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p7x

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p7x last won the day on July 26

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About p7x

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  1. Ya gonna take a break but I’ll have to open it up and confirm what’s going on and gears
  2. Took the half shafts off today and found very little to no play in them. Took them to a driveline shop and they also confirmed the same. Played the shop the videos below and the general consensus was the Diff is in bad shape. thoughts from this community?
  3. Driveshaft installed!! There's good news and bad Good: Acceleration clunk reduced by 30% to put a number to it Clunk seemingly no longer happens on deceleration Shifting into each gear is smoother (unexpected) Taking up on the clutch better aka the clunk doesn't happen when releasing clutch mid speed Acceleration seems somewhat smoother Bad: Still have a noticeable clunk in the rear end under quick acceleration or quick release of the clutch. Overall: The driveshaft (prop) u joint was definitely part of the problem but not the full solution. Also noticed that when I was reversing quickly as part of my testing that there a rumbling noise coming from the rear. Next Steps: Remove the half shaft to check those u joints Play with the differential some more.
  4. Really? I had clunking with the stock diff mount that was worn (thought that was the problem because the diff moved up and down) so I went to the solid mount and it actually made the clunking worse. which is starting to make a little more sense if the diff is the issue, bolting it down with a solid mount would exacerbate the issue...more and more thinking its the diff itself.
  5. Need to swap the dust cover / sleeve from the old to the new shaft to cover the exposed gap then I'll be driving it to see if there is any change in the clunk.
  6. ^^^^ Jebus! Mine might not be that bad but maybe not far off. From the video below what to you guys think? I just installed the new driveshaft but haven't driven it yet. Regardless there's still a good amount of play in the diff but is it too much. The play is shown is the movement before the diff starts spinning the wheels. I've been beating around the bush based on what ive read in the community but the bush (Diff) might 100% be the problem.
  7. I've check the bushing, mustache bar, bolts etc and things seem to be in good shape. Honestly starting to worry that my tranny or diff are actually the issue.
  8. So moving the car around in the garage and 1) when backing the car out of the garage and a full second of grinding coming from the rear end while in reverse. This metal grind and moaning noise happens at very slow starts in first as well but this was the loudest i've ever heard it. 2) forcing the clunk to happen in 1st gear and then shifted into reverse and the clunk happen with no power going through the driveline. WTF
  9. Driveshaft (prop) is going in this weekend and honestly am only at 50% belief the could be the issue. The other 50% makes me think its the diff itself.... Hunt continues.
  10. Hey man, ya be good to meet other owners.
  11. New drive shaft (prop) is ordered and last night went through the whole back end and tightened everything to spec. Something I should of done from the beginning ... lesson learned. Pretty much everything was spec except the inner and outer lower control arm bolts those were pretty loose. gonna take the car out today to see if tightening things helped at all. Once the new driveshaft is in I’ll update the thread.
  12. Hello Everyone, In May I bought a 1978 280z 5 Speed with 250,000 miles on it. Been in California for 41 years until now, California spec car. I've always loved the S30s and been wanting one for years. My plan this year is to get it into very good mechanical shape and over many years to come to slowly restore / mod it. Thanks in advance for your help / advice.
  13. Ya there’s a good shop near by that I’m gonna call this week talk to them and see what they’ll charge. I feel I could do a driveshaft (prop) swap just no clue about the balancing of the driveshaft (prop)
  14. Ya just to be clear I’m talking driveshaft(prop shaft) between the tranny and diff, not half shafts. From what I can find from multiple sources is after 75 you can’t replace the u-joints on the driveshaft easily. In my hunt I’ll probably take the half shafts off as well to inspect them.
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