New Porsches have done away with "vent" glass as have most modern cars so this feature should be on the Neo914. Apparently this has been done by someone in AK but was too much custom work such that it required constant adjustment and the fabricator would not duplicate them based on these problems. The person telling me the information guessed the donor glass came from a Jeep. Miles claims one was done with Miata door glass but they come with a vent window like the 914…? (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif)

Installing them will require a triangle "filler" so the front rail will have enough space to be mounted and there will be more than a "point" of the glass in the rail. There are two metal pockets that strengthen the hinges and there is a door stop mechanism which will interfere with a rail at the forward side of the door. Since the door is relatively short, there is very little room for structure below the window to firmly hold the window upright in extension. Some doors actually bond a mount up on the glass for the lifter. If I can’t find an existing side glass that works I'll go ahead and cut a plexiglass piece to develop the lift mechanism. If there is enough interest I’d consider having them manufactured. I’ve got tooling estimates and they can produce them out of tempered or laminate glass. A kit may not be feasible since the door will require cutting and fabrication to fit the glass, rails, and mechanism. It would likely be a complete door with core charge.

The door and various pieces, including an electric window motor from a Mercedes...

Here’s the door glass pieces, notice the "notch"...

I traced a single piece template of the two pieces. The dimensions are ~33” long and ~17” max height...

I test fit the template on dozens of cars at a dismantler and found very few modern cars have windshields with the positive angle or rake of a 914. Every car including commuters had lower rake and wide radius’ between the front edge and top of the glass. I began to look at 70’s and 80’s coupes of which only a SAAB has a more upright rake. Need to make a more rigid template! (IMG:http://www.914world.com/bbs2/html/emoticons/screwy.gif)

VW, Volvos, and BMWs had lower rake. I didn’t’ have a chance to look at Jeeps…Matching the front rake AND rear angle is the challenge. I actually found something close within ½” but the A-pillar has a sharp radius and the front corner is not cut off which is necessary for rail fitment. (IMG:http://www.914world.com/bbs2/html/emoticons/idea.gif)

What about MR2 or Fiero or similar? Saw many of those at local dismantlers.
-B

heh damn if they aren't! I was told the glass was out of a Miata door... can't be so.

(IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)


M

QUOTE (Brent @ Sep 5 2005, 12:00 AM)

What about MR2 or Fiero or similar? Saw many of those at local dismantlers. -B

Fiero had alot more rake and radius at the top of the a-pillar plus it is wider. No MR2's at Commercial St. PNP but it's interesting how many cars have much more lower rake than the 914's. Even the upward seated cars (taller) have more windshield rake, dam stylists... (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif)

Can anyone substantiate this:

QUOTE

The major problem you will face is glass support. The factory in late 72 decided to go with solid glass to cut cost. What they found was that less than 2 inches of glass was left in the door when the window was rolled up. This was not enough support and let the glass move in and out not letting the window seal. So they built a big T looking brace then they had to box the upper structure of the door to support the brace.  They found it would cost more to re-tool their equipment to make the changes than it would save in the long run

Hi Felix

I have been looking into this for about 10 years, and have came to the same conclusion, retro fitting something else.
I plan to rake my widshield...if you can PM me to whats close (car model) for a rake. Also what is the blue car? It looks like a RX7 ?
I have the CHT catalog. Inside they have many models of universal fit regulator/motors, lots of hardware including glass mounting and rails with squeagys. Thats the route I,m taking but I think you are going for a more OEM mod.

Thanx for the research, I think this is a viable mod.
Later

(IMG:http://www.914world.com/bbs2/html/emoticons/beerchug.gif)

QUOTE (MecGen @ Sep 5 2005, 01:49 AM)

Hi Felix I have been looking into this for about 10 years, and have came to the same conclusion, retro fitting something else. I plan to rake my widshield...if you can PM me to whats close (car model) for a rake. Also what is the blue car? It looks like a RX7 ? I have the CHT catalog. Inside they have many models of universal fit regulator/motors, lots of hardware including glass mounting and rails with squeagys. Thats the route I,m taking but I think you are going for a more OEM mod. Thanx for the research, I think this is a viable mod. Later (IMG:http://www.914world.com/bbs2/html/emoticons/beerchug.gif)

I seriously contemplated raking the windshield then you would only need to match the width and the b-pillar rake. I wish there was a database the windshield companies would let you view...

New is not out of the question but I'd have to "invest" in tooling...

I can go and do the dirty work for you. I will take many picks with my new point and shoot.
-B

QUOTE (Brent @ Sep 5 2005, 02:06 AM)

I can go and do the dirty work for you. I will take many picks with my new point and shoot. -B

Brent, that would be great, I'd pay you for it since It would allow me to have something to visualize and plan the mounts.

My daughters having a play date so gotta make sure they don't get hurt or hurt each other. (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif)

Here's the planned end result for those who missed the Neo914 thread...