Jump to content

The RennTech.org community is Member supported!  Please consider an ANNUAL donation to help keep this site operating.
Click here to Donate

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

Recommended Posts

This is a project I've been wanting to tackle for a while, but I just recently was able to afford a new set of headlights, so I could pull these out to experiment on them. My 996 headlights have yellowing on the inner lenses from the heat of the bulbs.


My first question is, has anyone succesfully done this before? I'm hoping that if I can get to the inside of the lenses, I can scrub them with toothpaste or headlight polish and remove the yellowing.

The second question is how do I get to the inside of the lens? If I can devise some sort of long skinny scrubber to reach in through the bulb hole that would save a lot of work, but I have doubts that I can make that happen.

The other option is to bake the headlight in the oven sitting on a big block of wood at 300 degrees F for 3 minutes then attempt to pry the outer lens off. Then I could unscrew and remove the reflector and repeat the process to remove that inner lens. At that point I could finally attempt to clean the lens or install HID projectors.

Any advice or words of experience before I start these experiments?

Link to post
Share on other sites
    You can remove these ads by becoming a Contributing Member.

I tried the oven job on a tail light that I replaced a while back. I ended up bending the lens but it did come off. I might of cooked it a little too long. I think I was at 250 for about 20-30 min. I have a old front light now and have been thinking of putting a hole in it to try the polish thing.

Edited by carsareart
Link to post
Share on other sites

I found a Reach toothbrush that bends backwards and spent some time scrubbing through the bulb openings with toothpaste and another polishing compound. No luck. There are projectors from broken Litronics on eBay maybe if I can open the lens I could swap those in.

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.