I need help - ClassicOldsmobile.com

LinkBack Thread Tools Search this Thread
Old March 16th, 2011, 10:42 AM   #1
Registered User
Thread Starter
Join Date: Mar 2011
Posts: 100
I need help

if my piston in my 455 are rattling in the block what caused this. I must be honest when I first go the car I was having a little fun with it because it ran very well when i FIRST GOT IT NO BLOW BY NO BLUE SMOKE NOTHING AND WOULD LIGHT UP A SET OF TIRES MOTOR IS BASICALLY STOCK HIGH RISE INTAKE HIGH PERFORMANCE, FUEL PUMP 12 BOLT POSI. iN PROGRESS OF BASIC REBUILT NOT TRYING TO GO BROKE $$$$$$ ARE HARD TO COME BY
antweave is offline   Reply With Quote
Old March 16th, 2011, 12:24 PM   #2
RAMBOW's Avatar
Join Date: Mar 2009
Location: Bothell, WA
Posts: 1,625
broken piston skirt?

definte rattling? Do you mean now with the engine torn down when you turn the motor over by hand they are rattling in their bores, or are you talking about a rattling sound when its running?
RAMBOW is offline   Reply With Quote
Old March 16th, 2011, 12:45 PM   #3
Registered User
Thread Starter
Join Date: Mar 2011
Posts: 100
no rattling while it was running it is being torn down now for a basic rebuild my uncle is the master builder but he want to try to save me money. He says if the stock cam and lifter don't show any issuue I should reuse them but everything else will be new bored .30 psiton you know just the basics
antweave is offline   Reply With Quote
Old March 16th, 2011, 04:14 PM   #4
Olds Dreamer
alek72us's Avatar
Join Date: Oct 2010
Location: Tooele Ut
Posts: 471
u have three "i need help" post. ur not asking for much are u. lol

if ur piston is rattling in ur block that is not good. could be brokin piston skirt, all ur rings broke but then u would have blow by. or ur piston pin came loose. ur timing could of been up to high and u was hearing pinging from todays crappy gas. do u know what kind of pistons are in it and what u had ur timing set at?

ur piston probably wasnt rattling.
alek72us is offline   Reply With Quote
Old March 16th, 2011, 05:07 PM   #5
Connoisseur d'Junque
MDchanic's Avatar
Join Date: Sep 2010
Location: The Hudson Valley
Posts: 21,152
To quote myself:
Originally Posted by MDchanic View Post
So it sounds like you think it's got a rod knock? Are you sure it's not a lifter?

If your uncle is experienced, did he hear it, and agree that that was the problem? Have you taken the oil pan off yet and checked the rod bearings?

It's hard to make good recommendations without more information.
I'd recommend sticking to one thread if you can , to avoid confusion.

- Eric
MDchanic is offline   Reply With Quote
Old March 17th, 2011, 06:10 AM   #6
Registered User
Join Date: Oct 2009
Location: Erie,PA
Posts: 3,814
I think whoever built it the first time was trying to save money,and now it's apart.
Do you know for sure that the piston were what you heard rattling?
Was there any difference in oil pressure or temperature before & after this happened?
Did you switch to 87 octane during any of this?
It's a little hard to troubleshoot without seeing it.
507OLDS is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
need help-locks on forums,admin help! meoff Site Help 1 August 29th, 2013 01:15 PM
Need need need driveshaft coppercutlass Parts Wanted 11 March 1st, 2013 08:33 AM
need help deciding the best exhaust!!!! HELP cutlassclay Small Blocks 9 May 11th, 2012 07:31 AM
gauges help help help MJAKS462 Small Blocks 5 April 15th, 2010 03:34 PM
HELP I have my Qjet apart and need help!! silverriff General Discussion 4 March 24th, 2010 07:36 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off

All times are GMT -7. The time now is 07:48 PM.

All content Copyright 2017 by Internet Brands, Inc. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.