|
|
12-17-2015, 04:57 AM
|
#15
|
Member
Winnebago Owners Club
Join Date: May 2013
Location: Malabar Florida
Posts: 50
|
why does it seem odd ? The pickup truck guys have been turbocharging their 8.1 with some degree of success. and there is room if you install them underneath and plumb forward. Just asked a question. Turbo lag wouldn't be an issue unless you are racing. Engines are just big air compressors the more cool air in the better the efficiency. I have built engines and mechanic for most of my career to include aircraft.
|
|
|
|
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!
|
12-17-2015, 05:07 AM
|
#16
|
Member
Winnebago Owners Club
Join Date: May 2013
Location: Malabar Florida
Posts: 50
|
JohnRR can you post that pic? it didn't come out here
|
|
|
12-17-2015, 05:20 AM
|
#17
|
Community Administrator
Join Date: Aug 2009
Posts: 53,539
|
Quote:
Originally Posted by rtr
JohnRR can you post that pic? it didn't come out here
|
Can you see it now ?
__________________
Cliff,Tallulah and Buddy ( 1999-2012 )
|
|
|
12-17-2015, 05:33 AM
|
#18
|
Community Administrator
Fleetwood Owners Club Workhorse Chassis Owner
Join Date: Sep 2010
Location: Marquette, Michigan "Da UP" & Lehigh Acres Florida
Posts: 21,827
|
Quote:
Originally Posted by rtr
JohnRR can you post that pic? it didn't come out here
|
The URL to copy/paste is
* http://www.irv2.com/attachments/phot...4c04e4332.jpg*
without the asterisks **
I copied it from the link in post 10 above.
__________________
John & Cathy R.
06 Pace Arrow 38L Workhorse W24
|
|
|
12-18-2015, 12:16 PM
|
#19
|
Senior Member
Join Date: Oct 2015
Posts: 676
|
I wouldn't think lag would be a issue, that is as long as the proper turbo's are selected. Shouldn't be to difficult to size a turbo to give max tq from 1,500-4,000 rpm's.
My old Saab had the Swedish version of normalization. Saab claimed 258 ft lb of tq up to 10,000+ feet, they did this by allowing over 20 psi of boost at high elevations or in really hot and humid weather.
|
|
|
12-19-2015, 07:17 PM
|
#20
|
Senior Member
Monaco Owners Club
Join Date: Nov 2013
Posts: 321
|
unless you swap the rods out for forged ones and lower the compression ration of the pistons to 9 or lower, you're liable to throw one right through the crankcase.
|
|
|
12-20-2015, 05:20 PM
|
#21
|
Senior Member
Join Date: Oct 2015
Posts: 676
|
Quote:
Originally Posted by scep
unless you swap the rods out for forged ones and lower the compression ration of the pistons to 9 or lower, you're liable to throw one right through the crankcase.
|
Doesn't that depend on the amount of boost (and also the size of the turbo)?
Running a few psi... 5psi or so even with a really large turbo doubt any new internals are needed. Run 15-30psi then yes, lots of internal engine work
|
|
|
12-21-2015, 10:51 AM
|
#22
|
Member
Vintage RV Owners Club
Join Date: Jul 2012
Posts: 95
|
Quote:
Originally Posted by jsides
Why would anybody want to turbo charge an 8.1 in a motorhome?? There is no room to begin with and it is not cost effective. Seems a little odd.
|
X2,
For the power or fuel saving you might get....Would you live long enough to get a cost recovery based on the average motor home mileage?
|
|
|
12-21-2015, 05:40 PM
|
#23
|
Senior Member
National RV Owners Club Workhorse Chassis Owner
Join Date: May 2000
Location: California Central Coast
Posts: 2,034
|
I don't think cost recovery is a major factor to most of the thread participants
Glenn
__________________
2006 Sea Breeze LX 8341 on a Workhorse W22 Chassis with 22.5 Alcoa Alum wheels,
2011 Chevy Colorado 4X4 with Ready Brake
|
|
|
12-23-2015, 11:47 AM
|
#24
|
Senior Member
Join Date: Sep 2014
Posts: 128
|
The mechanical aspect of turbo charging a gas engined RV would be rather easy, FORD or Chevy. I think the most difficult part would be the engine management and fuel side of the equation. Both applications would certainly need bigger injectors and fuel pumps and ECU tuning.
Turbo sizing would be critical, but staying in the smaller size would aid greatly with Turbo lag. 6-8 PSI on a gas RV engine could ad a considerable amount of HP and torque. And certainly within the design parameters of the engines internal components.
__________________
2006 Fleetwood Discovery 39S
|
|
|
12-23-2015, 02:42 PM
|
#25
|
Senior Member
Join Date: Jul 2014
Posts: 35,413
|
Turbo give you more power thru more fuel. More fuel means more polution. More polution means tighter EPA controls on the rest of the fleet. They can only build so many gas hogs.
|
|
|
12-23-2015, 09:54 PM
|
#26
|
Moderator Emeritus
Damon Owners Club Workhorse Chassis Owner
Join Date: Mar 2012
Location: Lone Star State
Posts: 19,203
|
Quote:
Originally Posted by twinboat
Turbo give you more power thru more fuel. More fuel means more polution. More polution means tighter EPA controls on the rest of the fleet. They can only build so many gas hogs.
|
Actually, Turbos recover power from the exhaust stream and feed that into the intake stream as boost.
This is what makes a turbo set-up better than a supercharger set-up.
Ford's EcoBoost line of engines are using this principle to post impressive numbers for MPG and power while meeting high EPA standards.
I actually called STS about the turbo set-up in these photos (when gas was at $4 a gallon). They suggested that at 5-7lb of boost, about 50HP and 3-5MPG increase was very doable without any mods to the lower end of the Vortec 8.1L. Too bad STS went out of business...but if/when gas prices go up again, maybe Squires will get another call from me.
Squires Turbo Systems - STS Turbo
Safe travels
|
|
|
12-24-2015, 06:10 AM
|
#27
|
Senior Member
Monaco Owners Club
Join Date: Nov 2013
Posts: 321
|
Quote:
Originally Posted by Scarab0088
They suggested that at 5-7lb of boost, about 50HP and 3-5MPG increase was very doable without any mods to the lower end of the Vortec 8.1L.
|
3-5 mpg increase in a vehicle that at best gets 8? Not possible.
|
|
|
12-24-2015, 06:16 AM
|
#28
|
Senior Member
Join Date: Mar 2013
Posts: 492
|
If hey were telling people they would get a 3-5 mpg gain then I know why they went out of business . False advertising.
|
|
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|