Rear Window - for those with cages

I used lexan or plexi when I did mine. At the moment (and for the last 5 years) I have not sealed the holes around the bars. I just cut the acrylic using the original window as a template and used the stock rubber gasket. Be careful though as the acrylic is not as chemically resistant as glass and can be damaged. Learned this the hard way. I cant remember what sprayed on it but it made a nice pattern on the acrylic.

Thanks Blaine.
I will keep your comments in mind when I get to this stage.

I am planning on making a couple of aluminum trim pieces to go around the bars and add some sort of sealant between them.

I was thinking of running regular safety glass in mine. A local glass company can cut flat automotive safety glass from a template. I did not get an exact number from them but they didn't think it would be very much.

You might try to find an oblong or oval rubber grommet to seal the window against the cage tubes, similar to the round rubber grommets used to pass wires or pipe through sheet metal panels.

Try:
http://www.customrubbercorp.com/p_gromm11.htm
http://www.manuf-rubber.com/grommets.html
http://www.mcmaster.com/#rubbe...met-bushings/=cvzjqu

Or maybe line the opening in the window with Edge Trim:
http://www.mcmaster.com/#flexi...rip-grommets/=cvzkil

Thanks for the suggestions.
This is what I am looking for.

Garth - this is exactly what I was thinking, but then I wanted to do an aluminum oval and button head cap screws around it to dress it out.

I am kind of anal about appearance and functionality. Maybe this is why everything takes so darn long.

Not sure if you have already put in a roll bar, but one solution I've mentioned before was to install the roll bar behind the rear window inside the engine compartment with bracing running back to points on the chassis inside the engine compartment. That is the way my McLaren was done. The only thing you lose are the bars inside the driving compartment that: (1)give side protection and (2)stop flexing of the chassis. But if you are only doing a roll bar for rule compliance in ORR type events, this is another option and having the roll bar behind the rear window certainly cleans up the inside of the car if you are still driving it on the street to get your groceries on the weekends or out to dinner.

I tried to get my roll bar to fit in the rear. I could not make it work and keep it a one piece removable unit. It was also going to compromise the size of the gas tank. Since my headers are totally different and my gas tank is on the right side, it would mean loosing precious volume.

http://www.rc-tech.net/pantera1/rollbar/roll.htm

My car is going to be a primary street car, but with a pretty agressive engine plan.

I really want to stiffen up the car though.

I was going to make the cage part inside the vehicle pretty unobtrusive so no door bars.

I don't have to worry about specific design for racing compliance.

Thanks for all the suggestions. Keep them coming.