Harmonic Balencer SBC 350 ? - 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 08-30-2009, 11:35 AM
solidaxel's Avatar
Member
 

Last journal entry: Project garage complete!
Last photo:
Join Date: Jul 2003
Location: So. Arizona
Posts: 558
Wiki Edits: 0

Thanks: 2
Thanked 1 Time in 1 Post
Harmonic Balencer SBC 350 ?

I need to buy a new damper for the 350 SBC that I am working on. The question I have is will the least expensive damper work
any better than a high priced one.
This is in a 1/2 ton pick up street truck. What do you recommend?
What are the downfalls with a cheap damper Vs. a expensive one, who makes the the "right one".

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 08-30-2009, 11:51 AM
bullheimer's Avatar
NEVER use credit cards!
 

Last journal entry: car with tt2's, (stockers going back on)
Last photo:
Join Date: Jan 2002
Location: North of Seattle
Posts: 2,532
Wiki Edits: 0

Thanks: 0
Thanked 5 Times in 4 Posts
first off do NOT buy this part from summit!!!
go to local parts store like napa and get the cheapest one they got. i got one from summit a few years ago and had to have the snout milled to line up my pulleys they are about $75
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 08-30-2009, 03:09 PM
Registered User
 
Last photo:
Join Date: May 2009
Location: S/E Michigan
Posts: 650
Wiki Edits: 0

Thanks: 0
Thanked 9 Times in 9 Posts
Cheap does not mean quality, and since a lot of CHEAP parts tend to come from overseas, they are not made correctly. An improperly made balancer can lead to bearing and crank failure.

Do some research before buying, just because a part happens to get an SFI rating, doesnt mean it will hold up and protect your motor.

BHJ
FluidDampr(not Fluid Damper)
ATI
TCI
All make quality balancers. BHJ makes several different balancers for stock and racing use. You can always get a balancer from GM also.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 08-30-2009, 03:22 PM
ericnova72's Avatar
More for Less Racer
 
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 47
Posts: 9,479
Wiki Edits: 0

Thanks: 29
Thanked 490 Times in 445 Posts
PowerBond also has a good reputation on the engine machinist forums like SpeedTalk for their inexpensive balancers, and suprisingly so does Pioneer. Stay away from Professional Products balancers, many documented failures there.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 08-30-2009, 07:17 PM
Registered User
 
Last photo:
Join Date: May 2008
Location: ohio
Posts: 1,519
Wiki Edits: 0

Thanks: 44
Thanked 46 Times in 43 Posts
Well I just got a summit harmonic balancer and it fit just as good as any balancer that I have used. It was around 55 or so and it looks to be of good quality and a little better then the ones you get at the auto parts store like autozone etc. I have a TCI rattler on my other engine but it cost almost 300 bucks but its a very nice built unit. ATI is the best for a elastomer type balancer the fluid ones I have been told by several machine shops to stay away from. They say the best are the elastomer type. I got that from Watson and Rupple performance from Sarahsville Ohio and they did all of my engine machining and they also say good things about powerbond.

Eric
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 08-30-2009, 08:04 PM
406 bug's Avatar
9.82 @ 139mph
 
Last wiki edit: Finding vacuum leaks Last photo:
Join Date: Nov 2007
Location: phoenix, arizona
Posts: 582
Wiki Edits: 1

Thanks: 0
Thanked 1 Time in 1 Post
As mentioned, stay clear of fluid type dampers. Summit has an sfi damper that is made in Australia that sells for just over $100 bucks that is a very nice unit. Don't get sucked in by the hype associated with the 300 dollar units unless you plan all out race or just want to impress others.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 08-30-2009, 10:57 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 13,083
Wiki Edits: 326

Thanks: 779
Thanked 1,057 Times in 879 Posts
Take a look here. These guys have been rebuilding stock dampers for years. They press them apart and intall new elastomeric material under extreme pressure with hydraulic presses while clocking the hub exactly to the inertia ring TDC groove. It's unusual these days to find good quality for a reasonable price, but here it is....
http://www.damperdoctor.com/Merchant...egory_Code=CHE
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 08-30-2009, 11:35 PM
bullheimer's Avatar
NEVER use credit cards!
 

