81 911sc windshield replacement
 

Hi All,
New to owning a 911sc....trying to sort out various issues...including sourcing a new windshield either Sigla or Sekurit....andy suggestions welcomed.

Also having some hot start issues....Lamda system has been overhauled but I suspect there are some leaky injectors so not holding pressure....any thoughts?

I would like to find someone in the Portland Oregon area for some advice/help. thanks

Unless you know the seal is fairly new, get a new Porsche brand seal and have it for the windshield installer. Ask if they have done any old cars with a rubber seal. These have NO sealant or glue, just the rubber seal. If he wants to use some glue, find a different place. It is trick to get it in place, and centered properly. If it is done right, it will not leak.

I second the suggestion to find someone who is familiar with and replaces these on a regular basis. My insurance contracts through Safelite, so that is where I went initially. One recovered dash (they damaged it during their botched attempt at install) and 6+ months later.... I dropped my 84 off at one of the local air cooled shops. picked it up last night (they kept it overnight and installed the next day) with the windshield installed correctly. they installed with an factory Porsche seal and OEM (Pilkington) glass.

A 911SC has CIS injection. CIS= continuous Injection System. So they technically leak by design.
They are basically open all the time which is why they have the lifter in the airbox to prevent them from washing the cylinder walls when the key is on but the engine isn't started.

Yep, one guy I know that had a near perfect car had a large crack in the windshield from a rock. He was happy it hit the windshield and not the paintwork. He went to the local Porsche specialist body shop to have the windshield replaced.

That bodyshop is about the only place that can do the Targa rear window.

In some cities a large glass shop may have the "old grey" installer that has been around since the days many windshields were just held in place with a seal. If he has done it many times before and is not learning on your car, they may be a resource.

Thank you all for suggestions so far....does anyone know a great CIS person in the Portland area?

thanks in advance

I would counter the "use a new Porsche seal" now. Back in the day for sure. Do some searching though and you will see many have been complain the factory seals are made in china and not as good as they use to be. I have also seen some folks comment about how ponder regulation mean the chemicals used to make the old Porsche seals (that made them so supple and good) are no longer able to be used (environmentalist whacko's! :D ). There is a very good thread about the new URO seal that has a 3mm wider outer edge. They specifically redesigned it to make its better than al of the old ones. A few friends have used them and I can vouch for that improvement. Mine is sitting here in its bag and is on the list to get swapped out. YMMV.

+1 here. Just went through some windshield seal issues. URO has a wider inside lip. I like it

Thanks lvporschepilot, it's actually our outside lip that's wider, not the inside.

But coincidentally we're considering making the inside lip a bit wider too, as a running change to the new seal design. Our engineering department is currently evaluating it.

Installing the windshield yourself is not terribly difficult, and extraordinarily satisfying. If you get the right thickness of rope and figure out how to loop it through the seal correctly, it's reasonably straightforward. And if you get it wrong, you can just push the glass back out and try again.

The rear quarter windows, on the other hand, are a NIGHTMARE. :-)


I had hot start issues with my SC many many moons ago. It ended up being the coil. I put in an MSD Blaster High Vibration Coil along with an MSD Streetfire CDI unit. Haven't had an issue since (6 years ago).

Excellent replacement for the rear quarter window seal is to use the
993 seal which is all rubber and has no metal trim. Much easier to install and they also look great!

Interesting! So the 993 seal works fine with no modification or other issues?

Rear coupe glass, with defroster, is a nightmare. Front glass is a snap. Using the glass as a template, make sure the metal trim is perfectly shaped. Put the gasket on the glass, then put the metal trim on the gasket, making sure the hooky part of the trim metal engages with the gasket everywhere. You can tell by running your finger along it. Then center the whole gizmo over the opening and rope it in while applying pressure to the outside edges of the glass where the rope is coming in. This can actually be done easily by one person.

Rear glass....take it to a competent shop. I will never do one again.

No modification required they just slip right in! After cursing the damned
four piece metal trim pieces while trying to get them seated correctly only
to have them pop out out of place, I checked around and found the tip
on the 993 seals, they are the cat's meow!

to add a little, you might want to add tape over the trim once you got it in the seal. The video on this does the same. He also has the rope loop stick out up top and pulls on both ends of the rope.

Here is the video on install

https://www.youtube.com/watch?v=-QAtR1LKOlw&app=desktop

My '82 911SC is in need of a replacement windshield. I'm looking for the best quality product for best fit and aesthetic, would like the dark green tint on top edge. I had a nice new PGW windshield installed last year unfortunately, a loose flying object from a flat bed truck smashed it. Apparently the PGW product is no longer available...any recommendations?

I'm in luck. I found a source for windshields to fit various Porsche models, "Kool Katz Auto Glass" located in Panesville, Ohio. Prices range significantly depending on the particular car model. For my '82 911SC it is $358 shipped. The part number sticker says this product is made in China, it is green tint with dark green tinted shade band along the top edge.
https://koolkatzautoglass.com/collec...-oem-brand-new

Extremely disappointing that Porsche charges a premium price for their products/parts yet has them made in China.

Mine has been a the dealer 3 times and they have no idea what they are doing.