matt_w Posted August 16, 2009 Share Posted August 16, 2009 I got a set of these, didn't see much info on here about the 240z-specific ones. Has anyone installed them on here yet? From the pictures I've seen of the 280 rails, it looks like those mount to the side of the old rails. These mount to the part of the old rails that is tack-welded to the floor pan. The problem I'm having is that my frame is buckled slightly, so the front and back of the new rails are flush against the old ones, but the middle is off by about 1/4 of an inch. Anyone have any suggestions for this? Quote Link to comment Share on other sites More sharing options...
Boy from Oz Posted August 16, 2009 Share Posted August 16, 2009 I had a similar issue with my floor pan and a 6" length of 4"x2" timber and a hammer soon fixed it. I assume you have removed the carpet, so just position the timber on the floor above the rail and whack away. You'll see that it flattens out fairly easily. Like all good panel work, a thousand small hits are better than one big one. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted August 16, 2009 Share Posted August 16, 2009 Really? You didn't see my sticky post about installing these (along with modifying the TC rods and some other crap)? I have pictures in there showing how I pulled the floor down to the frame rail with large self tapping sheet metal bolts, then welded the rails on and filled in the holes. I did remove the stock rails, but I think the same procedure will work. You might need closer spacing on the sheet metal bolts. Quote Link to comment Share on other sites More sharing options...
matt_w Posted August 16, 2009 Author Share Posted August 16, 2009 Really? You didn't see my sticky post about installing these (along with modifying the TC rods and some other crap)? I have pictures in there showing how I pulled the floor down to the frame rail with large self tapping sheet metal bolts, then welded the rails on and filled in the holes. I did remove the stock rails, but I think the same procedure will work. You might need closer spacing on the sheet metal bolts. It was a helpful post (although the pictures aren't working). Im leaving most of the stock rails on (except around the T/C mount) , so I think the 2x4 approach may work better. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted August 16, 2009 Share Posted August 16, 2009 I reposted a bunch of pics at the end of the thread. They might be one page from then end now... Quote Link to comment Share on other sites More sharing options...
matt_w Posted August 17, 2009 Author Share Posted August 17, 2009 Looking at the pictures of your welds makes me nervous. Did you have any problems with burning through the floor? I believe the floor pans are 20 gage, and my frame rails are 12 gage. After some more thought yesterday, I was thinking the easiest way to do it would be to use your bolt idea to bring the old frame rails inline, and then spotwelding the new rails to the old ones by way of filling in the bolt holes. I realize you didn't have that luxury because your old rails were gone. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted August 17, 2009 Share Posted August 17, 2009 You need to use a bit of finesse when welding it all together. Since I had the luxury of a rotisserie, the angle was obviously a lot easier for me than it will be for you. What I did though was to start the weld on the SFC, and then drag the puddle into the floor. Worked great. I did start out stitch welding from the bottom and got fed up with that really quickly (metal dripping off and popping on the floor right next to my face, crappy welds, etc) and that's why I built the rotisserie. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.