Last journal entry: car with tt2's, (stockers going back on)
Last photo:
Join Date: Jan 2002
Location: North of Seattle
Posts: 2,532
Wiki Edits: 0

Thanks: 0
Thanked 5 Times in 4 Posts
its been since 2001 i got mine from summit, it was made in australia. either it was too long or it ate seals like a killer whale, either way it had to be machined to work. i pitched a ***** to summit, maybe they fixed'em, but i wouldnt buy another one from them anyway. (don't get me wrong, i buy half my stuff from them)
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 08-30-2009, 11:48 PM
BackYardRacer
 
Join Date: Mar 2009
Location: grand island ne.
Age: 30
Posts: 119
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
if its not going to be any high out put truck just find a good used one off a 305 or 350 same crank its not hard to find good used one around here any way and they are cheap
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 08-31-2009, 01:04 AM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 13,083
Wiki Edits: 326

Thanks: 779
Thanked 1,057 Times in 879 Posts
Quote:
Originally Posted by backardracer
if its not going to be any high out put truck just find a good used one off a 305 or 350 same crank its not hard to find good used one around here any way and they are cheap
They're cheap because there's a good chance the inertia ring has slipped in relation to the hub, rendering them incapable of providing valid indexing to time the motor with a light. Damper Doctor.
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 08-31-2009, 06:07 AM
Registered User
 
Last photo:
Join Date: Jun 2007
Location: TN.
Posts: 287
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by backardracer
if its not going to be any high out put truck just find a good used one off a 305 or 350 same crank its not hard to find good used one around here any way and they are cheap
Do not use a 305 balancer on a 350, if you do you will have a vibration.

sam-missle
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 08-31-2009, 06:32 AM
ericnova72's Avatar
More for Less Racer
 
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 47
Posts: 9,479
Wiki Edits: 0

Thanks: 29
Thanked 490 Times in 445 Posts
Quote:
Originally Posted by sam-missle
Do not use a 305 balancer on a 350, if you do you will have a vibration.

sam-missle
BS, its the same balancer. Internal balance SBC.
Reply With Quote Quick reply to this message
  #13 (permalink)  
Old 08-31-2009, 06:50 AM
Registered User
 
Last photo:
Join Date: Jun 2007
Location: TN.
Posts: 287
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by ericnova72
BS, its the same balancer. Internal balance SBC.
NO BS, different balancer

sam-missle
Reply With Quote Quick reply to this message
  #14 (permalink)  
Old 08-31-2009, 09:06 AM
ericnova72's Avatar
More for Less Racer
 
Join Date: Jan 2007
Location: S.W. Lower Michigan
Age: 47
Posts: 9,479
Wiki Edits: 0

Thanks: 29
Thanked 490 Times in 445 Posts
Quote:
Originally Posted by sam-missle
NO BS, different balancer

sam-missle
Care to provide part #'s to prove it?? Vibration from changing an internal(or "neutral") balance damper for another neutral balance damper even if they are different weights means something is wrong with the balancer or the crank, but they are interchangable, from 262 thru 350 cubes, the 400 is the only SBC oddball.

Next you are going to tell me the flexplates are different too . I'm not talking about 2-piece seal vs 1-piece seal either, that is a different issue.
Reply With Quote Quick reply to this message
  #15 (permalink)  
Old 08-31-2009, 10:35 AM
bullheimer's Avatar
NEVER use credit cards!
 

Last journal entry: car with tt2's, (stockers going back on)
Last photo:
Join Date: Jan 2002
Location: North of Seattle
Posts: 2,532
Wiki Edits: 0

Thanks: 0
Thanked 5 Times in 4 Posts
maybe he's talking @ diameters. go with the 8" if you can miss your timing pointer.
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:
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
305 head on a 350 sbc Trav Engine 43 04-13-2013 11:50 AM
Distributor Tuning and Theory - Part 1 Rick WI Engine 35 04-26-2011 12:38 AM
Why not a 350 sbc? bowtieorbust Engine 29 09-05-2008 09:43 AM
Late model 350 SBC Question Smoker113 Engine 3 02-19-2005 10:12 PM
0.060 over 350 sbc or 0.040 over 400 splayed cap sbc tony350ss Engine 4 05-17-2003 09:02 PM


All times are GMT -6. The time now is 02:36 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.