bad lifter - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 03-02-2005, 03:39 PM
Matts99Sierra's Avatar
Member
 
Join Date: Oct 2004
Location: Chardon, OH
Age: 32
Posts: 278
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
bad lifter

i just tore apart my 350 chevy and checked for what was thought to be a collapsed lifter. i pulled a lifter out and the bottom where it hits the cam was worn down and cupped. all the rest of them look fine. any ideas on why this happened? a stuck lifter? will it be ok to replace just 1 or do i have to replace them all. oh, and its a hydraulic lifter setup. thanks ahead andi appreciate the info.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 03-02-2005, 03:44 PM
johnsongrass1's Avatar
Race it, Don't rice it!
 
Last photo:
Join Date: Jul 2002
Location: Columbia, Mo
Age: 37
Posts: 4,062
Wiki Edits: 0

Thanks: 0
Thanked 8 Times in 8 Posts
flat cam lobe.

Rockwell hardness problem

QC tech

Plugged oil passage.

Could be a number of things.

How many miles?
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 03-02-2005, 03:50 PM
Matts99Sierra's Avatar
Member
 
Join Date: Oct 2004
Location: Chardon, OH
Age: 32
Posts: 278
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
i got the motor with just under 500 miles on it... it probably has about close to 1000 now.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 03-03-2005, 10:33 AM
cuda66273's Avatar
Member
 
Last photo:
Join Date: Sep 2002
Location: Beaverton Oregon
Age: 61
Posts: 90
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Are there one direction grooves in it or is it nicely rounded out all the way around?
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 03-03-2005, 10:38 AM
Siggy_Freud's Avatar
Hotrodders.com Moderator
 
Last photo:
Join Date: Dec 2003
Location: Portland, Oregon
Age: 29
Posts: 2,371
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
You could replace the 1 and risk it being the problem. Or, with it being torn down half way already you could put in a new cam and new set of lifters and play it a bit more safe. Might just pull the cam to inspect if and if it looks good toss it back in.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 03-03-2005, 10:46 AM
Siggy_Freud's Avatar
Hotrodders.com Moderator
 
Last photo:
Join Date: Dec 2003
Location: Portland, Oregon
Age: 29
Posts: 2,371
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Sorry added this in in wrong post.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 03-03-2005, 12:49 PM
Matts99Sierra's Avatar
Member
 
Join Date: Oct 2004
Location: Chardon, OH
Age: 32
Posts: 278
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
rounded

its rounded out all the way around... theres no directional grove to it. oh and i pulled the rest of the lifters and they were ALL the same way except for 1. there was only 1 good lifter and rod in the whole engine.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 03-03-2005, 12:55 PM
Siggy_Freud's Avatar
Hotrodders.com Moderator
 
Last photo:
Join Date: Dec 2003
Location: Portland, Oregon
Age: 29
Posts: 2,371
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by Matts99Sierra
its rounded out all the way around... theres no directional grove to it. oh and i pulled the rest of the lifters and they were ALL the same way except for 1. there was only 1 good lifter and rod in the whole engine.
They should all be somewhat rounded as they spin in their bore as the engine runs.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 03-03-2005, 01:57 PM
DoubleVision's Avatar
Not Considered a Senior Member
 
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 40
Posts: 10,643
Wiki Edits: 0

Thanks: 13
Thanked 56 Times in 53 Posts
Your likely going to have to replace the cam. You could replace the lifters, but the problem will repeat itself. My neighbor just went through this same thing, he had pulled the intake twice to replace 1 lifter that kept cupping, he called and asked what the problem was and I said "replace the cam" he pulled the cam and saw the lobe was almost gone.
If your having problems with such low miles it sounds as if the cam wasn`t broken in properly. After doing the cam swap and breaking in the new one, I would add a can of sea foam to help clean the trash out of the oil galleries, since it`s likely now that it`s worn down the lifter, after the break in, pour the sea foam in, run it 20 minutes at idle, then change the oil and filter. This also happens alot to engines that sit a while, I`ve seen many a small block chevy do this when it sat.
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 03-03-2005, 04:00 PM
Member
 
Join Date: Dec 2004
Location: Madison, WI
Posts: 1,885
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Flat cams suck

Yup, the cam is junk and the lifters are junk. The face of the camshaft will look worse than the lifters. If you can pull the motor and tear it down for a proper cleaning and inspection that would be best. Sticking a new cam and lifters in without tearing down is a risk, due to the debris floating around. Bottom line though is if there is damage to bearings and cylinder walls it's already occurred. Just keep an eye on the oil pressure. When you do install the new cam and lifters make sure to use assembly lube on the cam and face of the lifters, lots of it. Also give each lifter a reality check as to fit and ease of rotation in the bore. Make sure it is a tight fit but not binding. It is also mandatory that you prelube the motors oiling system prior to firing the first time. Be sure to follow the camshaft manufacturers' specs for break-in springs as well, if needed. Also, once you take the cam out if you can bend over and inspect the camshaft bearings for any marks or wear that would be worth some piece of mind.

Most important, make sure everything is timed correctly so as the motor fires right away and keep the RPM above 2000, in the 2500 range is where keep it, for at least 20 minutes. We also add a can of GM Engine Oil Supplement for break-in. It is loaded with zinc, which is an excellent high pressure lube. After break-in change the filter and cut it open. If you have a problem it will show up in the pleats of the filter. Also run back through lash while the engine is burn your fingers hot still and lash to spec, assuming a solid flat tappet cam. When the motor cools to ice cold recheck lash and now you have the proper spec to set them cold.

There are a ton of reasons for the camshaft failure, improper break-in is one. Of late though with the shakeup in the lifter industry camshaft failure on small block Chevys are high. The indexing of the lifter bores is much more critical it seems these days in it's relationship to the lifter and camshaft taper position on the lobe. If things are off lifters may not spin properly and eat a cam within minutes. Sometimes it just happens for no apparent reason and you stick a new cam and lifters in and viola, not a problem. One of these days I'll share the work the shop went through on camshaft failure and the things we found out working through the issue with Dema at Elgin Cams.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 03-03-2005, 04:02 PM
Ghetto Jet's Avatar
current hot rod: CTS-V
 

Last journal entry: Lets Get Started With the Improvements
Last photo:
Join Date: Nov 2003
Location: Pennsylvania
Age: 27
Posts: 1,716
Wiki Edits: 0

Thanks: 10
Thanked 4 Times in 4 Posts
That's alot of metal shavings to send through an engine.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

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

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Valve Lash adjustment hiball Engine 36 05-11-2009 10:12 AM
Spun bearing or bad lifter? He drove it 25 miles home elukas Engine 7 06-22-2004 06:27 PM
Fractured lifter slvrbllt Engine 9 04-30-2004 08:13 PM
bad lifter? 88 olds Engine 2 12-23-2003 04:19 PM
bad hydraulic lifter? KeithB123 Engine 2 09-28-2003 12:42 PM


All times are GMT -6. The time now is 07:48 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.