![]() |
Register or Log In To remove these advertisements. |
|
|
|
Thread Tools | Display Modes |
![]() |
#1 |
Registered User
![]() Join Date: Jan 2013
Location: Roanoke, TX
Posts: 39
|
![]()
Here's a problem I have been working on for several months now. I found the culprit this past weekend, but thought some of you might like to take a stab at it.
Background: '82 C20, 350 SBC, NV4500 5spd trans. Several months ago I installed new GM Performance L31 with serpentine belt setup. I used the 91 TBI setup that was on the old engine but on a new vortec TBI manifold. I also replaced the mechanical clutch setup with a hydraulic clutch setup from a 85-87. The new engine required a new flywheel but I used the same pilot bearing, pressure plate, and clutch disk that was in the 82 because they only had about 5K miles on them. I did replace throw-out bearing. OK, to the problem... After everything was installed again it was out for a test spin. The new clutch setup worked very well. Engine ran well and I was very pleased for the first 15 minutes or so. Then a loud squeal began from under the truck. It was localized to the bell housing area. I used a probe to try and isolate the noise... it was definitely in the bell housing. ![]() Since the pilot bearing was real sloppy in the crankshaft, I removed the trans and clutch assembly and replaced the pilot bearing. After reassembly and 15 minutes into the test drive the noise reappeared. ![]() Now it is your turn... what you think? Ask any questions you have... let's see if you come up with the same culprit I did. Mike |
![]() |
![]() |
Bookmarks |
|
|