Rear Vibration
Thread Starter
Instructor
Joined: Jan 2022
Posts: 204
Likes: 65
From: Phoenix, AZ
Rear Vibration
I just put a new Dana 44 diff in my 96 LT4 with manual transmission. The old one howled but no vibration. Now I have a low frequency vibration/hum 65-80mph. I would suspect tires had I not just done all this work. Suggestions? Thx.
Drifting
Joined: Jul 2022
Posts: 1,805
Likes: 365
From: Central Florida
Suppliers of rear ends often have contact from customers with concerns and sometimes they exchange them. If this was purchased / rebuilt the builder (if they are honest) is the best source of help.
Thread Starter
Instructor
Joined: Jan 2022
Posts: 204
Likes: 65
From: Phoenix, AZ
Thx for that suggestion.
Does anybody have a recommendation for a cell-phone-based vibration analyzer? That would allow me to identify drive shaft or wheel/half shaft vibration. Thx
Does anybody have a recommendation for a cell-phone-based vibration analyzer? That would allow me to identify drive shaft or wheel/half shaft vibration. Thx
Racer
Joined: Apr 2016
Posts: 336
Likes: 93
From: San Antonio TX
Thread Starter
Instructor
Joined: Jan 2022
Posts: 204
Likes: 65
From: Phoenix, AZ
There's been several post lately about vibration. If you can identify the frequency, with a couple simple calculations you can identify the source. Cell phones have an accelerometer and you can install an app (I am using Resonance) which provides frequencies and amplitudes.
In my case, it clearly indicates drive shaft vibration, eliminating tire or half shaft vibration. Much less costly "shotgunning" of the problem!
In my case, it clearly indicates drive shaft vibration, eliminating tire or half shaft vibration. Much less costly "shotgunning" of the problem!
Racer
Joined: May 2007
Posts: 306
Likes: 49
From: Florida
Desert Rider, would you mind explaing the howling a little more (frequency, under load, etc) , I think im having the same issue with my Dana 44, thanks, Dude
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Racer
Joined: May 2007
Posts: 306
Likes: 49
From: Florida
I saw this on the ZR-1 forum, culd be our culprit??? https://www.corvetteforum.com/forums...m_content=post