Hi Phil,

Congratulations and welcome to the world of Targa's...nothing like driving in that well lit cockpit as well as fighting leaks....

I found that the way the sliding panel is aligned really changed how that rear drip strip you are talking about dripped. When the roof is closed the rear of the roof rises on a cam on each side. The water in the gap runs down to either end of the wide rubber seal and drips into the channel just like you said...but if the roof is slightly off it won't all drip but, through surface tension, gap onto the paint on the inside of the roof and run down the inside of the body to eventually soak behind the carpets or fall short and miss the channel.

I played with the adjustments of the rear rising cams....you can see the 6mm (or something like that) allen head screws (two on each side). Loosen them with the roof closed, push the rear of the sliding panel up, and retighten until the top is close to flush.

How is the alignment of the rear of the sliding panel with the rear window?

Cheers,

Mike

 

Thanks Mike, I will have a look this weekend, I believe the alignment is good, the car has however had a rear screen replaced but I don't think that would have any impact. Will keep you informed.

 

I guess by "rear screen" you mean rear window? It should not affect it depending on how well the glass guy took his time taking the old one out. Its a tight fit and you need good blade technique. If he was wrestlin' in the back seat he could have pushed on the sliding section by mistake (if the roof was not open) etc.

When its raining or with a garden hose get the car continually wet and sit in the back seat of the car. Use a flashlight and watch how the water drips....and you might get a hint on what is going on.

Cheers,

Mike

 

I had a 964 targa............wot a bastard it woz for leakage...........I eventually spoke to a Yacht chandlers and had a bilge pump and internal guttering fitted to the car along with discount scuba lessons at the local swimming baths, however had to sell because eventually, a seal colony took up to much space on the passenger seat. Can't believe with all this fancy german engineering...........they haven't sorted it in the 993!!

 

Well, its better....we don't have rain showers inside but its more like a fine irish mist..

 

message for Leland-heard you might know good shippers to europe for my 993-moving to Sweden
95 c2 Polaris-sport chassis and European suspension from porsche-euro cat-motor sound package -with large **** -chipped-litronics-chrome interior package

 

Anyone know how to damped the wind noise?? I have a '98 Targa and when the top window is open it is bearable, but boy when it is closed, it is noisy as hell..

Cheers.
Michael

 

Your roof may need adjustment. If you want to try get the TSBs...see the beginning of this thread. Mine has very low wind noise. It depends on the some height adjustments to stop whistling. Is the noise a whistle or howl or?

Cheers,

Mike

 

Well it is kind of in-between a whistle/howl.. Let's put it this way, can not do a call while the roof is closed even with a headset on and have to resort to keeping it open which can be a drag in the rainy season here.. I'll check the thread again.

OK, read it all again, and the thing is no leaks on my roof just the noise factor, so the question really is what can I do to adjust the closure of the roof, so perhaps it is a bit tighter. I noticed the hex screw on the bar that folds to open/close and figured it is there? Or is there another place to adjust it?

Also, on a similar topic, my bars are bent for the green house screen, anyone have an explosion diagram of the roof? Would love to see exactly I need to move since the bars seem salvageable without having to spend $$ at a dealer or mechanic to fix it. I can see how it looks kind of on the right hand side, but I am sure that there is another fixture that is keeping straight and fixed that I can loose to maneouver the bar back into it's proper place. The roof still opens and works, just need to adjust the screen so I am not baking on those hot summer days. I find it better just to open the roof and don a hat to keep cool vs cranking the air.. but would still like to get it back in function, the screen that is.

Cheers

 

OK got it up to 120 Mph (almost got tagged twice sneaky bastards..) this morning, it is definitely a whistle.. that is almost loud enough to fit into the howl catageory..

 

Mine is as noisy as a rocket on re-entry. Not because the deflector needs adjusting, but because the large retractable roof has become mis-aligned and actually sunk down a few millimeters.

 

So question is, how do you tweak the adjustments on the deflector?? Is it the bars on the side??

 

Its a combination of course... ;-)

1 - The deflector front and back adjustment is via shims on the hinge mounts. If you take them off there are some shims underneath. This usually does not need adjustment but it moves the class forward/back, either putting more pressure on the front seal or tightening up the gap on the sliding glass seal.

2 - The up and down distance can be adjusted by the little nuts on the arms that swing up the visor. You can see them on each side.

I think the large roof has adjustments for the front as well...I have not played with them. I have played with the rear slides on the main roof, that affects how high the rear of the roof goes when the roof is closed. I assume the fronts have the same adjustment, and in fact I am going to start looking soon since my roof, now that's its a year old, is getting settled in and is slightly out of adjustment.

The shop manuals suck for the roofs and the TSB's are marginally better. I am not sure how one knows how to really adjust the roof unless its in the Porsche training.

I do know the one thing I do not fiddle with is the cable adjustments...apparently its easy to get the roof pulling out of alignment and its a real challenge to get right. I can't confirm this personally though!

Cheers,

Mike

 

HI Mike J,
Having only recently bought my 993 Targa (one week ago ), I have found the foam under the carpet in the OSR (UK car) to be sopping wet.. It looks like I will have to follow your guidance to locate this leak.
The seals on the Targa roof appear okay but I wonder if they have shrunk with age (11 year old vehicle). They appear to be about 8mm short as if the rubber has contracted over time. I wonder if it is a big job to replace both the front and rear seal (they squeak when wet and closed...) - any idea?

Cheers

Dave T

 

Can you post pictures? I am not sure what seals you are talking about. I have chased all sorts of water problems, but now am leak free. I had to drive the car for the last two weeks, in pouring rain, and everything is good, so it is possible (now of course I have jinxed myself).

There are several points to check, so if you can post pictures and details, that would help. There are a few other Rennlisters also who are quite knowledgeable on these roofs, and perhaps they will comment as well.

BTW, the seals (other than the main one across the top of the windshield frame to the roof) are not totally waterproof, but designed to drain if they leak. For instance, the seals that seal the sliding window when it closes, if leak, drip water into the two side channels (one on each side of the car), and into drains in the back.

BTW, what is OSR?

Cheers,

Mike

Cheers,

Mike