Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
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 07-30-2015, 01:07 PM   #1
Junior Member
 
Join Date: Jul 2015
Location: Woodbury, PA
Posts: 2
92 Bounder NEEDS more power

Hey all, New to Rving (actually only owned it for 24 hrs) but Ive been watching and reading this site for 6 months now. I bought a really well kept 92 Bounder 35J diesel pusher with 5.9l 1st series engine and Allison 4 speed. It looks great but struggles to climb a hill. I am looking into tweaking the fuel pump but really need some quality info on turbo upgrades. I have a guage set I will install next week to watch the EGTs and boost and am very familiar with Diesels. Has anyone upgraded the turbo on these 1st series cummins before and with what?

I see a lot of pickup guys out there love these things but Im not interested in 500hp. I just need an extra 75-80 to push me up the hills. My engine is inter-cooled already. I think with some extra fuel, Im on my way there but the bottleneck after the turbo is ridiculous. Id also like to know if anyone has used an exhaust brake with the 4 speed Alison tranny.

Thanks
__________________

__________________
Toolmanmike 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 07-30-2015, 01:49 PM   #2
Senior Member
 
BFlinn181's Avatar
 
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 16,211


I have a 5.9 12 valve and also looked into the things you mentioned. First, the limiting factor on increasing HP or torque isn't the engine, they can be 'souped' up pretty easy with rather cheap modifications. The limit is, how much can the Allison 4 speed transmission handle? My AT542 would not take much more than my engine can presently put out, so that changed my mind on increasing engine power. Also, if you have a similar transmission to the AT542, it probably has a non-locking torque converter, so any engine braking would not be transferred into the wheels.

I've driven 10% mountain passes out west and found I could do O.K. paying attention to RPM and gear selection. Downshifting to keep the engine in it's best torque range helps on climbing, and downshifting to a lower gear or two actually does help retard speed going down. It's not as positive as an exhaust brake, but it prevents having to ride the brakes or apply so frequently that overheating becomes an issue.
__________________

__________________

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
BFlinn181 is online now   Reply With Quote
Old 07-30-2015, 09:04 PM   #3
Senior Member
 
Wdebarmore's Avatar
 
Monaco Owners Club
Join Date: Mar 2014
Posts: 185
I too have a 190 HP 5.9 with Allison 4 speed. My seems to do alright in the California mountains. I have a higher than normal rear end ratio along with a gear vendors overdrive. This combo makes the engine perform like it has more torque than it actually has. Keeping the RPMs in the proper range is very important.
__________________
1988 34' Executive Industries - Executive Prestige
5.9 Cummins, Allison AT542
Wdebarmore is offline   Reply With Quote
Old 08-01-2015, 10:27 AM   #4
Senior Member
 
slemnah's Avatar
 
Join Date: Jan 2011
Location: Santa Clarita, CA
Posts: 811
Try a Banks Turbo kit. It will give you more power and torque. Banks power.com.


Steve and Jill
2005 Panther
23' Trailer
__________________
slemnah is offline   Reply With Quote
Old 08-01-2015, 10:34 AM   #5
Senior Member
 
BFlinn181's Avatar
 
Gulf Streamers Club
Join Date: Jan 2012
Location: Cincinnati
Posts: 16,211
Quote:
Originally Posted by slemnah View Post
Try a Banks Turbo kit. It will give you more power and torque. Banks power.com.


Steve and Jill
2005 Panther
23' Trailer
Very likely when they ask about the transmission they'll not recommend it. Lots of HP/torque modifications can be done much more cheaply than a Banks kit, throttle plate, injectors, etc., but a new or beefier transmission modification would be a good percentage of the RVs value. Check the specs of the transmission before investigating engine mods. Also learning to shift and keep in engine's RPM torque range can make it seem peppier.
__________________

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
BFlinn181 is online now   Reply With Quote
Old 08-02-2015, 06:21 PM   #6
Senior Member
 
Join Date: Feb 2011
Location: Commerce City, Co
Posts: 136
Needs more power

I have a 96 5.9 230HP . Installed a TST kit developed by a retired Cummins engineer. TSTproducts.com Made a great difference. Kit cost less than $200.
Ron D 96 MNACO Windsor.
__________________
rdelcamp is offline   Reply With Quote
Old 08-03-2015, 06:06 AM   #7
Junior Member
 
Join Date: Jul 2015
Location: Woodbury, PA
Posts: 2
Thanks all. I have been reading your responses and enjoy the information but it took me awhile to get back to my own thread on the site. I am pulling my boat and full camper up a good mountain grade today on our first RV trip! I'm excited to see how it does. I wasn't impressed on the highway when I brought it home last week but will watch the RPMs and gear selection on this trip.
I have been researching turbos and pump mods to get some more horses. I will research the transmission limitations today as well.
What turbo have you all upgraded to from these old 1st series engines? Hx35? S300? Hx40? Banks? I'm trying to find a bolt on upgrade and seems like the newer 96-? Have lots of options but the older models- not so much.

Thanks again
__________________

__________________
Toolmanmike is offline   Reply With Quote
Reply

Tags
bounder, power



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
Switching Power Sources on an 85 Mallard wolf_7669 Vintage RV's 4 10-28-2014 03:16 PM
No power to refer or hot water tank GlenB RV Systems & Appliances 13 07-16-2014 04:38 PM
2003.Discovery help no ignition power Alanboss Class A Motorhome Discussions 3 03-28-2014 07:05 AM
No power to coach unless RV is running dvleemin Class A Motorhome Discussions 9 03-27-2014 08:33 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:05 PM.


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