Notices
LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Is this rodnock?

 
Old 04-16-2019, 12:13 AM
  #1  
Teching In
Thread Starter
 
Join Date: Sep 2018
Posts: 1
Default Is this rodnock?


that’s a video of the sound my brothers 96 impala is making

we’ve been told it’s the flex plate but we unbolted the torque converter and slid it back enough to get a good look and dont see any cracks at all . It seems like it would have to be a pretty big crack to make a sound so loud

He just bought this engine and trans from a guy known as “impala mike” whose supposed to be a reputable impala/caprice parts supplier . He says it ran fine before he shipped it to us. Supposedly has like 70k miles

what do you guys think it is and where should we start?
lelandb is offline  
Old 04-16-2019, 11:10 AM
  #2  
Village Troll
iTrader: (2)
 
SS RRR's Avatar
 
Join Date: Oct 2002
Location: Jackstandican
Posts: 9,679
Default

Hard to tell. The speed of the knock seems as if it would be, but doesn't sound deep enough. Sounds more like a playing card on the spokes of a bicycle. Have you checked the oil for bearing material? What you can do is take the heads off, rotate the engine by hand, let a piston go on the downstroke for a 1/2" or so and try to push down on the piston. If the piston pushes down you have discovered the source. There should be no play with the rod/piston during reciprocation. You didn't find any sort of markings on the flexplate as well?
SS RRR is online now  
Old 04-17-2019, 11:01 AM
  #3  
TECH Regular
 
Join Date: Nov 2011
Location: Tucker, GA
Posts: 405
Default

I dunno. If it is bottom end, you've got more than one knocker. The frequency is too quick for just one rod.
atlantadan is offline  
 


Thread Tools
Search this Thread

About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: