Coolant Port Pitting - Blazer Forum - Chevy Blazer Forums


General Chat Chat about all things Blazer (and related vehicles). Off-topic stuff should be in the lounge, and all mechanical problems should be posted in the proper forum.

Reply
 
 
 
Thread Tools Search this Thread
  #1  
Old 07-10-2018, 10:08 PM
New Member
Thread Starter
 
Join Date: Jul 2009
Posts: 4
steveduns is on a distinguished road
Default Coolant Port Pitting

Need some advice. I'm rebuilding my 2000 4.3L and getting ready to install the intake manifold. Heads have pitting around a few of the coolant ports. They checked out at the machine shop but don't know if they looked at the pitting specifically. The aluminum intake has some pitting as well but not as bad. I was taping off the heads to fill bad spots with JB Weld when I began to question what I was getting ready to do. Attached are some pics of the pitting and the Felpro gasket that came with the rebuild kit.
- Is the pitting bad enough to go thru filling with the JBW?
- I've read differing opinions on using JBW for this - any opinions?
- Is there a better gasket to use instead of the felpro for sealing when there are pits?
Blown intake gasket is the reason for rebuild so I want to make sure to get this right. Appreciate any insight you guys have.
Attached Thumbnails
Coolant Port Pitting-20180710_210457.jpg   Coolant Port Pitting-20180710_211209.jpg   Coolant Port Pitting-20180710_210720.jpg  
Reply With Quote
  #2  
Old 07-11-2018, 09:25 AM
Senior Member
 
Join Date: Mar 2015
Location: waterford, mich.
Posts: 707
Rusty Nuts is on a distinguished road
Default

If the pics shown are the worst ones then that's not too bad. When I'm concerned about something not sealing correctly I use aviation gasket sealant. Then say a short prayer for whoever has to take it apart someday in case it's me. That stuff keeps planes in the air.
Reply With Quote
  #3  
Old 07-11-2018, 06:17 PM
blazen_red_4x4's Avatar
Senior Member
 
Join Date: Apr 2014
Location: Lake City, Florida
Posts: 956
blazen_red_4x4 is on a distinguished road
Default

I've seen many just put a thin layer of gasket sealant on the head and intake to mate to the gasket, and it will typically fill up the small crevasses in the pits and seal things up nicely. Never done it before myself, but have heard multiple people swear by the method for putting older worn in engines back together that might not have perfect gasket mating surfaces.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
What to do here? Lower intake pitting. Chevy33 2nd Gen S-series (1995-2005) Tech 6 11-30-2011 02:22 PM
Coolant in spark port Slothmonster 2nd Gen S-series (1995-2005) Tech 1 11-09-2010 07:08 PM
OBD II Port No Power Solution pkrawetz Audio/Video Electronics 10 10-01-2009 10:38 PM
DTC Port -no power justlookin 2nd Gen S-series (1995-2005) Tech 1 05-02-2007 07:26 PM
port and polish djbass_mekanik Headers, Intake, & Exhaust 1 06-10-2006 12:34 AM


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


Advertising
Featured Sponsors
Vendor Directory

All times are GMT -5. The time now is 01:47 AM.


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.