Go Back  Offshoreonly.com > Technical > General Q & A
exhaust valves >

exhaust valves

Notices

exhaust valves

Old 01-06-2005, 03:24 PM
  #1  
Registered
Thread Starter
 
Join Date: Oct 2003
Posts: 32
Likes: 0
Received 0 Likes on 0 Posts
Default exhaust valves

Has anyone ever used Manley Severe Duty exhaust valves? Are they OK to use or should I replace them?

application will be a whippled 540.

thanks
thegreygoose is offline  
Old 01-06-2005, 03:44 PM
  #2  
JC Performance Engines
Gold Member
 
Stormrider's Avatar
 
Join Date: Jul 2002
Location: Long Island, NY
Posts: 8,890
Received 20 Likes on 17 Posts
Default Re: exhaust valves

probably ok for intake...
use inconel for exhaust.
Stormrider is offline  
Old 01-06-2005, 03:45 PM
  #3  
mjb
Registered
 
Join Date: Aug 2004
Location: Fairhaven, MD.
Posts: 261
Likes: 0
Received 0 Likes on 0 Posts
Default Re: exhaust valves

I have seen so many exhaust valves cause major engine problems due to moisture and heat in marine applications. The severe duty may be ok for a car but I would use the EXTREME duty inconel in any HP marine application. The little extra cost more than outways the cost if just one valve siezes up. Bronze guides are also good insurance.
Just my two cents.
mjb is offline  
Old 01-06-2005, 07:08 PM
  #4  
Registered
 
blue thunder's Avatar
 
Join Date: Nov 2001
Location: Pennsylvania
Posts: 3,385
Likes: 0
Received 0 Likes on 0 Posts
Default Re: exhaust valves

We were just talking about this a couple pages ago. Maybe you will find some inteesting reading in this link. Concensus says ferrea is the ticket on exhaust valves due to cost.


http://www.offshoreonly.com/forums/s...47#post1171447


BT
blue thunder is offline  
Old 01-07-2005, 10:46 AM
  #5  
Registered
 
Join Date: Jan 2004
Location: San Diego, California
Posts: 2,777
Likes: 0
Received 6 Likes on 6 Posts
Wink Re: exhaust valves

Always use a quality Inconel exhaust valve (Manley extreme duty) in a supercharged or turbocharged application- period!!
Ray @ Raylar
Raylar is offline  
Old 01-07-2005, 11:37 AM
  #6  
Registered
 
formula31's Avatar
 
Join Date: Mar 2001
Location: ohio
Posts: 2,558
Likes: 0
Received 0 Likes on 0 Posts
Default Re: exhaust valves

And, make sure the heads you are using have hardened exhaust valves seats or those inconel valves will pound them to death.
formula31 is offline  
Old 01-07-2005, 08:14 PM
  #7  
Registered
 
H2Xmark's Avatar
 
Join Date: Apr 2001
Location: beaumont tx
Posts: 1,703
Likes: 0
Received 0 Likes on 0 Posts
Default Re: exhaust valves

the manley severe duty valve will work on the intake but for the exhaust you need the extreme duty version
H2Xmark is offline  
Old 01-30-2005, 07:36 AM
  #8  
JLS
Registered
 
Join Date: Apr 2003
Location: Wisconsin
Posts: 106
Likes: 0
Received 0 Likes on 0 Posts
Default Re: exhaust valves

i was told that my valves were manley sever duty valves--they do say manley on them but how do i tell for sure??
they say Manley E-W on exhaust and Manley G-X on intake??

thanks
JLS is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ls1nova
General Q & A
15
02-11-2009 04:43 PM
Inspector
General Q & A
5
04-23-2008 01:13 PM
sam2
General Q & A
15
01-23-2008 11:42 PM
phughes69
General Q & A
9
12-10-2005 12:32 PM
jcolby
General Q & A
9
10-21-2005 09:08 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


Quick Reply: exhaust valves


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.