My beloved 1972 240z had rusted thru the frame rails and front rails under the front cross beam so bad that i was advised to junk the car or part it out. I was determined to save it so i did the following. I took 7' length of 21/2 by 1/4 inch weldable steel and forced into the frame rail slots then drilled holes to bolt it to the strut housings and also holes for the sway bar. I then used a grinder to get rid of the worst rusted areas, then i bought 4 cans of "great stuff" expanding foam and filled the hollow frame rails till it started oozing out. I let this mess dry for a day then i took a ginsu knife and trimmed the excess foam off. Then i painted it with flat black primer, then i sprayed with rubber undercoat. My car has no squeeks and is quieter. I also filled in the area under the battery with foam...just for the heck of it, as rust was eating into the fender. Whadaya think? Am i whacked in the head? is there a better way? or what? ZcarsRock.....even for us poor folk:)
I am a new owner to the Z car ranks. I've loved these cars since i was 7 years old. I remember seeing my first one in late 1969 as i was playing in my yard. I vowed one day i'd have one. Then there was the army, overseas tour after tour, marriage, kids...blah blah, so anyway i retire soon, and finally i got one!!! a shiney red 1972 240z for $2,000 bucks. I'll try to figure how to post a pic of it.