Please help diagnose this noise.....
#1194528
03/10/12 04:31 PM
03/10/12 04:31 PM
|
Joined: Jul 2006
Posts: 4,319 Puyallup, WA
StealthWedge67
OP
master
|
OP
master
Joined: Jul 2006
Posts: 4,319
Puyallup, WA
|
I drove the car the other day for the first time in a while, and was frightened to hear a clattering noise in the drivetrain. It is a clatter that seems to be active when even a slight load is on the motor, but not evident at idle or cruise. It seems to be coming from the tranny / bellhousing area. I immediately thought it was a flex-plate bolt coming loose, and clattering against the inspection cover (thats exactly what it sounds like), but when I pulled the inspection cover I found all bolts to be tight and happy. There is a slight rotational mark on the inspection cover, but none of the flex-plate bolts seem to have reciprical marking and that mark on the flex plate could be from years gone by ????.
Everything else seems to look good. I checked the starter bolts and all the bell housing bolts, all are tight. Rear tranny mount seems good. Motor has a Moroso solid mount on the driver side and a rubber stock mount on the passenter side, both look fine and the motor does not appear to be moving.
What else could be making a clattering sound that would sound just like inspection cover clatter????
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
|
|
|
Re: Please help diagnose this noise.....
[Re: rickraw]
#1194532
03/10/12 07:24 PM
03/10/12 07:24 PM
|
Joined: Jul 2006
Posts: 4,319 Puyallup, WA
StealthWedge67
OP
master
|
OP
master
Joined: Jul 2006
Posts: 4,319
Puyallup, WA
|
Stock flexplate. never did it while sitting, more when the car was moving. I'll look the flex-plate over real good. Where do they tend to crack?
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
|
|
|
Re: Please help diagnose this noise.....
[Re: rickraw]
#1194534
03/10/12 08:00 PM
03/10/12 08:00 PM
|
Joined: Jul 2006
Posts: 4,319 Puyallup, WA
StealthWedge67
OP
master
|
OP
master
Joined: Jul 2006
Posts: 4,319
Puyallup, WA
|
Well, took a good look at the flex-plate. I don't see any cracks or issues. I think I'm going to go drive it without the inspection cover and see if I get the noise or not. If I don't, then at least I know where its at. If I still get it, then I know I'm barking up the wrong tree.
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
|
|
|
Re: Please help diagnose this noise.....
[Re: 383man]
#1194537
03/11/12 01:14 AM
03/11/12 01:14 AM
|
Joined: Jul 2006
Posts: 4,319 Puyallup, WA
StealthWedge67
OP
master
|
OP
master
Joined: Jul 2006
Posts: 4,319
Puyallup, WA
|
Well, I took it for a drive with the inspection cover off, and the noise went away. Tried to reinstall it, immediate clatter. I can see where the bolts are hitting the cover, and it donned on me that the cover is original to the car, which originally had an 11" converter. There is a channel stamped into the cover that follows the path of the bolts, and with the 10" converter that is in it now, the bolts fall inside that channel.
However, I still don't understand why this would just all of the sudden become a problem. Could there be something going on with the converter or front pump that is pushing the converter forward?
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
|
|
|
Re: Please help diagnose this noise.....
[Re: StealthWedge67]
#1194539
03/11/12 02:20 AM
03/11/12 02:20 AM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
The conv could be balloning... just put a washer under the 2 bolts to move the cover out or just bow it out some EDIT Like said... check the end play on the crank
Last edited by MR_P_BODY; 03/11/12 02:21 AM.
|
|
|
|
|