Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Newmar Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 03-12-2013, 07:12 AM   #1
Senior Member
 
Join Date: Aug 2011
Posts: 235
Exhaust Leak?

I have a 1997 Dutch Star with a 454 chevy engine with 35k miles.
Just had the tranny replaced and the mechanic noted that the right side exhaust manifold was leaking.
After talking to some friends it seems this was a big problem on the older 454's. Some say you can get the head resurfaced and some say it is a waste on money because it will happen again.
I never noticed it but I am a little hard of hearing.
Is there a way to fix this?

Thanks
Rich
__________________

__________________
Rich 1997 35' Dutch Star
jettyjock is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 03-12-2013, 08:05 AM   #2
Senior Member
 
CampDaven's Avatar


 
Join Date: Jul 2012
Location: Fulltime, USA
Posts: 14,196
Blog Entries: 1
I had 2 gassers. 1 with a 350, other a 454. An 84 and a 96. Had exhaust manifold gaskets replaced on each. Hot days and hard climbs build too much heat for them, and the air flow in the dog house was not designed as well back then. So, normal, me thinks.

Dave
__________________

__________________
Dave and Nola, RVM1
The Journey is Our Destination!

http://davenola.blogspot.com/
CampDaven is offline   Reply With Quote
Old 03-12-2013, 08:28 AM   #3
Senior Member
 
CampDaven's Avatar


 
Join Date: Jul 2012
Location: Fulltime, USA
Posts: 14,196
Blog Entries: 1
FYI, the tranny on my 96 was replaced at about 40K miles. Seems to have been the weak link in those days
__________________
Dave and Nola, RVM1
The Journey is Our Destination!

http://davenola.blogspot.com/
CampDaven is offline   Reply With Quote
Old 03-12-2013, 08:52 AM   #4
Moderator Emeritus
 
RustyJC's Avatar


 
Texas Boomers Club
Join Date: Jul 2000
Location: Cypress, Texas USA
Posts: 8,854
The thermal cycling between extreme heat and ambient temperature conditions leads to dimensional changes in the exhaust manifolds. They either crack or break the exhaust manifold bolts off. The 460 Fords had similar problems as well.

Exhaust headers, because the individual tubes have flexibility to expand and contract, are the normal (but expensive) cure for the manifold leakage/breaking problem.

Rusty
__________________
2016 Ram Longhorn 3500 Dually 4x4 CCLB, 385/900 Cummins, Aisin AS69RC, 4.10
2014.5 DRV Mobile Suites 38RSSA #6972
Come join us on a TEXAS BOOMERS rally!
RustyJC is offline   Reply With Quote
Old 03-12-2013, 11:42 AM   #5
Senior Member
 
calhyatt's Avatar


 
Newmar Owners Club
Freightliner Owners Club
Join Date: Mar 2012
Location: Weston, Fl.
Posts: 914
Quote:
Originally Posted by jettyjock View Post
I have a 1997 Dutch Star with a 454 chevy engine with 35k miles.
Just had the tranny replaced and the mechanic noted that the right side exhaust manifold was leaking.
After talking to some friends it seems this was a big problem on the older 454's. Some say you can get the head resurfaced and some say it is a waste on money because it will happen again.
I never noticed it but I am a little hard of hearing.
Is there a way to fix this?

Thanks
Rich
Not enought information on your problem yet. Is the manifold leaking because of a crack in the manifold ? Is it leaking between the manifold and heads? Either will make noise. Both required the removal of the exhaust manifold to properly repair. If it is a gasket, you can replace it, if the manifold is cracked, you can get a new/Used one and replace it. New manifold gasket required in both cases. If the exhaust manifold is cast iron, you cannot really weld it and expect it to hold up. Let me know where you think the leak is coming from.
__________________
2003 Newmar Kountry Star 3905, Freightliner XC chassis with CAT 330. Winnie the black lab, pretty Airbus captain wife, retired airline pilot with 11 grandkids. UH-1 pilot (Huey) U.S. Army 1967-1983. RVN 68-69. Northern Idaho my summer home.
calhyatt is offline   Reply With Quote
Old 03-12-2013, 07:26 PM   #6
Senior Member
 
Mitchyb's Avatar
 
Join Date: Mar 2013
Posts: 323
I am planning on ceramic coating mine on my 460 when they go, the coating helps dissipate the heat faster
__________________
Mitchyb is offline   Reply With Quote
Old 03-12-2013, 09:39 PM   #7
Senior Member
 
Rotten-Red's Avatar
 
Join Date: Jan 2012
Location: Benton Harbor, Michigan
Posts: 539
I had an 85' with a 454. Those stock manifolds were famous for warping. Mine warped and broke one bolt. I had it machined back flat and replaced the bolt. In short time it had warped again and was leaking. Your wasting your time and money trying to do anything with the stock manifolds. I replaced mine with "Ring Manifolds". That's the brand name of a manifold that a company in Michigan was manufacturing back then as a replacement for the 454 because of the problems of warping. They were cast iron like the stock manifolds but were made in 2 pieces with a slip joint in the middle. So 2 cylinders feed into each piece. The slip joint allowed for expansion and contraction and done away with the warping. Unfortunately they are no longer in business.

I think your best option today is to go with a complete "Banks" Exhaust system. They use headers instead of cast iron manifolds. No more warping and leaking problems. Plus they claim better performance.
__________________

__________________
Rotten-Red is offline   Reply With Quote
Reply

Tags
leak



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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


» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 02:21 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.