Home Menu

Menu


Pontiac - Street No question too basic here!

          
PY Online Forums - Bringing the Pontiac Hobby Together > General Classic PONTIAC TECH > Pontiac - Street > headgasket
Reply
 
Thread Tools Display Modes
  #1  
Old 12-22-2011, 08:06 AM
ultraman's Avatar
ultraman ultraman is offline
Senior Member
  
Join Date: Oct 2006
Location: middle georgia
Posts: 154
Default headgasket
I installed a set of new headgaskets of unknown orgin on a 030 overbore 455,the gasketa protrude into the cyl,is this ok?

Reply With QuoteReply With Quote
  #2  
Old 12-22-2011, 08:11 AM
troy_barker's Avatar
troy_barker troy_barker is offline
Chief Ponti-yacker
  
Join Date: Mar 2003
Posts: 993
Default
into the cylinders? I think not but let others chime in!

__________________
Bring back my 67 GTO: Shes ALIVE as of 2-19-13
previously owned
78 Firebird
67 Nova
64 Nova
Reply With QuoteReply With Quote
  #3  
Old 12-23-2011, 08:10 AM
chiphead's Avatar
chiphead chiphead is offline
Ultimate Warrior
  
Join Date: Nov 2004
Location: Aiken, SC
Posts: 5,188
Default
In a word: No.

The gasket edge that protrudes into the cylinder will glow like a candle. Not good.

__________________
I could explain all this to the girl at the parts store, but she'd probably call the asylum.

White '67 LeMans 407/TH350/Ford 3.89... RIP
Red '67 LeMans. 407/TH400/Ford 3.25
Reply With QuoteReply With Quote
  #4  
Old 12-23-2011, 12:03 PM
PONTIAC DUDE's Avatar
PONTIAC DUDE PONTIAC DUDE is offline
Ultimate Warrior
  
Join Date: Dec 1999
Location: West Central Florida
Posts: 14,756
Post
You want you head gasket to be at least .020 bigger in diameter then any part of the bore hole.

Reply With QuoteReply With Quote
  #5  
Old 12-23-2011, 10:09 PM
77 TRASHCAN's Avatar
77 TRASHCAN 77 TRASHCAN is offline
Ultimate Warrior
  
Join Date: Oct 2008
Location: 31May2013 Temporary home to the world's widest (that we know of) tornado. Lord, NO more Please...
Posts: 6,595
Default
The edge of the gasket is what seals the combustion event, without that seal, the gasket will leak. It would be a mess within the first minute or two of operation.

Make sure the gasket you use, fits the head and the block, as Dude, stated...

Each manufacturer has something in that edge layer that is compressed when the gasket is torqued down, making the seal needed.

__________________
1977 Black Trans Am 180 HP Auto, essentially base model T/A.
I'm the original owner, purchased May 7, 1977.

Shut it off
Shut it off
Buddy, I just shut your Prius down...
Reply With QuoteReply With Quote
  #6  
Old 12-24-2011, 10:36 PM
rod cole rod cole is offline
Chief Ponti-yacker
  
Join Date: Oct 2006
Posts: 790
Default Victor
My victor-reinz gaskets did that tried two sets both the same put felpro on fit perfect. Victor did not seem to care. Rod

Reply With QuoteReply With Quote
Reply

« Previous Thread | Next Thread »

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
Forum Jump


All times are GMT -4. The time now is 02:54 PM.

 

About Us

The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.

 




Contact Us Home
Copyright © 2017