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Franklyn
3 Deuce Webber
Joined: 22 Aug 2011
Posts: 86
Location: Abbotsford, BC CANADA
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Post subject:
Drive Shaft Grinding Floor !!
(Mon Mar 05, 2012 6:30 pm)
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Seems that everytime I go over a large bump, or if I somewhat aggresivly accelerate with more than one person in the Dart, the driveshaft grinds away momentarily on the inner tunnel under the car, right where the drivers' and passenger's seatbelts are mounted.
Doesn't grind the seat belt mounts, but higher up into the tunnle on the actual floor of the body.
Shouldn't there be bump stops to prevent this from happening?
if so, where would they be located?_________________ Franklyn
1965 Dart GT - 1949 Plymouth Special Deluxe
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Doc
Guru
Joined: 14 Oct 2002
Posts: 4973
Location: Working in Silicon Valley, USA
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Post subject:
(Mon Mar 05, 2012 6:31 pm)
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Sounds like the rear trans mounting has failed or is badly worn.
DD
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Franklyn
3 Deuce Webber
Joined: 22 Aug 2011
Posts: 86
Location: Abbotsford, BC CANADA
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Post subject:
(Fri Mar 09, 2012 9:03 am)
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hm interesting point Doc,
I've never come across this before.
how would I check this out?_________________ Franklyn
1965 Dart GT - 1949 Plymouth Special Deluxe
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Joshua Skinner
Supercharged
Joined: 27 Jan 2005
Posts: 6464
Location: Portland, Oregon
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Post subject:
(Fri Mar 09, 2012 9:09 am)
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| Visual inspection, pry up on the transmission tail shaft or support the tail shaft and remove the mount and crossmember.
_________________
Joshua Skinner
car nut, telecom tech, tool using mammal
'72 Dart Swinger
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Doc
Guru
Joined: 14 Oct 2002
Posts: 4973
Location: Working in Silicon Valley, USA
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Post subject:
(Fri Mar 09, 2012 9:33 am)
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If the tranny mount is oil soaked... that a good sign that it needs replacing.
DD
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SlantSixDan
Board Sponsor & Contributor
Joined: 31 Oct 2002
Posts: 21883
Location: North America
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Post subject:
(Fri Mar 09, 2012 11:02 am)
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Yup, here's another vote for taking a careful look at not just your trans mount but also your left and right engine mounts. The left and right rubber blocks should be square like bricks. If they are bulged, sagged, and/or cracked, replace them. Also, open the hood, apply the handbrake, put your foot firmly on the brake pedal, start the car, put it in Drive, and nudge the gas pedal briskly. If the engine jumps more than a few inches, the mounts are shot. Get the left and right ones here, and the rear one here (last item on the page); these are premium items you will never again have to replace._________________ 一期一会
By birth & parentage: US citizen, 2nd class
By choice: Canadian citizen, 1st class
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Franklyn
3 Deuce Webber
Joined: 22 Aug 2011
Posts: 86
Location: Abbotsford, BC CANADA
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Post subject:
(Fri Mar 09, 2012 4:27 pm)
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Fair enough,
I'll try to find a way to check that trans mount.
I checked both left and right engine mount recently (SlantSixDan recommended doing so when i was experiencing a ditributor clearance issue)
Both appear to be sqaure and strong.
a niave question... if the transmount was infact worn, wouldn't the trans hang "lower" than it needs to be? (ie. clearing the drive shaft tunnel even more?)_________________ Franklyn
1965 Dart GT - 1949 Plymouth Special Deluxe
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SlantSixDan
Board Sponsor & Contributor
Joined: 31 Oct 2002
Posts: 21883
Location: North America
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Post subject:
(Fri Mar 09, 2012 4:34 pm)
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Because of the way the trans mount is designed, there's a limited degree of droop/sag even if the mount is completely shot. But if it is completely shot, there'll be a fair amount of upward movement possible._________________ 一期一会
By birth & parentage: US citizen, 2nd class
By choice: Canadian citizen, 1st class
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Franklyn
3 Deuce Webber
Joined: 22 Aug 2011
Posts: 86
Location: Abbotsford, BC CANADA
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Post subject:
(Fri Mar 09, 2012 4:35 pm)
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deal.
 _________________ Franklyn
1965 Dart GT - 1949 Plymouth Special Deluxe
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Old Car Scott
TBI Slant 6
Joined: 09 Jan 2004
Posts: 208
Location: Tracy, CA
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Post subject:
(Fri Mar 09, 2012 4:46 pm)
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Are there lowering blocks on the car?
Rear springs shot?
Frame rusty and bending? |
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