and easy.
I have had the roof of the car as well, but this the removal of the entire roof, frame and class all in once piece off the body to fix a leaking seal on the windshield frame seal and a slight trace of rust under the seals. Porsche paid for the entire work so I am happy about that!
Hopefully Nick's pictures can help!
Cheers,
Mike
I have a 96 Targa. If the roof is fully closed my roof does not whistle at any speed.
If the vent is open and you try to close at speed the differential air pressure between the cabin and the area outside the roof will not allow it to fully close and you will get a bit of whistling. Don't forget a Porsche is shaped like an aircraft wing! My understanding this is a limitation of the roof design. However, once the car is slowed down the air pressure differential is lessened and the roof will fully seal. This also explains why if you open the window the air pressure differential is equalised and the roof will seal and stop whistling.
However, if its whistles if the roof is fully closed then you need to adjust. The vent adjustment is not that difficult...open the vent and you can see the roof is held up on two arms..the arm mounts to the vent glass frame are slotted for adjustment. Take it slow and easy.
I have had the roof of the car as well, but this the removal of the entire roof, frame and class all in once piece off the body to fix a leaking seal on the windshield frame seal and a slight trace of rust under the seals. Porsche paid for the entire work so I am happy about that!
Hopefully Nick's pictures can help!
Cheers,
Mike
11-11-2002, 04:09 PM
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Thank you Mike and Nick for the quick responses!! As a first time member I am impressed with time on the e-mails back. One more question --is it normal to hear some air noise not whistling just rushing sound?? Since there is a form of a handle on the roof I assume this creates some noise naturally??? What is the handle for??? Dale
11-11-2002, 09:12 PM
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Hi Ddixon,
I concur with all the others have said re: the roof and adjustments. I had more of a whistling problem when I bought the car, and did a series of things to help correct the problem:
- looking at the rubber seal on the leading edge of the roof, where the wind deflector seals when closed, I noticed there were a few places along its edge where too much weatherstrip adhesive had been applied at the factory. I used a razor blade to trim this extra adhesive off so the weatherstrip would not have any bumpy irregularities across its length.
- I adjusted my wind deflector as well, using the slotted adjustment points on either side. In my case I even had to use a small file (an ignition file worked well) to file down one of the brackets, where some extra casting flashing was interfering with the adjustment.
- I lubricated the weatherstrip mentioned above with a rubber protectant (pick your favorite brand). I repeat this every month or so when detailing the car.
After the steps mentioned above, I rarely get any whistling noises, although it does still happen from time to time. Some wind noise is normal, but having not ridden in a couple or cab I don't know how it compares to what you'd get there.
As far as the "handle" goes on top of the wind deflector, I'm not sure. I presume it aids the aerodynamics of the car in some way. All I know is it's neat to watch light rain swirl around it when you're driving down the interstate.... (of course, I only do that when I'm the passenger in the car!)
The Targa's a great car, dontcha' think?
<img src="graemlins/beerchug.gif" border="0" alt="[cheers]" />
-Chris
I concur with all the others have said re: the roof and adjustments. I had more of a whistling problem when I bought the car, and did a series of things to help correct the problem:
- looking at the rubber seal on the leading edge of the roof, where the wind deflector seals when closed, I noticed there were a few places along its edge where too much weatherstrip adhesive had been applied at the factory. I used a razor blade to trim this extra adhesive off so the weatherstrip would not have any bumpy irregularities across its length.
- I adjusted my wind deflector as well, using the slotted adjustment points on either side. In my case I even had to use a small file (an ignition file worked well) to file down one of the brackets, where some extra casting flashing was interfering with the adjustment.
- I lubricated the weatherstrip mentioned above with a rubber protectant (pick your favorite brand). I repeat this every month or so when detailing the car.
After the steps mentioned above, I rarely get any whistling noises, although it does still happen from time to time. Some wind noise is normal, but having not ridden in a couple or cab I don't know how it compares to what you'd get there.
As far as the "handle" goes on top of the wind deflector, I'm not sure. I presume it aids the aerodynamics of the car in some way. All I know is it's neat to watch light rain swirl around it when you're driving down the interstate.... (of course, I only do that when I'm the passenger in the car!)
The Targa's a great car, dontcha' think?
<img src="graemlins/beerchug.gif" border="0" alt="[cheers]" />
-Chris
11-12-2002, 01:11 AM
#7
Hi Dixon,
It's funny that you mentioned this wind noise issue. I began to notice louder than usual wind noise (not whistling, just noise) last week coming back from golf. It was noticeable around 90 km/hr.
I hope that the suggestions from Nick and Mike will help you solve the problems.
Has anyone done anything specific to reduce the squeaking sounds on the targa top? I was thinking of adding a layer of ahesive sponge (maybe 0.5 mm thickness) along the edges of the glasses (main top & air deflector).
Any comments or suggestions. By the way, has anyone actually purchase the "technical bulletin" on Targa top adjustments? Is it worth the price?
