vibration - Hot Rod Forum : Hotrodders Bulletin Board -- 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
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 12-24-2003, 04:20 PM
dankarol's Avatar
40 nash
Join Date: Dec 2003
Location: rainier oregon
Age: 77
Posts: 7
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Cool vibration

I have a slight vibration that i can feel through the car when i have the speed around 65 to 70+. the chevy 350 has been rebuilt with .030 over. it has about 3000miles on it. I had a new harmonic balancer put on it, and have taken out the drive shaft and had it rebalanced and same with all the tires. But i can still feel it through the steering columm and the floor board. Any idea of what to check? it was ok before i pulled the engine and trans and drive shaft. Also while i am asking whats a good cruise control out on the market that isn't vaccum and will work with a electric speed odometer? Dan

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 12-24-2003, 05:14 PM
DoubleVision's Avatar
Not Considered a Senior Member
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 43
Posts: 10,733
Wiki Edits: 0

Thanks: 19
Thanked 77 Times in 71 Posts
are you sure no rims are bent? any tires out of round? did you mark the driveshaft the first time you removed it to be sure it`s orientation was correct upon reinstallation? the balancer is a 350 balancer and not a 400? how about the flywheel? have you checked the transmission mount and motor mounts to assure all are tight and none are broken? in some cases I`ve seen a flexplate cause vibration problems and none appeared warped to the naked eye. have you checked the front wheel bearings? I`d go over all these things with a fine tooth comb.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 12-24-2003, 05:17 PM
Registered User
Last wiki edit: Mopar tapered axle rear brake conversion
Last journal entry: What I'm doing now...
Last photo:
Join Date: Jan 2002
Posts: 4,263
Wiki Edits: 49

Thanks: 0
Thanked 8 Times in 7 Posts
After checking the previously suggested problem areas ask yourself a couple questons.

First: Did you have the machine shop balance the rotating assembly when the engine was rebuilt? If not, and major components like pistons were replaced, that could be the cause of the problem.

Second: If the vibration is not engine related and only occurs at a particular speed, make sure you didn't over torque the drive shaft bolts. The U-bolts holding the driveshaft to the pinion yoke only require 17 foot pounds of torque and no more. Over tightening these bolts can easily cause a drive train vibration. Been there, done that.

Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 12-24-2003, 06:24 PM
slavegear's Avatar
New Member
Join Date: Dec 2003
Location: adelaide,australia
Age: 55
Posts: 19
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Wink vibration

hello and merry xmas to all,i had the same problem in one of my cars, the vibration was at a partical road speed and no engine speed,my universal joints on my driveshaft were past the service date.a simple test is to try to move driveshaft uni. joints in the oposite direction to which they are designed to go,if any movement is found please replace them, as if they let go your driveshaft may come through your floor or dig in the road and flip you over,bad situation,hope this helps.later.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 12-24-2003, 11:15 PM
dankarol's Avatar
40 nash
Join Date: Dec 2003
Location: rainier oregon
Age: 77
Posts: 7
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks about checking the u joints. when I had the drive shaft out I had them checked, they were ok, I don't remember if I align them to each other, don't know if that will help any word on that? thanks Dan
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


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

All times are GMT -6. The time now is 04:33 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.