This will take you to the main site where there is history, technical information and other information on these cars.
This takes you back to the main page of the forums.
This is the control panel to change your password, information and preferences on this message board.
Click here if your lost your password or need to register on this message board. You must be a registered user to post. Registration is free.
Search this board for information you need.
Click here to buy cool Squarebirds mechandise.
Click here to support Squarebirds.org. For $20 annually receive 20mBytes webspace, a Squarebirds e-mail address and member's icon on the message board.
  #21  
Old 06-09-2012, 04:21 PM
KULTULZ
 
Posts: n/a
Question

There are several ways to hide engine noise(s). If weak lifters, a solvent may silence them.

Have they diagnosed the noise as weak lifters? They are expensive to replace as you need to remove the intake. I would be more concerned with worn rockers and shafts.

There is a bleed-down procedure to perform to determine a weak lifter(s). Did you read the referring URL?
Reply With Quote
  #22  
Old 06-10-2012, 11:17 AM
JohnG's Avatar
JohnG JohnG is offline
John
 
Join Date: Jul 28 2003
Posts: 2,228
JohnG is on a distinguished road
Default

I'm confused. There is a bent pushrod. Why not just replace the bad pushrod, check out the valve train and see how the car does? Why replace the lifters?

The intake manifold is not only a chore to work with (weighs a ton) but the choice and installation of the associated gaskets requires patience and care.

In short, until you find out it's broke, don't work on it?
Reply With Quote
  #23  
Old 06-10-2012, 01:39 PM
lawyercalif lawyercalif is offline
Experienced
 
Join Date: May 12 2011
Posts: 240
lawyercalif is on a distinguished road
Default

Quote:
Originally Posted by JohnG View Post
I'm confused. There is a bent pushrod. Why not just replace the bad pushrod, check out the valve train and see how the car does? Why replace the lifters?

The intake manifold is not only a chore to work with (weighs a ton) but the choice and installation of the associated gaskets requires patience and care.

In short, until you find out it's broke, don't work on it?
I agree removing the intake and replacing it is a real pain. Getting it back on without oil leaks from the front or rear takes skill, patience and luck. I just went through this and we had to redo it twice to keep it from leaking. If it were me I would just replace the pushrod.
Reply With Quote
  #24  
Old 06-10-2012, 05:47 PM
partsetal's Avatar
partsetal partsetal is offline
Super-Experienced
 
Join Date: Jun 4 2005
Posts: 527
partsetal is on a distinguished road
Default

There is a tool to excract lifters without removing the intake. I've used it to remove lifters that were damaged by bent pushrods. In the three episodes of bent pushrods, the problem was stuck valves. These were parts car motors that I was starting for evaluation. You can replace the bent pushrod, but if you don't find the cause, you will surely bend the replacement.
Rust or carbon was the reason for the stuck valves. I was able to free up several, but there were some that i could not.
Carl
Reply With Quote
  #25  
Old 06-10-2012, 05:52 PM
JohnG's Avatar
JohnG JohnG is offline
John
 
Join Date: Jul 28 2003
Posts: 2,228
JohnG is on a distinguished road
Default

So you're saying the bent pushrod is a symptom of another problem?

In that case, what methods would you use to track down the cause? Observe the valve train in action as you turn it over by hand? Compression test?

Do we know what kind of history this motor has? How oid since rebuild? Oil consumption? Anything?

I am mainly a motorcycle guy. If someone bent a pushrod on a bike it was due to over-revving or a missed shift. Both of those things have little to do with an automatic tranny sedate TBird.
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 01:36 PM.

Driving, racing or working on cars can be hazardous. The procedures and advice on this website including the message board are opinion only. Squarebirds.org and its webmasters and contributors do not guarantee the correctness of the advice and procedures. The Squarebirds.org and its webmasters assume no liability for any damage, fines, punishment, injury or death resulting from following these procedures or advice. If you do not have the skills or tools to repair your car, please consult a professional. By using this site you agree to hold harmless the Squarebirds.org, its authors and its webmasters from any resulting claim and costs that may occur from using the information found on this site.

Powered by vBulletin® Version 3.6.8
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Any submissions to this site and any post on this site becomes property of Squarebirds.org . The webmasters reserve the right to edit and modify any submissions to this site. All material on this is site is copyrighted by the Squarebirds.org. Reproduction by any means other than for personal use is strictly prohibited. Permission to use material on this site can be obtained by contacting the webmasters. Copyright 2002-2016 by Squarebirds.org.