Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > COMMUNITY FORUMS > Vintage RV's
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  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 06-22-2020, 10:04 PM   #1
Join Date: Oct 2016
Posts: 39
Trying to quiet my Onan down

Have a onan gas generator..model nhe..replacing carb on it tomorrow and looking like I am having to remove generator from is mounted to a metal frame that bolts to metal rails that is part of mh structure ..would like to try and fix generator so not so noisy..if I was to find some leather belting or rubber washers to put between the generator mounting tray and the rails would that help with noise or make it worse?
Also seems to be lot of noise coming from the big cooling fan..would there be a way to help reduce noise from it..I notice it blows pretty hard down on ground so would putting something on ground help reduce any noise..Say like a piece of carpet or ?????
hotrodharley is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free! 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 06-23-2020, 05:28 AM   #2
Senior Member
Shadowcatche's Avatar
iRV2 No Limits Club
Join Date: Nov 2010
Posts: 1,320
Do a search using "quieting Onan generator".
Shadowcatche is offline   Reply With Quote
Old 06-23-2020, 10:09 AM   #3
Senior Member
brokenrule's Avatar
Tiffin Owners Club
Join Date: Jun 2016
Posts: 420
we used this under the dog house and it really helped noise and heat:

Perhaps you can use it und the motorhome floor and sidewalls to keep the noise out of the RV?
2013 Tiffin Alegro 32CA
1996 Itasca Suncruiser 29RQ, 7.4, P32
brokenrule is offline   Reply With Quote
Old 06-24-2020, 06:27 AM   #4
Senior Member

Join Date: Feb 2020
Location: NY State
Posts: 1,709
If there's room, I'd use something like this:
1976 Southwind 28', '96 Winnie 34WK,
2006 Tiffin Allegro Bus 40QDP
n2zon is offline   Reply With Quote
Old 06-27-2020, 12:37 AM   #5
Senior Member
Jpony56hd's Avatar
Join Date: Feb 2015
Location: Fulltime on the Road
Posts: 200
At one time I tried to quiet mine down in a 1988 Gulf Stream, I pulled it and checked the lower end , thinking the rod bearings were shot. They were fine so I checked the Valves. Readjusted them to specs and it helped tons. Mine has rubber mounting pads between the gen frame and mh frame. If yours is on an older unit pre 2000, they're only so quiet, not at all like the newer generators. The old units were the driving force behind Quiet Hours.
Richard "PONY", Virginia & the Cats (Benny & Joon) 2003 Monaco Dynasty. Fulltimers since 2005.
Jpony56hd is offline   Reply With Quote
Old 06-30-2020, 09:54 AM   #6
Senior Member
VanDiemen23's Avatar
Join Date: Oct 2010
Posts: 1,459
yeah, what the genset manufactures figured out was that to make them quiet you have to have an integrated solution. the big box around it is part of that, keeping the various pieces of ductwork, etc from vibrating is part of that, as was going to liquid cooled.

Easy solutions are the rubber mounts to the frame, stuff like dynamat on the box and the RV structure around the genny, valve adjustments, and surprisingly, the fuel pump. Interrupter pumps are awful noisy even when isolated. I used to be able to hear my little FACET cube pump over an unmuffled race engine. After one of the mounting ears broke off from metal fatigue I replaced it with one of their new plastic pumps - all the time thinking I was getting a cheaper, less reliable piece of trash, and it's worked longer than any of the metal ones I've had and you can't hear it run at all because the plastic damps the chatter so well.
VanDiemen23 is offline   Reply With Quote
Old 08-18-2020, 08:20 AM   #7
Senior Member
Kenvb's Avatar
Vintage RV Owners Club
Join Date: Jan 2014
Location: Whitecourt.Alberta
Posts: 393
if money if no object. take that old noisy Onan out and put in a Honda.
1979 Dodge 23 ft
Kenvb is offline   Reply With Quote
Old 08-18-2020, 08:45 AM   #8
Senior Member
Join Date: Nov 2009
Posts: 1,152
The owners manual for the Onan in my old '88 MH said you could mount lead sheeting a certain distance below the bottom of the unit to help muffle it. I never did that.
In our current '99 Winnie I used Dynamat under-hood insulation on the walls of the generator compartment. I went to a different generator set-up so don't have a direct comparison but it is real quiet now. I also used the same product under the coach engine cover and it quieted it down alot.
leadman is offline   Reply With Quote

onan, quiet

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Onan 7500 quiet generator too quiet!! won't start ?? ToddnRhonda Class A Motorhome Discussions 24 03-12-2022 08:51 AM
Onan Quiet Diesel shuts down wimberleyman RV Systems & Appliances 12 08-02-2020 03:15 PM
Trying to cool and quiet down a Onan 4000 Wmjp Class C Motorhome Discussions 11 09-11-2019 12:05 AM
Onan 8000 quiet diesel shutting down code 33 fix pub1898 RV Systems & Appliances 1 06-10-2013 01:27 PM
How to quiet down a Furnace? rvcarpenter Winnebago Industries Owner's Forum 7 11-17-2005 11:33 AM

» Featured Campgrounds

Reviews provided by

All times are GMT -6. The time now is 08:06 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.