icesky Posted September 6, 2004 Share Posted September 6, 2004 I bought z3 seats for my 240z thinking that it would fit since the measurements are almost identical give or take a inch. Now here is my problem when sitting on 240z seats they compress from 7inches to about 3.1 inches and when sitting on z3 seats they compress from 7.5inches to about 6.5. The problem is I hit my head on the roof. I was wondering if it is possible to cut off the seat mounts (front and back) without jeopardizing the stiffness of the chase. Also if it does jeopardize the stiffness, is there any way of getting these seats in the car. Tell me if these pictures help, if not ill take better pictures in a flash. http://hybridz.org/nuke/modules/coppermine/albums/userpics/12856/normal_IM0005410.jpg Quote Link to comment Share on other sites More sharing options...
ZXR_KiD Posted September 7, 2004 Share Posted September 7, 2004 I honestly don't know how the Z3 seats are made as far as bracings and mounts. but personally I would take the bottom of the seat apart and cut an in. or so out of the bottom of the springs then re-attatch everything, thus creating a lower sit... altho now that I think about it that would affect the alighnment of your back and the shape of the seat back. if you took some pictures of the bottom of the Z3 seat I might be able to evaluate a better solution. or perhaps...(note this is just a thought) visually the rear mounts add no structural support (I could be wrong) however the front is definatly a supporting beam... IF you cut holes (wide enough for your mount tracks), installed the seats, then welded cross bars over the holes (over top of the mount tracks) it would probably hold structural integrity. but I recommend serious consideration before you cut into the car. PS. do you have any plans for those seats, I know some one who would be interested in purchasing them if you want to part with them... Quote Link to comment Share on other sites More sharing options...
icesky Posted September 25, 2004 Author Share Posted September 25, 2004 Here some new pics http://hybridz.org/nuke/modules.php?op=modload&name=coppermine&file=index&cat=12856 tell me if this help or not. Also the chair mechanisms when fully compress are 2inches. Thank you [/url] Quote Link to comment Share on other sites More sharing options...
Hugh Posted September 25, 2004 Share Posted September 25, 2004 Wow, with all that stuff underneath it... you ain't modifying the seat bottom. I chopped up an FD seat once to fit my old 180sx. The bottom was just two rails and a fiberglass bucket. Those Z3 seats are a different story. You're gonna have to cut into the floor. You need to reinforce the front bar area if you're cutting it. Quote Link to comment Share on other sites More sharing options...
Dan Juday Posted September 25, 2004 Share Posted September 25, 2004 The seat rails that are spot welded to the floor do add to the overall structural integrity of the car. How much is arguable. I personally think it's close to negligible. We removed the floor rails from a 280 for a seat swap and welded in new ones that better suited the new seats. I think you could do the same without any loss of structural integrity. Depending on your design you may even make things better. Quote Link to comment Share on other sites More sharing options...
Jason Jarvis Posted September 26, 2004 Share Posted September 26, 2004 Are you in love with all the power adjustments / massage chair / whatever that are ran by those motors ? If not, I bet that slide / rake etc. section will unbolt from the actual seat, leaving the option of fabbing rails or adapters to your Z rails, gaining you a few inches. Quote Link to comment Share on other sites More sharing options...
datsunlover Posted September 26, 2004 Share Posted September 26, 2004 I cut the factory seat brackets down in my 75 280 to fit CRX Si seats in it. Basically, hacked 1.5 inches of hight out front and back, and rewelded the pieces back it. Then built 'adaptors' out of flat bar, and bolted the seats to the bar, and bar to the Z brackets. Works great for me.. but it was easy in my car as the floor was recently re-done and the seat brakets were put back in kind of.. well, badly.. (hack job extrodinaire!!) by the previous owner.. I to would say the seat brakets don't add much 'structure' or suport to the car, and wouldn't worry about cutting into them. Quote Link to comment Share on other sites More sharing options...
icesky Posted September 26, 2004 Author Share Posted September 26, 2004 So it looks like its ok to cut of the seat brackets on the car? Gonna be fun day tommorrow! Thanks for the replies everyone Quote Link to comment Share on other sites More sharing options...
datsunlover Posted September 26, 2004 Share Posted September 26, 2004 forgot to mention someting.. if you don't know already, the drivers seat mounts (IIRC) are closer together. (side to side I mean) Because of the trans tunel and exhast 'bump', there is a little less width to work with on the drivers side. Before you go cutting stuf, Id measure evrything really carefully, and make sure the 'new' seats are gona fit on the brakets after cutting. Quote Link to comment Share on other sites More sharing options...
icesky Posted September 27, 2004 Author Share Posted September 27, 2004 So the places in red are ok to grind off? Just wanna make sure I have everything down correctly. Thanks Everyone Quote Link to comment Share on other sites More sharing options...
datsunlover Posted September 27, 2004 Share Posted September 27, 2004 uhhh.. yyyyeah... I would say remove those pieces as a whole (grinder with a cut-off wheel, sawsall, ect).. as straight and level as you can, then cut them down to the hight you need and reweld to the floor. It took me a day to do both of mine, just because it's tedious to get them out, cut down, and then back in all level/even. Quote Link to comment Share on other sites More sharing options...
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