Piston replacement question - 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 10-06-2007, 10:47 PM
SimplyMuscle's Avatar
New Member
 
Last photo:
Join Date: May 2004
Location: Sunny South Florida
Age: 35
Posts: 10
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Piston replacement question

I recently purchased a car with a 383 stroker engine. The car was not running right so I did some tests and determined it was a bad piston. After removing the heads I saw that two of the pistons were damaged. The other pistons have no problems. Would I be able to replace those two damaged pistons or do I have to replace all 8 of them?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 10-07-2007, 12:40 AM
DoubleVision's Avatar
Not Considered a Senior Member
 
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 40
Posts: 10,655
Wiki Edits: 0

Thanks: 15
Thanked 59 Times in 56 Posts
Depends on what shape the others are in. I would also try and find the root cause of why the 2 pistons are damaged. if you just replace 2 you`ll have to carefully rehone the 2 cylinders and make sure you use plenty of lube like WD40 to keep the hone dust down. then afterwards clean the 2 cylinders and clean them until you can`t get any gray color on a paper towel. Then I would use carb spray to clean the bottom end of the engine good to try and clean everywhere else before I reassembled.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 10-07-2007, 08:50 AM
carsavvycook's Avatar
My 2 cents worth
 
Last photo:
Join Date: Sep 2007
Location: Lakeside, CA
Age: 57
Posts: 2,855
Wiki Edits: 3

Thanks: 2
Thanked 2 Times in 2 Posts
You could replace just the 2 pistons, but make sure you get the same brand. Which 2 pistons did it take out?
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 10-07-2007, 01:04 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: 4,267
Wiki Edits: 49

Thanks: 0
Thanked 4 Times in 4 Posts
There are two ways to look at this problem. One is to determine the root cause and fix that then just replace the two bad pistons. This is the cheap way out, however to do it right the pistons must be from the same manufacturer and have the piston/rod combination weighed and have the weight matched to the units that were removed. This is the "poor man's" method of not ruining your engine by running it out of balance.

The right way to do this is to fix the root cause and then replace the entire set of pistons. Because your engine is a stroker it is important to have the rotating assembly properly balanced. The method mentioned above will work but isn't perfect and still may create some vibrations. Replacing the entire set of pistons and having the rotating assembly balanced is the only "correct" way to ensure longevity and reliability.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 10-07-2007, 01:26 PM
Registered User
 
Last photo:
Join Date: May 2006
Location: Maine
Posts: 152
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I'd probably replace all 8 pistons just to be on the safe side. Pistons don't cost that much, and if you put them in there you know exactly what you have for 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
big block chevy piston to wall clearance question Ratoflic Engine 24 06-22-2006 04:16 PM
Question about factory replacement parts and primer makaveli200369 Body - Exterior 2 05-01-2006 08:40 PM
Piston number question kohle1ce Engine 3 04-30-2006 01:34 PM
Quick speed pro piston question.. 357ford Engine 2 10-21-2004 05:53 PM
Piston question?? HemmiGremmie Engine 1 08-28-2004 05:09 PM


All times are GMT -6. The time now is 05:02 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.