Bad rokeror Lifter???
Thread Starter
Burning Brakes
Joined: Feb 2010
Posts: 754
Likes: 10
From: Midway GA
Bad rocker or Lifter???
Came home today hearing a slightly elevated tapping pass side. Here he vids _http://
Got valve cover and here is the latest
Got valve cover and here is the latest
Last edited by D&C vette; Jul 13, 2014 at 08:56 AM.
Drifting
Joined: Jul 2009
Posts: 1,319
Likes: 64
From: Lakeville, MA
St. Jude Donor '10
Mine was tapping on drivers side and I could push the rocker off the valve by pushing on the pushrod end of the rocker. Lifter was bad and wasn't fully pumping up. Replaced all lifters and everything is perfect now!
Track Junky
Joined: Jun 2007
Posts: 4,075
Likes: 36
From: Orlando Area
Tech Contributor
Got any pics? I ask because my car is making a sort of clapping noise at idle when warm. Anything above idle and the noise goes away. Also not there when car is cold - anything when oil pressure above idle warm "normal" it seems to show up. I suspect lifter but don't know for sure.
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Track Junky
Joined: Jun 2007
Posts: 4,075
Likes: 36
From: Orlando Area
Tech Contributor
Thanks. Think the flat spot was creating the noise or could it have been something else? I'm curious if the flat spot was created intermittantly or did it just lock up and begin grinding itself down.
That lobe of the cam is probably toast as well.
Is the roller still free to rotate it is it locked up?
That lobe of the cam is probably toast as well.
Is the roller still free to rotate it is it locked up?
Thread Starter
Burning Brakes
Joined: Feb 2010
Posts: 754
Likes: 10
From: Midway GA
Cam is toast, lobe has depression in it. Roller rolls but more in a oblong pattern instead if circle. Noise was very noticeable in head, but given the size of the missing metal pieces, gonna tear down entire motor and have it looked at. Thinking about a 402 or dropping a 408LY6 in. Depends on the boss and what she has planned other than 10 yr anniv.
Safety Car
Joined: Jan 2004
Posts: 4,974
Likes: 14
From: Pinellas Park Fl
St. Jude Donor '08-'09 & '12, '14
Thanks. Think the flat spot was creating the noise or could it have been something else? I'm curious if the flat spot was created intermittantly or did it just lock up and begin grinding itself down.
That lobe of the cam is probably toast as well.
Is the roller still free to rotate it is it locked up?
That lobe of the cam is probably toast as well.
Is the roller still free to rotate it is it locked up?
Racer
Joined: Jan 2013
Posts: 257
Likes: 29
From: The Sunshine State
D&C,
I'm surprised that the sound on the video wasn't worse given the damage you had - I would have expected it to be much louder than that !! Good thing you investigated quickly.
Good luck with your rebuild !