Hot Rod Forum : Hotrodders Bulletin Board - Reply to Topic
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> SBC Collapsed lifter, or something else???
User Name
Password
lost password?   |   register now

Thread: SBC Collapsed lifter, or something else??? Reply to Thread
Title:
  
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :

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.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
08-08-2010 08:14 AM
Duntov The new cam and lifters will quickly pay for themselves in fuel savings and fix the problem, unless Monster is right and you missed a valve spring. When you pull the cam out, try a dial caliper both ways, on each lobe. Subtract the minimum reading from the maximum, multiply by 1.5 to the get approximate lift. I don't expect two of the holes to be exactly the same. A old smallblock cam is like having eight different cams in one; with each cylinder programmed and directed to do something a bit different from the rest.

Side note.. 7 years ago we tore down a 283 that everyone in town thought was a strong 327. Not only was it a 283 but had never been opened up and worn completely out in every way. The cam was the worst I'd ever seen come out of anything that wasn't skipping. most lobes rounded off but all still lifting at least some. No telling what kind of timing or had or lift, but it was an outrageous tire spinner. A 67 short bed 3 speed and was geared very low. Doesn't take a lot of lift to achieve bottom end torque but I'll never forget how bad that cam looked and how impressive a burnout it did the day before we took it down. Strange thing, but results not typical. I like a new cam
08-08-2010 01:56 AM
TheMonster Maybe a broken valve spring.
08-07-2010 11:49 PM
dsb350v8 no i ddint put a new cam in and i checked and seen that the lifter was still coming up when i crank the engine over, so its not a bad cam. and im pulling the engine out and gonna chevk it out
08-07-2010 05:58 AM
27 t did you install a new cam? what brand... but more than likely lost a cam lob. lifter may have worn down to the point it has a hole in the bottom of it and is bleeding oil out.. i would say pull the intake...
08-06-2010 10:16 PM
dsb350v8
SBC Collapsed lifter, or something else???

i have a 1972 gmc pick-up with a 350. I had driven the truck for atleast 500 miles with no prblems, then i started hearing a slight ticking sound, and at first thought it was just a hedder leak, so i checked the header gaskets and there was no problems. i continued to drive the truck for another day, and then it sat for about 2 weeks and i started the truck up to move it and it had a severe ticking coming from under the valve cover, which seemed like around number 5 cylinder and you could hear it clearly in the exhaust too. so i pulled the valve cover and i found that the intake rocker arm on cylinder 5 was way loose, i checked the rocker nut and it was tight, i checked the stud to make sure it hadnt pulled out, and i also checked the pushrod to see if it was bent and it wasnt. the pushrod does have i higher wear line on the lifter end than the exhaust rushrod on that cylinder. so i was wondering if this sounds like a collapsed lifter or maybe a bad cam, or just something more simple.

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


All times are GMT -6. The time now is 03:05 PM.


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.