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5.9 cumins boost
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posted
How much boost should I see in a 5.9 cumins?. I never see much over 5 lbs and I know it should be more. The bus is in the shop for oil and filters and they will look into my boost issue.
Mac
93 Breakaway
 
Posts: 27 | Location: Chardon Ohio | Member Since: 02-16-2014Reply With QuoteReport This Post
Supporting Member of Barthmobile.com 4/08
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At cruise about 10 lbs. At full throttle up to 25. After installing the large injectors I could do 30 easy.


'92 Barth Breakaway - 30'
5.9 Cummins (6B) 300+ HP
2000 Allison
Front entrance
 
Posts: 901 | Location: Minneapolis/Yuma | Member Since: 08-17-2006Reply With QuoteReport This Post
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Thanks gary! I'll relay that to the mechanic.
Mac
 
Posts: 27 | Location: Chardon Ohio | Member Since: 02-16-2014Reply With QuoteReport This Post
Supporting Member of Barthmobile.com 10/08
Picture of MWrench
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The boost numbers I see are similar to Gary's. Cruise on the flats is between 10-15 Lbs. 22 Lbs at max throttle and max RPM before defueling. (2400 RPM)

Mine is stock 230 HP Cummins with a 1 turn adjustment inward on the AFC. Helps low RPM acceleration.


Ed
94 30' Breakaway #3864
30-BS-6B side entry
230 Cummins, Allison 6 speed
Spartan chassis
K9DVC
 
Posts: 1877 | Location: Los Gatos, CA | Member Since: 12-08-2005Reply With QuoteReport This Post
Picture of Fred & Cindy
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You guys actually have a boost gauge on your dash? Mine does not have one and I have no idea how much boost I get. Seems to run alright though. How difficult would it be to put one in?


1990 32' Regency, Wide Body
Spartan Chassis, 8.3 CTA Cummins
4 Speed Allison Trans
South Central Missouri
 
Posts: 361 | Location: Missouri | Member Since: 06-24-2012Reply With QuoteReport This Post
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My boost gauge (manifild pressure) is located is located left of the seat just forward of the leveler controls. Not easy to monitor. The problem was a bad fitting in the line to the gauge, cheap to fix but a bit expensive to find. I saw 15 lbs on the way home and the bus seemed to have a bit more power on the mild hills I encountered on the way home. I don't believe I have had any boost since I've owned the bus. Anxious to see how it performes on the interstate now.
Mac
'93 breakaway
 
Posts: 27 | Location: Chardon Ohio | Member Since: 02-16-2014Reply With QuoteReport This Post
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    Forums    Tech Talk    5.9 cumins boost

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