Venting the Targa Top Options

[john rogers]

Has anyone tried using a spacer under the rear of the Targa top, say about an inch or two to make a vent? Since my top has to be and is bolted down in the rear I thought this might help break the vacuum that forms behind the rear window? I have seen a couple with plexiglass/lexan rear windows with several holes across the width which would do the same thing I think?

[brant]

JP,

I won't speak for John and his reasons for the mod..

but my reasoning was to reduce drag, and really had nothing to do with forcing air into the intakes....

I'm running no windows and no front triangle window, so there is some amount of air forced into the cabin that I wanted to let out.

The big/serious cars are 1/2 deleting or fully deleting the rear window like you suggest... again to reduce the drag.
My only fear is that I've seen a few fires and they almost always start on top of the carbs (fittings coming loose, etc.) A friend of mine's 911 had one of these fires just last summer.... I was there watching it and it was an awfully big ball of flame. Her engine lid was closed and it was still an awfully big ball of flame. Took the paint off of both rear fenders...

It was put out in 3 seconds or so and the car was driveable, but I was surprised at how much damage to the paint had occured in 3 seconds.... Got me to thinking that I might want something (even if it was just a piece of lexan) between my head and a fire like that...

I think the scoop Idea is a good solution for intake air, but at the cost of creating drag.... I just wanted to reduce drag.

brant