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  1. mhjo

    Can't identfy vibration

    Got the car back from the Drivshaft guys. Car was still vibrating. Returned driveshaft, they checked again. Still vibrating. Now I have a deep earthquake rumble when deaccelerating downhill 40-50 mph. It's like 15-20 hz Cinema sub-woofer. I really don't know what to do:shrug:
  2. mhjo

    Can't identfy vibration

    lost in translation. Driveshaft in my mother tongue is "middle-axle"
  3. mhjo

    Time to upgrade exhaust

    My friend who owns a '67 289 convertible has just replaced his mufflers with the VT's. He is :hail2:
  4. mhjo

    Can't identfy vibration

    I rarely use the car thheese days because of the worst rainfall in 132 years. I have today agrred to send the car back to my good mechanic and let him have the car for a week (while I go on a trip to Greece). He will be in contact with the company/guy that did the driveshaft job and work this...
  5. mhjo

    Can't identfy vibration

    No, I haven't complained yet since I picked the car up friday (it's saturday here now). I will call him on monday. Seems like thevibration has moved from one rpm to another really. When I delivered the car I had vibration only in 3d gear, now it's mostly in 4th (OD) at 60 mph. I don't know...
  6. mhjo

    Can't identfy vibration

    Got the car back from drive shaft specialis. He changed the u-joint/yoke part that is attached to the driveshaft titself by cutting it off. The movement there was not good, as it was almost stuck. He checked shaft for imbalance, but found none. He also insuleted it with some carton stuff...
  7. mhjo

    Can't identfy vibration

    Well, I can at lest post a pic of the car (yellow one)
  8. mhjo

    Can't identfy vibration

    They called today and reported that they found some issues. I shall report the findings and results tomorrow when I get the car back. Thanks again for tips!:hail2:
  9. mhjo

    Can't identfy vibration

    Thanks! Great - I'll add it on the check list. BTW: The guy who changed one of the U-joints and Yoke said that one is '65 and the other is '67 (larger). Any impact?
  10. mhjo

    Can't identfy vibration

    Thanks for link. Driveline angle will be checked by pro's tomorrow. Can you please explain "phase"?
  11. mhjo

    Can't identfy vibration

    I called my Mustang supplier today (largest i Scandinavia), and he told me that I have a 28 oz AOD flex plate made for old model 289/302.
  12. mhjo

    Can't identfy vibration

    Sorry for "lost in translation" When I say axle I mean drive shaft. The people that sold me the flex plate insist it is the right one (they are a specialized Classic Mustang supplier i Norway who get their stock from NPD and Summit). However, I will call the today and ask for product...
  13. mhjo

    Can't identfy vibration

    I only have vibration at a certain rpm
  14. mhjo

    Can't identfy vibration

    Thanks so far. This will be my check list. :hail2:
  15. mhjo

    Can't identfy vibration

    After AOD swap (from c4) I experince vibration at a certain rpm. It is noticable at 50 mph in 3d and 80 mph in OD. Wheels have been balanced, axle too. Vibration can be felt in the shifter stick. What can this be?
  16. mhjo

    Report - Dynomax VT mufflers

    You don't hear that much from inside. After I replaced shorty headers with Hipo manifolds and mufller, the sound really comes out behind the car and less inside. But when I record the sound, I will try to record both inside and outside.
  17. mhjo

    Report - Dynomax VT mufflers

    :nice: Who makes that? What's it called?
  18. mhjo

    Report - Dynomax VT mufflers

    I will se if I caan make some sound clips and also check the rpm/opening this weekend.
  19. mhjo

    Report - Dynomax VT mufflers

    1. They are almost totally silent at cruising 2. They do not drone at any rpm 3. They scream like a cat when you rev up I think Dynomax haave done some reseach on noise cancelling (especially bass cancelling). The sound has a significant bass cut on idle compared to Super Turbos...
  20. mhjo

    Time to upgrade exhaust

    Of course I do, and everyone is asking me the same question. I guess the RD team at Dynomax did the same. :D However, I read somewhere on the net that there was a guy who experienced rattle in the chamber, but that Dynomax offered return and compensation. Also, that there has been made...
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