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Speaking of boost readings, Cat C15

Yahoo Message Number: 74947
Speaking of boost readings, what are people seeing on the Cat C15 515hp/1650lb-ft (2003 Lexa).
I recently had my charge air cooler replaced due to cracks along one side, and max boost readings went from ~18-19psi to ~22-23psi. I was hoping for a little more, but curious what others are seeing.

Jim Walsh
2003 Lexa

Re: Speaking of boost readings, Cat C15

Reply #1 –
Yahoo Message Number: 75111
Hi Jim,

Mine seems to max out at just over 25 psi, according to my Silverleaf.

Mike 03 Lexa.

Re: Speaking of boost readings, Cat C15

Reply #2 –
Yahoo Message Number: 75119
Jim/Mike there is a spec sheet on all the Over-The-Road CAT engines, which would include the normal boost range. Assuming CAT has not removed them from their website you can go there to find what you need.

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Lee (leozbrowski@...) 2007 Country Coach Intrigue 12153
CAT C-13

Re: Speaking of boost readings, Cat C15

Reply #3 –
Yahoo Message Number: 75122
Lee, What is the max boost on yours. I have seen 49 on the Silverleaf. Do you have the link to the web site. I tried just going to Catepillar.com and they just have spec sheets on the engine and torgue.
Also, do you know what the boost pressure indicates when using the exhaust brake. I have seen boost pressure from 0 to 16.5. The steeper the hill the higher the boost pressure.

Mark Surber

07 Intrigue 12162
C 13 Allison
06 Rubicon LJ

Re: Speaking of boost readings, Cat C15

Reply #4 –
Yahoo Message Number: 75124
Mark, I usually top off at 46.5. I'm going on recollection that the mid-40s is normal. I will keep looking.
I recall having a set of engine spec but have not located them yet. I have never thought to look at boost pressure with the exhaust brake on.

Lee
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Lee (leozbrowski@...) 2007 Country Coach Intrigue 12153
CAT C-13
 

Re: Speaking of boost readings, Cat C15

Reply #6 –
Yahoo Message Number: 75144
C-15 Cat owners, Ken here retired Cat service tech! You have one of the newest and best build Cat diesel over the road engines out there! Its a Tiger wanting to catch its pray!!! Having said this Please Inspect all your Exhaust/Turbo/Muffler piping look for black soot leaks! You have a lot of Heat stored in a little house! The C-15 Is a powerpack! Its really tough on large diesel engines forced into a Motorhome with Air over Air cooling Coolants and Fluid's! I know in the Biz the enduser wants lots of power! Protect your self and inspect! Its like having a 2000 hp gas engine in a VW! Be safe and Safe Travels! Ken 99 Allure 30356