1wildzer Posted March 27, 2002 Share #1 Posted March 27, 2002 I have a 75 280z and want to put the 240z bumpers on. I have all the things to do the conversion but don't know were to start. Is their anyone out there that has done this conversion. Link to comment Share on other sites More sharing options...
kmack Posted March 28, 2002 Share #2 Posted March 28, 2002 I have never done this conversion but I do know there are 2 different types of 240 bumpers. They changed to a different mounting set-up for the '73 cars. The early ones (70-72) just used a flat piece of steel w/ a slight bend in it. The '73's used a set-up somewhat similar to the shock mounts used on the 260's and 280's. You're best bet would be to try and use the '73 bumpers since the mounting would be similar. I have also heard that just mounting up the bumper on the standard 280 shock mounts will result in the bumper sticking WAY far out away from the car. To get around this you will have to collapse the mounts. This will not allow your new bumper set-up to absorb small impacts.Anyone else with info on this correct me if I'm wrong. Link to comment Share on other sites More sharing options...
datsun280ZSOLO Posted January 10, 2004 Share #3 Posted January 10, 2004 I have a question, even if you mount the 240 bumper up and collapse the mounts isn't there still a big gap where the big 280 bumper used to be where the fender headlight bucket and valence meet? Would you have to change out those parts to get a true conversion? Link to comment Share on other sites More sharing options...
datto_240z Posted January 10, 2004 Share #4 Posted January 10, 2004 Well the 240z and 280z bodys are the same. The Americans just wanted biger bumpers. God knows why... I dont see any problem, you'll just have to lightly placing the bumpers on to see if they fit coz u said u have everything and just want to know where to start :stupid: CheersChris Beattie Link to comment Share on other sites More sharing options...
260DET Posted January 10, 2004 Share #5 Posted January 10, 2004 Maybe because it is a legal requirement?? In that situation the question makes sense. Link to comment Share on other sites More sharing options...
Bambikiller240 Posted January 10, 2004 Share #6 Posted January 10, 2004 Originally posted by datto_240z Well the 240z and 280z bodys are the same. The Americans just wanted biger bumpers. God knows why... I dont see any problem, The bumpers on 240Z's look great, I agree, but if you've ever been in a minor "fender-bender" with them you'll know that they fold up like cardboard. They provide virtually no protection to the bodywork. The larger and FUGLEY bumpers that began to appear on US market 1973 240Z's and continued to grow larger as years went on, have an energy absorbtion system that helps protect the bodywork MUCH better.PS To install thew 240 bumpers on a 280Z, I'm told (2nd hand info) that you need to remove all of the old bumper mountings (not just "collapse" them) and use the mount brackets for the 240Z style bumper Link to comment Share on other sites More sharing options...
wolf66 Posted February 4, 2004 Share #7 Posted February 4, 2004 How do you collapse the rear bumper shocks? Link to comment Share on other sites More sharing options...
peterc Posted February 5, 2004 Share #8 Posted February 5, 2004 The method of installation is different for the front and rear bumpers.Front:Remove the front shock mounts and use the solid metal mounts from the 240 instead. They will bolt right up where the shock mounts used to and the bumper will fit exactly as it would on a 240. No wide gap.Rear:Yes you do have to collapse the shock mounts if you want to avoid a wide gap. To do this loosen the small screw in the middle of the bumper mounting plate of the shock mount. This is the hydraulic fluid fill point for the shocks. With the screw loosened give it a few whacks with a small sledge and the shock mount will collapse (and may well leak a little fluid). Retighten the screw when you have them collapsed. Please note that the mounting bolts on the bumper will NOT line up with the holes in the shock mounts. You will have to use a piece of flat steel (about 1" wide by 1/4" thick) long enough to attach to both bumper shocks. Once you have it attached to the shocks line up the bumper (make sure that the gaps where the bumper attaches to the SIDES of the rear quarter panels are equal) and mark where the bumper attachment bolts meet the steel bar. Then drill appropriate sized holes in the steel bar, and you're ready to attach the bumper. ALSO!! As Bambikiller240 points out, the 240 bumpers offer much less protection, especially with the shock mounts collapsed. Personally, however, I feel the improvement in looks is well worth the decrease in protection.Cheers,Peter Link to comment Share on other sites More sharing options...
peterc Posted February 5, 2004 Share #9 Posted February 5, 2004 Michael's right. I knew I was forgetting something. :stupid: If you don't change the front and side valences the new bumper won't fit or look right.Cheers, Peter Link to comment Share on other sites More sharing options...
Pennyman Posted September 3, 2005 Share #10 Posted September 3, 2005 For the rear, could you also drop the tank and remove the bumper shocks all together? Maybe replace them with the 240Z bumper brackets? Or would you have to fabricate a bracket to put in place of the rear bumper shocks? Link to comment Share on other sites More sharing options...
Hypertek Posted September 3, 2005 Share #11 Posted September 3, 2005 yah http://www.zcarcreations.com/howto/240bump.htm Link to comment Share on other sites More sharing options...
Pennyman Posted September 4, 2005 Share #12 Posted September 4, 2005 Cool, too bad it's not a real step by step build, but I'll figure it out. Any idea which year small bumpers work/look the best? Link to comment Share on other sites More sharing options...
zKars
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