How to make a 914 better than a 916, How to put a steel fixed top on your 914 Options

[grantsfo]

I think that's a nice addition, sunroof or not. My question about the addition of the roof is would it put added pressure on the windshield frame? I wouldn't mind doing the job on my car. Has anyone had any experience with the long term effects. It would be a shame if the windshield or windshield frame became damaged due to flex.. Just wondering If you have to do any structural work in that area first ????


I hated driving with my top on, but once I got a good rear targa seal and set up my rear glass using "two" panes its rather nice in the cab.

Thats a very good question. Base on my inspection of windshield hoop it certainly doesnt have much structural integrity. At least with targa there is some wiggle room.

[Spoke]

Is the 914 windshield hoop any weaker or stronger than other cars? It seems that most cars have minimal structure on the sides of the windshield.

Nice work.

[Root_Werks]

Is the 914 windshield hoop any weaker or stronger than other cars? It seems that most cars have minimal structure on the sides of the windshield.

Nice work.

I have cut into the windshield frame on a 914 to do this job. I personally think like most open top cars, they have much more support than coupes from the factory. I can't say if my 914 will have ill effects until I log more time behind the wheel, but rest assured, I am beating the crap out of the car daily driving it to and from Seattle. The freeway is all torn up right now (ground up black top). So far, the car has been taking it better than I could ever have thought. Now back to some more pictures....

[Root_Werks]

Same as the last shot I posted, just from the other side. Yes, I have 4 saw horses and 8 pairs of jackstands. (IMG:style_emoticons/default/biggrin.gif) You can see on the bottom one of my first versions was leaving that nice finished edge on from the 944. It seemed perfect, the way it sloped back in just like the 916, smooth factory finished edge even. Eventually, I found it just too much for me to make look "perfect". So it got cut off down the road. I'll show you what I did in its place.

[Root_Werks]

One of the local guys (Jeff H.) let me cut the rear targa roll bar and front winshield frame sections off of a soon to be scrapped 914. I learned very quickly I wouldn't have been able to do this without those pieces. You simply have to have them to help design and build the needed compound curves for the roof section. Here is another tossed out idea I had of cutting part of the windshield frame up to use and weld to the top to creat an exact 914 "curve". I never got to welding it on, I wound up building this part from scratch. Yuck.

[Root_Werks]

Here is another good shot of the two tops sitting close together. You can see how the main roof arc is almost a spot on match but still not quite wide enough.

[Root_Werks]

Here are those saw horses with the donor 914 top parts ready to be used as jigs and even welded onto the 944 roof section, well, parts of the donor parts anyway.

[Mr.C]

Why the suspense with the pictures? I'm American, I need it now!
OOPS! Your still adding.

[Root_Werks]

First trial of my side extensions. I didn't get any shots of the actual making or tooling of them, here they are lightly tac'd into place and set on the rear targa bar to check the fit and curve. These were the hardest parts because they have a radious that has to follow the top of the door window along with the curve that has to follow the top down to the sides AND still have a finished edge with NO body filler. Like I said before, yuck. (IMG:style_emoticons/default/welder.gif)

[Root_Werks]

More welding, more checking, pretty rough, but starting to come together, sort of. At this point, I was still thinking I was going to just toss the whole thing in the trash. Figured it was fun trying, but the back section just wasn't turning out like I hoped. This photo is still a LOOOOOOOONG way from fitting to any car.

[Root_Werks]

Bottom view, note the two flat surfaces. This is what I would mounting the window seal chanels to. They also get formed into a "box" that gets welded to the targa bar and windshield frame. Mucho strenth added because of that for sure.

[Root_Werks]

Last picture for tonight, getting tired. I wish I would have taken better pictures of this one. I wound up cutting the very top front of the donor windshield and grafting it onto the 944 roof section to get an exact curve match to my 914 frame. After carefully cutting and cutting I wound up leaving a 2 layer piece together which had a lot of strength to it. This ensured my welding the arc to the front of the 944 roof section would match spot on to my 914 winshield frame. Lots and lots of welding after this, folding down the "boxes" and welding them to the 944 roof section. At this point, I could set the top on my 914 and it looked just like the fiberglass top. Sat on there exactly the same. Next photos I start welding on my car! Doh! (IMG:style_emoticons/default/w00t.gif)

[Root_Werks]

Still thinking to myself; "I can still turn back, just put it all back together" My ultra exact red lines indicate what I had to remove from the rear targa bar to have the sunroof fit correctly. (IMG:style_emoticons/default/sawzall-smiley.gif)

[Root_Werks]

I can still just put everything back.....

Notice I cut off the back because I just wasn't happy with the ends or corners. I welded up metal, ground, welded, cut off, re welded, new metal, ugh, finally cut it all off and decided I just couldn't manufature that back finished piece. Having the back open for the attatchment made it perfect for welding the top to what was left of the roll bar and my added support bar.

I can still put everything back and just walk away.....

[sww914]

Nice sawhorses! I think you ran out and bought them so as to avoid any more embarrassment. (IMG:style_emoticons/default/biggrin.gif) (IMG:style_emoticons/default/biggrin.gif) (IMG:style_emoticons/default/biggrin.gif)

[Root_Werks]

No turning back now, rear targa bar cut, first welds done to secure the top to the car. Holy crap, what have I done? (IMG:style_emoticons/default/blink.gif)

[scotty b]

FYI for anyone contemplating this. Make certain the car you get the top from is an EARLY 944 or any 924 (pre 83) Later 944's and the 924S have a MOTORIZED sunroof that is operated by a motor in the rear of the car with cables running up to the roof. This would be EXTREMELY hard if not impossible to utilize the late style roof. Early roofs are a simple and manual 2 latch twist and lift setup. Carry on (IMG:style_emoticons/default/biggrin.gif)

[Root_Werks]

My special bar to reinforce what I cut off of the targa bar.

[Root_Werks]

FYI for anyone contemplating this. Make certain the car you get the top from is an EARLY 944 or any 924 (pre 83) Later 944's and the 924S have a MOTORIZED sunroof that is operated by a motor in the rear of the car with cables running up to the roof. This would be EXTREMELY hard if not impossible to utilize the late style roof. Early roofs are a simple and manual 2 latch twist and lift setup. Carry on (IMG:style_emoticons/default/biggrin.gif)

Actually, very true here. My roof section is from an 86' and the sunroof slug is from the same 86' with all 83' guts and parts for the manual latches. I chose the late stuff partly becuase it was avialable and part becuase the later sunroof sections have front and rear "bow" adjusments. But yeah, early 944 roof section would have been a little better for me. Either way, it will work, just have to source the manual latches.

[Root_Werks]

Fast forwarding since this is not a "how to" thread, just an "I did it so maybe you can to". Almost ready for paint in this photo, just a little more flat boarding and touch up.

Also, if you heli-arc the factory chanels together, you can buy the nice new universal style window seals so they will be all one piece for around $2 a foot. Pretty cheap, seal up perfect, look totaly stock blah, blah. There you go folks. I'll post some more painted pictures later on maybe. It can be done. Completely changes the car, tight and quiet now. I dare say almost like a normal car?