Re: bad vibrations

["Ben Jr. Morgan" <polara_hotrods@xxxxxxx>]

Does this vibration persist upon reving the engine to 3000 rpms while in park too? Or only going down the road?
  ----- Original Message ----- 
  From: Robert<mailto:r.lane@xxxxxxxxxx> 
  To: 1962to1965mopars@<mailto:1962to1965mopars@> 
  Cc: r.lane@xxxxxxxxxx<mailto:r.lane@xxxxxxxxxx> 
  Sent: Thursday, November 30, 2006 7:41 AM
  Subject: bad vibrations





  Hi guys
  Something we've (bro & I) been wondering about for a little while, thought someone 
  here might be able to shed some light on.

  I mentioned a while ago that once we'd got our 63 back on the road, the ride 
  quality was hampered by vibrations/noise coming into the cabin. The noise 
  seemed to be top end engine noise, which may be normal for the 426, but 
  what we need to concentrate on fixing is the vibrations we get through the 
  car from about 3000rpm, cos it gets kinda worrying at 'highway' (as you'd 
  say over there) speeds, and is delaying any plans to take it up the 1/4.

  We had the propshaft (driveshaft?) rebalanced just before the engine went back 
  in, so it should be ok, but we're going to get it checked by someone else, 
  just in case it wasnt done right.

  Another guy in our club with a 72 Charger recently had a similar problem which 
  he has had fixed by a local garage (US specialist). He/they said one thing 
  that was causing his vibration was his exhaust system was clamped up too 
  firm to the body, and was transmitting the engine's vibrations thru to the 
  car. I think he just had steel hangers so has now had the usual rubber insulators 
  fitted to absorb some of the resonance.
  They also checked his axle end-float which needed shimming. Along with 
  replacing some shot u.j.'s, the work done has made the car drive better 
  than ever.

  Whilst our uj's should be ok (replaced when the prop was balanced), I'm wondering 
  if the exhaust & end-float factors could be contributing to our problems. 
  Because our engine was so bad before the rebuild, we didnt really have it 
  much over 3000rpm so dont recall as much vibration.

  Just before the car came off the road for the engine work, we fitted new Moser 
  axle shafts (1 of our originals had a bent flange), so am wondering if we 
  may have end-float issues too.
  Also, I noticed the other day that our exh (full MW system) has got rubber 
  mounts but it is fixed so firm (the rubber parts are so short there's no 
  room for them to flex) that the pipes cannot be moved by hand at all.

  Any idea whether these could be contributing to our probs?

  Thanks in advance.....

  Robert
  63 Polara 500
  England


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[Non-text portions of this message have been removed]


----
Please address private mail -- mail of interest to only one person -- directly to that person.  I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic.  Thanks!

'62 to '65 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html. 

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