datsunlover Posted December 12, 2003 Share Posted December 12, 2003 Ok, before you guys jump all over me, YES I did use the search feature, but couldn't find exactly what I'm after... I am thinking of puting frame rails/conectors in my 75 280z. The floors/factory rails have been replaced, but it looks like a shoody job, and Im not too sure how strong they actually are. They arn't even straight OR paralell to ground! What I am thinking of is using 3X2" .125 thick chanel from the T/C bracket back to the rear frame. I figured I'd just put it right over what's there right now, and not cut the floor's. Is this 'do-able' or will it not work well? Quote Link to comment Share on other sites More sharing options...
Pop N Wood Posted December 12, 2003 Share Posted December 12, 2003 Doesn't get any better than this thread http://www.hybridz.org/phpBB2/viewtopic.php?t=28450 About half way down Dave posted this link to beaucoup pictures. http://12.224.118.250:8884/files/datsun/Subframe/ Quote Link to comment Share on other sites More sharing options...
Mike kZ Posted December 12, 2003 Share Posted December 12, 2003 I used a 3" X 1 1/2" rectangular tubing, which gave me 1/2" extra ground clearance. I did not cut my floor. Quote Link to comment Share on other sites More sharing options...
datsunlover Posted December 12, 2003 Author Share Posted December 12, 2003 Thanks guys... got a question about this though.... don't know who's car this is, but what do you ppl think of doing a frame like this? (outside the original frame rail) And are there any pics of the rear of this setup? This looks like what I want to do (saves cutting out the floor/rewelding it later) and would be easier (I think) for me as I have no hoist or rotiserie, and will be lying down to do it. What do you guys think? Quote Link to comment Share on other sites More sharing options...
datsunlover Posted December 13, 2003 Author Share Posted December 13, 2003 BTW, I got that pic from Daves list. Quote Link to comment Share on other sites More sharing options...
Scottie-GNZ Posted December 14, 2003 Share Posted December 14, 2003 Both 240Z Turbo and I have done this. Low-cost but effective way to add rigidity. Quote Link to comment Share on other sites More sharing options...
datsunlover Posted December 14, 2003 Author Share Posted December 14, 2003 $cha-ching$! Thats what I am going for- low cost, and strong/safe. Guess I'll start measuring and get some materials! Quote Link to comment Share on other sites More sharing options...
BillZ260 Posted December 15, 2003 Share Posted December 15, 2003 I just finnished this 'mod' on my car, but I did the floor pans as well. I don't see any reason why you could not build the rails that are similar to pparaska's and fit them underneath the existing floors. I would like to add that since I ran my rails first and then tied the floors into them, the set up seems like it is very stiff. That said, I bought a 24ft long 11ga 2"x3" tube and had it cut up into 6' lenths and a 4' x8' sheet of 18ga and had it cut up. I was lucky in that my employer ordered it for me and cut it up for me, that was a huge help. Anyway, below is the link to a post with my results. Those rails are almost identical to pparaskas. If you havn't checked his site out, do so. I think I spent about 80 bucks on the material, and I have more than enough to do another set of rails if you are in the area. Sell you what I have left cheap, $30 for 2 6ft rails and a 2'x5' sheet if you want it. Took me about a 7-8 hours to build the frame rails and weld them up and another 7-8 hours per side to weld in the rails and the floors. I don't know if 3 full days is fast or slow but it seemed like a really long time to have that welding helmet on! I was learing to weld durring all of this too, but I had a great time and I think it turned out pretty good. http://www.hybridz.org/phpBB2/viewtopic.php?t=28937 Quote Link to comment Share on other sites More sharing options...
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