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A blog by miker in General

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trans/diff problem

miker

Entry posted by miker

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Transmission or differential problem on a 1972 240z with 160000 miles on it, car has sat for 8 years, bought it 4 months ago, got it running, doing about 40 miles per hour and grinding noise starting coming from the rear passenger side differential area. Noise only when I try to excellerate but all the gears seem to work and shift ok. Before I start to get into it, just wanted to get an idea what to look for or what the problem could be. Have not added or changed any fluids in trans or differential. I am wanting to fix as much as I can myself and keep original.

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miker

Hey I didn't just want to tell you guys what the problem was, I need some input from those of you that know.

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  • Blog Statistics

    • Total Blogs
      167
    • Total Entries
      251

  • Blog Comments

    • Jeff G 78
      280z Disc brake conversion

      By Jeff G 78 · Posted

      I'm still waiting on a hoist to free up before I can start bolting the new brake parts on my Z, but I did make the drill jig today.  I started with a 12mm thick Mustang wheel spacer with a pilot.  I then made a drawing to layout the holes needed.  I transfered the drawing onto the spacer and I drilled three new 1/8" holes through the jig (spacer) so I'd have the correct 4x114.3mm holes.  One hole is shared from the original 5 lug rotor.  I then bolted the jig onto the Mustang rotor and simply dr
    • One Way
      Looking for a 1978 280z Gas Tank

      By One Way · Posted

      Local radiator repair shops used to be plentiful but getting harder to find.  Some of them just specialize in big truck-heavy equipment radiators.  I will be needing to do the same for my project.  I have heard good reports on gas tank RENU but there are none of those franchises in my area.  Good luck, John-Lugoff, SC
    • Yarb
      280z Disc brake conversion

      By Yarb · Posted

      Decided to go with the 240sx conversion. Main reason is it’s strictly for the street and the parts were easy to source. What I didn’t realize was the 14” wheels won’t clear the caliper. Now looking for a set of 4 lug 15” rims and tires I can use during the build process. Can anyone recommend a temporary solution as far as make and model preferably a steel wheel that I can use until I’m ready to buy the wheel and tire combination at the end of the project? Thanks again for all the help out there.
    • Jeff G 78
      280z Disc brake conversion

      By Jeff G 78 · Posted

      There are several reasons to use the S197 rear brakes.  The rotors are larger diameter than the SVO rotors and they are vented.  The calipers have larger pistons to give them more power.  The big beef with the Maxima rears is that they don't offer as much stopping power as the stock drums.  The S197 rears allow the addition of an adjustable proportioning valve.  The Maxima rears cannot utilize an adjustable prop since the prop needs to be all the way open to get close to enough rear bias. 
    • the_tool_man
      280z Disc brake conversion

      By the_tool_man · Posted

      Any particular reason to use S197 Mustang 5-lug brakes?  The Fox body SVO Mustangs had rear discs with 4-lug.  It's a popular swap to use SVO or T-bird Turbo Coupe rear brakes to retrofit discs to other Fox body Mustangs.  These parts are still pretty common (probably available as a kit).  Might be worth checking to see if they'll fit.
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