It's funny that you mentioned this wind noise issue. I began to notice louder than usual wind noise (not whistling, just noise) last week coming back from golf. It was noticeable around 90 km/hr.
I hope that the suggestions from Nick and Mike will help you solve the problems.
Has anyone done anything specific to reduce the squeaking sounds on the targa top? I was thinking of adding a layer of ahesive sponge (maybe 0.5 mm thickness) along the edges of the glasses (main top & air deflector).
Any comments or suggestions. By the way, has anyone actually purchase the "technical bulletin" on Targa top adjustments? Is it worth the price?
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11-12-2002, 09:49 PM
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[quote]Originally posted by red targa:
<strong>By the way, has anyone actually purchase the "technical bulletin" on Targa top adjustments? Is it worth the price?</strong><hr></blockquote>
I have a copy of the bulletin I got from my mechanic (there are a couple actually -- one on noise, another on addressing water entry problems). Haven't read them yet though to see how useful they might be, but hope to take a look this weekend.
-Chris
<strong>By the way, has anyone actually purchase the "technical bulletin" on Targa top adjustments? Is it worth the price?</strong><hr></blockquote>
I have a copy of the bulletin I got from my mechanic (there are a couple actually -- one on noise, another on addressing water entry problems). Haven't read them yet though to see how useful they might be, but hope to take a look this weekend.
-Chris
11-13-2002, 06:28 PM
#9
Hey guys,
Sorry I'm late joining the thread...been travelling....
There are about 10 pages of tech bullitens that deal with Targa roof noise, sqeaks, and rattles. I've applied some but not all.
I've not adjusted my wind deflector but have measured it and confirmed that it is in spec. One of the manuals indicated that the trailing edge of the deflector should be slightly higher than the leading edge of the main roof slider.
As I was getting a bit of wind noise, I was about ready to adjust it to close tighter but didn't after reading the spec. How do yours line up?
Curtis
Sorry I'm late joining the thread...been travelling....
There are about 10 pages of tech bullitens that deal with Targa roof noise, sqeaks, and rattles. I've applied some but not all.
I've not adjusted my wind deflector but have measured it and confirmed that it is in spec. One of the manuals indicated that the trailing edge of the deflector should be slightly higher than the leading edge of the main roof slider.
As I was getting a bit of wind noise, I was about ready to adjust it to close tighter but didn't after reading the spec. How do yours line up?
Curtis
11-13-2002, 10:18 PM
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Well, I just got my car back today from theP-dealer regarding the air noise. Basically,
the mechanic (28 yrs.exp.) advised the noise is normal. All targas have it some more some less. He taped the entire top off and there was still air noise. I did apply a piece of velcro across the entire rubber gasket on the main glass unit. This took away the whistling at hig speeds. The air noise was lessen although still apparent. The P-mechanic felt this fine although, I haven't checked to see if its water tight. I guess if you own the car get used to noise and enjoy the driving,trackingand utter thrill of the porsche. Lastly, I did get my wiring harness ordered and they will install next week. 7-10 days for part to come in and 1 day to install.
Dale
the mechanic (28 yrs.exp.) advised the noise is normal. All targas have it some more some less. He taped the entire top off and there was still air noise. I did apply a piece of velcro across the entire rubber gasket on the main glass unit. This took away the whistling at hig speeds. The air noise was lessen although still apparent. The P-mechanic felt this fine although, I haven't checked to see if its water tight. I guess if you own the car get used to noise and enjoy the driving,trackingand utter thrill of the porsche. Lastly, I did get my wiring harness ordered and they will install next week. 7-10 days for part to come in and 1 day to install.
Dale
11-14-2002, 11:03 PM
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[quote]Originally posted by Curtis - '97 Targa:
<strong>As I was getting a bit of wind noise, I was about ready to adjust it to close tighter but didn't after reading the spec. How do yours line up?</strong><hr></blockquote>
Well, mine lines up at the same level as the top itself, but that's because I adjusted it without having first read the spec you mentioned. (In fact, I haven't read any of the specs yet at all, so your post was the first I'd heard of the spec... <img src="graemlins/oops.gif" border="0" alt="[oops]" /> )
Seemed to lessen the noise, and cured the whistling I had been getting. And, aesthetically I think it looks better to be the same level as the top itself...
-Chris
<strong>As I was getting a bit of wind noise, I was about ready to adjust it to close tighter but didn't after reading the spec. How do yours line up?</strong><hr></blockquote>
Well, mine lines up at the same level as the top itself, but that's because I adjusted it without having first read the spec you mentioned. (In fact, I haven't read any of the specs yet at all, so your post was the first I'd heard of the spec... <img src="graemlins/oops.gif" border="0" alt="[oops]" /> )
Seemed to lessen the noise, and cured the whistling I had been getting. And, aesthetically I think it looks better to be the same level as the top itself...
-Chris
