Like Tree0Likes

exhaust manifolds

Reply
Old 06-27-2007, 05:23 PM
  #1
Registered
Thread Starter
 
Join Date: Jul 2006
Location: Hooksett, NH
My Boats: 1987 formula 357 sr-1
Posts: 179
Default exhaust manifolds

Is it normal for gill big block manifolds to have water sitting in the bottom of the manifolds after you shut off the motors?
amazing1 is offline  
Reply With Quote
Old 06-27-2007, 07:55 PM
  #2
Ginger or Mary Ann?
Charter Member
Trade Score: (1)
 
US1 Fountain's Avatar
 
Join Date: Oct 2000
Location: Lafayette. IN
Posts: 10,872
Default

As in the water jackets, (yes) or as in the exhaust ports (no)?
US1 Fountain is offline  
Reply With Quote
Old 06-27-2007, 08:10 PM
  #3
Registered
Thread Starter
 
Join Date: Jul 2006
Location: Hooksett, NH
My Boats: 1987 formula 357 sr-1
Posts: 179
Default

the water was in the exhaust ports.
two cylinders to be exact.
so there has to be a water leak somewhere in the manifolds or riser pipes correct?
amazing1 is offline  
Reply With Quote
Old 06-27-2007, 08:25 PM
  #4
Ginger or Mary Ann?
Charter Member
Trade Score: (1)
 
US1 Fountain's Avatar
 
Join Date: Oct 2000
Location: Lafayette. IN
Posts: 10,872
Default

Same manifold? Any water trails? Might do a pressure check.
US1 Fountain is offline  
Reply With Quote
Old 06-27-2007, 08:43 PM
  #5
Registered
Thread Starter
 
Join Date: Jul 2006
Location: Hooksett, NH
My Boats: 1987 formula 357 sr-1
Posts: 179
Default

what is reverb?
amazing1 is offline  
Reply With Quote
Old 06-27-2007, 08:45 PM
  #6
Registered
Thread Starter
 
Join Date: Jul 2006
Location: Hooksett, NH
My Boats: 1987 formula 357 sr-1
Posts: 179
Default

the motors sat for 1 week.
no sign of water trail.
amazing1 is offline  
Reply With Quote
Old 06-28-2007, 12:54 AM
  #7
Who Me?
Platinum Member
 
FeverMike's Avatar
 
Join Date: Jan 2001
Location: Tampa
My Boats: 2006 38TE Fountain
Posts: 6,656
Default

Either there is a crack in the manifold or you are getting water reverting back up ( this is called reversion) usually at idle in the exhaust stream were the exhaust gas meets the water outlet flow. Also make sure you are not idling to low of rpm's.
FeverMike is offline  
Reply With Quote
Old 06-28-2007, 07:33 AM
  #8
Charter Member #927
Charter Member
 
Payton's Avatar
 
Join Date: Jan 2001
Location: IN
My Boats: 1991 34' Super Hawaii
Posts: 4,817
Default

There is suposed to be a thin piece of stainless steel between the manifold and the riser, I can't remember the name of it. It stops condensasion from the inside of the riser from running down into the manifold.
Make sure that has not been removed.
Payton is offline  
Reply With Quote
Old 06-28-2007, 08:16 AM
  #9
Offshoreonly Advertiser
Offshoreonly Advertiser
Trade Score: (2)
 
DiamondPerformance's Avatar
 
Join Date: Oct 2002
Location: De.
Posts: 1,135
Default

Quote:
Originally Posted by Payton View Post
There is suposed to be a thin piece of stainless steel between the manifold and the riser, I can't remember the name of it. It stops condensasion from the inside of the riser from running down into the manifold.
Make sure that has not been removed.
Turbulators are designed to keep any condensation or moisture from entering the manifold during the cool down process.
Attached Images
 
__________________
www.diamondperformanceparts.com
[email protected]
http://www.facebook.com/pages/Diamon...07878772615803
302-521-0123

The Best Parts & Service At The Best Price
DiamondPerformance is offline  
Reply With Quote
Old 06-28-2007, 09:30 AM
  #10
Charter Member #300
Charter Member
 
Shooter's Avatar
 
Join Date: Oct 2000
Location: Palm Harbor, FL
My Boats: '02 Sonic Prowler
Posts: 740
Default

in cooler weather regions...
Shooter is offline  
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
prostockcat
General Q & A
3
06-16-2008 08:33 PM
chaparral 2550sx
General Boating Discussion
9
08-20-2007 02:08 PM
rssteiny
General Q & A
2
03-14-2006 12:54 AM
Andy
General Q & A
8
02-08-2004 05:12 PM
excaliber
General Q & A
4
09-15-2002 01:47 PM



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 On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 03:50 AM.


Copyright 2011 OffShoreOnly. All rights reserved.