Reply
 
Thread Tools Display Modes
 
Old 06-03-2010, 04:58 PM   #1
New Member
 
Join Date: May 2010
Posts: 6
re: more power

Hey everyone,

I had a diesel mechanic look at the engine on my 36 passenger Ford Wayne school bus. He said there is definitely a governor and that to get it off the Bosch in-line fuel injector needs to be taken out and recalibrated and that it would cost between one and two thousand bucks. Is there any way to get more power fairly cheaply, without removing the governor?
Any thoughts on this would be much appreciated.... (Oh yeah, the engine is a 7.8 Brazillian)
themissingparts is offline   Reply With Quote
Old 06-03-2010, 05:14 PM   #2
Bus Crazy
 
Steve's Avatar
 
Join Date: Jul 2002
Location: Central Iowa
Posts: 1,838
Send a message via AIM to Steve
Re: re: more power

Take a look at this thread, lapeer posted some new choices for the injector.

viewtopic.php?f=6&t=588
__________________
View my 1972 Ward: Topic from the Build : The Picture Gallery
View my 1986 Blue Bird: Topic from the Build : The Picture Gallery
View my 1960 GMC: Topic from the Build : The Picture Gallery
Steve is offline   Reply With Quote
Old 06-04-2010, 04:32 PM   #3
New Member
 
Join Date: May 2010
Posts: 6
Re: re: more power

Thanks Steve....
themissingparts is offline   Reply With Quote
Old 06-07-2010, 12:49 PM   #4
Bus Nut
 
frank-id's Avatar
 
Join Date: Nov 2003
Location: Twin Falls, Idaho
Posts: 808
more power carefully

Get away from that mechanic. He is not your friend. All diesel engines have a govenor. All diesel engine govenors can be adjusted. Besides adjusting the govenor, there are other methods of gaining power. Adding a turbo adds about a 10% increase in power, an inter or after cooler makes power increase, reprogramming trans gives more get up and go and a higher rear axle ratio makes better speed with less horse power. I'm changing my rear gears for a better top speed at a lower cruising speed. Frank
frank-id is offline   Reply With Quote
Old 06-07-2010, 01:50 PM   #5
Site Team
 
crazycal's Avatar
 
Join Date: Feb 2007
Posts: 4,087
Re: re: more power

Quote:
Get away from that mechanic. He is not your friend.
+1000
__________________
I'm hungry!

You Gotta Let Me Fly
crazycal is offline   Reply With Quote
Old 06-07-2010, 02:30 PM   #6
Hex
Skoolie
 
Hex's Avatar
 
Join Date: Jul 2008
Location: Buffalo, New York
Posts: 190
Year: 1995
Coachwork: Bluebird, Model 3800
Chassis: International
Engine: T444E
Rated Cap: 42
Re: more power carefully

Quote:
Originally Posted by frank-id
I'm changing my rear gears for a better top speed at a lower cruising speed.
How hard/expensive are you finding that? I've got a great hill-climber, but I'd like more over-the road speed, so I've been thinking about swapping out the rear gears.
Hex is offline   Reply With Quote
Old 06-07-2010, 03:34 PM   #7
Bus Nut
 
frank-id's Avatar
 
Join Date: Nov 2003
Location: Twin Falls, Idaho
Posts: 808
Changing rear gears

There are several methods of changing gear ratios. The easy way is to find a truck over/under drive gear box. These are hard to find but a great device for having all the good desirable gears. Find a overdrive unit to bolt to rear of current transmission. Finally, your vehicle is a very new type bus, so the parts needed could be available from a truck salvage place. I do not have any cost information. New gears to change ratio are easily available. Now the big decision will be..... rear gears ratio wanted/needed. Not all roads are steep nor flat. My goal is for more top speed and economy. My choice was 3:55 and currently my bus is 4:10 ratio. Changing the gears does require some mechanical skill. The most important part of the task is setting up gears for preload and gear pattern
in relationship to gears contact. Maybe a truck mechanic can be recruited for the fine adjustments. The gears are heavy and require a floor jack or trans jack to lift. A salvage gear set assembly will merely need some inspection by a mechanic, and probably no adjustments. Be sure to check the gears and lube carefully. If the donor is a wrecked truck, yea!!!!! The results are very rewarding. Maybe some one will need the old assembly. Frank
frank-id is offline   Reply With Quote
Old 06-07-2010, 07:08 PM   #8
Bus Nut
 
M1031's Avatar
 
Join Date: May 2010
Location: Texas
Posts: 471
Year: 1988
Coachwork: Ward
Chassis: Ford B600
Engine: 6.6L Turbo Diesel
Rated Cap: 26
Re: Changing rear gears

Quote:
Originally Posted by frank-id
There are several methods of changing gear ratios. The easy way is to find a truck over/under drive gear box. These are hard to find but a great device for having all the good desirable gears. Find a overdrive unit to bolt to rear of current transmission. Finally, your vehicle is a very new type bus, so the parts needed could be available from a truck salvage place. I do not have any cost information. New gears to change ratio are easily available. Now the big decision will be..... rear gears ratio wanted/needed. Not all roads are steep nor flat. My goal is for more top speed and economy. My choice was 3:55 and currently my bus is 4:10 ratio. Changing the gears does require some mechanical skill. The most important part of the task is setting up gears for preload and gear pattern
in relationship to gears contact. Maybe a truck mechanic can be recruited for the fine adjustments. The gears are heavy and require a floor jack or trans jack to lift. A salvage gear set assembly will merely need some inspection by a mechanic, and probably no adjustments. Be sure to check the gears and lube carefully. If the donor is a wrecked truck, yea!!!!! The results are very rewarding. Maybe some one will need the old assembly. Frank
For my Ford, I'm changing the gears from 4.88s to 3.7somethings by buying them from Arvin Meritor. Here's the link:

http://www.arvinmeritor.com/contact/contact.asp

This isn't cheap either. I have a reliable mechanic that's done this for decades. The total bill will be near $2K. Obviously not for everyone. However, for our needs it works in the long haul (pun intended). The intention is to get Big Max to cruise at 65 mph more or less and keep the fuel economy. I'm not concerned about acceleration, Big Max never had any neck-snapping G-forces in this department to begin with.
__________________
We few, we Band of Brothers. For he who sheds his blood with me shall be my brother.
- William Shakespeare ("King Henry V")
M1031 is offline   Reply With Quote
Reply

Thread Tools
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
DC or AC power? Locutus Electrical, Charging and Solar 3 07-31-2010 08:44 PM
S1600 more power silentbob Everything Else | General Skoolie Discussions 0 06-18-2009 10:27 PM
No power wmah Everything Else | General Skoolie Discussions 2 06-11-2008 04:39 PM
Power. I want more power! crazycal Conversion General Discussions 20 03-05-2007 06:23 PM
ATX PC Power Supply to a 12 Volt Power Source vonslatt Everything Else | General Skoolie Discussions 3 02-15-2006 07:57 PM

» Virginia Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 06:07 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.