Guest Nic-Rebel450CA Posted November 23, 2003 Share Posted November 23, 2003 How critical are the floorpan and transmission tunnel to overall structural integrity of our Z's? I was studying the underside of my Z the other day, and wondered if the area under the seats in the Z could be cut out and replaced with a concave sheet (like a big dent going up into the car) to allow full size mufflers to be mounted in the middle of the car. Anyone done anything like this? Any reason it could not be done on a Z? Quote Link to comment Share on other sites More sharing options...
Guest brianglawson Posted November 23, 2003 Share Posted November 23, 2003 from what i understand pretty critical, when we ordered our floorpans(zedd findings) he said above all, make sure they are secure, he seemed to stress it, so i assume it is very critical, judging by it, to me it looks as if the tranny tunnel would spread if the floorpans were not secure enough...causing alot of flex Quote Link to comment Share on other sites More sharing options...
Guest Nic-Rebel450CA Posted November 23, 2003 Share Posted November 23, 2003 If I were to use a thick steel for the replacement area, could that maintain the same rigidity? Basically the floor will still be there, it will just be shaped differently. Quote Link to comment Share on other sites More sharing options...
74_5.0L_Z Posted November 23, 2003 Share Posted November 23, 2003 The deep drive shaft tunnel of the Z is very important to the overall rigidity of the car. I would be careful cutting it without some good reinforcement. Why do you want the mufflers under the car? I would think that would cause resonance inside the car. One thing I have considered is mounting a single dual in/dual out muffler in the driveshaft tunnel behind the transmission. In the 280Z, I believe that there is a wide section where the catalytic converter was mounted. Currently, I have dual 2.5" exhaust with (2) two chamber flowmasters mounted in the back on either side. To do this though, I had to get rid of the stock gas tank, and mount a fuel cell centered between the rear frame rails. Quote Link to comment Share on other sites More sharing options...
Guest Nic-Rebel450CA Posted November 24, 2003 Share Posted November 24, 2003 The advantage to having the mufflers in the center of the car is tone. Then you can have much longer tail pipes and much more definition in the exhaust. Quote Link to comment Share on other sites More sharing options...
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