Go Back  Offshoreonly.com > Owners Forum > Formula
Is it time for exhaust >

Is it time for exhaust

Notices
Formula

Is it time for exhaust

Old 02-12-2012, 06:48 PM
  #1  
Registered
Thread Starter
 
Join Date: Sep 2008
Location: Halifax, Nova Scotia
Posts: 305
Likes: 0
Received 10 Likes on 3 Posts
Default Is it time for exhaust

My 1995 502 in the 271 has about 650 hours and appears to have the origional exhaust.

Having lost a 454 in another boat due to water from a rotten manifold, I don't want a repeat.

I beleive the elbow is stainless but am not sure about the risers and manifolds.

Any recommendations, the oe Merc stuff is a
reasonable price.
It's an old boat and not exactly a hot rod, so I don't see
much sense in spending a buch of loot to gain a few mph.

Any ideas

nsformula is offline  
Old 02-12-2012, 06:59 PM
  #2  
Registered
VIP Member
 
Join Date: Jan 2007
Location: Sweet Home, North Alabama and Orange Beach
Posts: 794
Likes: 0
Received 0 Likes on 0 Posts
Default

Past time really. Pull them and check may be able to surface the gasket mating areaand reuse but the water passages are more than likely very restricted.
looseconnection is offline  
Old 02-12-2012, 09:47 PM
  #3  
Registered
 
sleek1's Avatar
 
Join Date: Jan 2006
Location: Phoenix, AZ
Posts: 1,197
Likes: 0
Received 0 Likes on 0 Posts
Default

Tell tale signs (to me) water is leaking past the exhaust gasket. Pull the riser, clean up the surface and replace the gasket.
sleek1 is offline  
Old 02-13-2012, 08:51 AM
  #4  
Registered
 
Join Date: Sep 2011
Posts: 90
Likes: 0
Received 0 Likes on 0 Posts
Default

Change them. You are on borrowed time with those things.
Secret Formula is offline  
Old 02-13-2012, 09:18 AM
  #5  
Registered
 
Join Date: Aug 2004
Location: naples,florida
Posts: 4,096
Received 562 Likes on 231 Posts
Default

Cheap insurance change them. 4 years is about the limit when we ran commercial boats with Mercs in saltwater without flushing.
tommymonza is offline  
Old 02-14-2012, 12:56 PM
  #6  
Registered
 
Join Date: Dec 2011
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Default

the risers are stainless and you'll be able to tell cause they'll say "stainless" on the side of them, otherwise i agree with replacing the manifolds and spacers, your past due and it ain't worth toastin' an engine.
TN Formula is offline  
Old 02-15-2012, 07:20 AM
  #7  
Registered
 
Join Date: Aug 2007
Location: lake norman nc
Posts: 183
Likes: 0
Received 0 Likes on 0 Posts
Default

Water is leaking out! If water leaks in you'll be in the same boat as the 454!
mj2562@bellsouth.net is offline  
Old 02-16-2012, 08:35 PM
  #8  
Gold Member
Gold Member
 
srl520's Avatar
 
Join Date: Feb 2004
Location: Las Vegas Nevada
Posts: 337
Likes: 0
Received 0 Likes on 0 Posts
Default

Just put new motors in mine. Port motor dropped valve seat causing major problems and rebuild. Signs of
water leaking past gasket in to exhaust manifold. Mechanic says the most probable cause of the seat to fail is steam produced caused by the leak. I resurface all the surfaces and replaced all gaskets. I learned the hard way.
srl520 is offline  

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


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.