Official Cummins QSM11 Thread

• Mar 7, 2023

• #21

rlynch03

Well-Known Member

GOLD Sponsor

May 16, 2019

1,035

Annapolis, MD

Boat Info

07 52 Sedan Bridge, 2019 Brig Falcon 360HT-30HP Honda, 2003 16' Dauntless

Engines

Cummins QSM 11 660 HP w/ ZF 325-1A

Which impellor are you folks using with the QSM 11? I installed the SMX versions from Seaboard Marine last time.

 

• Mar 17, 2023

• #22

SeaNile

Well-Known Member

Aug 16, 2010

1,522

Chadds Ford, PA

Boat Info

2003 50 Sundancer

Engines

Cummins QSM11

Time to get ready for the season and have a few questions. Do I need my serial numbers for the specific filters, impellers and recommended oil? Looks like Valvoline Purple 15w 40 is most recommended oil? 7.5 gal per engine.

Is there a link or list for the required filters and impeller? While I'm at it what about the Onan generator? Is there a link for the filter and impeller?

 

• Mar 17, 2023

• #23

ttmott

PhD in OCD

GOLD Sponsor

TECHNICAL Contributor

Apr 3, 2012

8,122

Space Coast Florida

Boat Info

2006 52 Sedan Bridge

Engines

Cummins QSM11

SeaNile said:

Time to get ready for the season and have a few questions. Do I need my serial numbers for the specific filters, impellers and recommended oil? Looks like Valvoline Purple 15w 40 is most recommended oil? 7.5 gal per engine.

Is there a link or list for the required filters and impeller? While I'm at it what about the Onan generator? Is there a link for the filter and impeller?

Click to expand...

I use Fleetguard filters for fuel, coolant, and oil. The coolant filter needs to have the correct additive percentage.
Rotella 15W40 oil is what I use for engines, gears, and generator. Tested before every annual change.
The impeller can have two different spline counts - 10 and 14. You need to pull both covers and count before you buy.
Do not attempt to pull the impeller without retaining the phenolic liner - the anti-rotation pin will for sure drop and be forever lost. There is a procedure.
These are for my boat -

 

• Apr 30, 2023

• #24

rlynch03

Well-Known Member

GOLD Sponsor

May 16, 2019

1,035

Annapolis, MD

Boat Info

07 52 Sedan Bridge, 2019 Brig Falcon 360HT-30HP Honda, 2003 16' Dauntless

Engines

Cummins QSM 11 660 HP w/ ZF 325-1A

I notice there is a Fleetguard FS1000 on engine filter and a FS1009. I can’t find the difference.

What is everyone using?

 

• May 1, 2023

• #25

rlynch03

Well-Known Member

GOLD Sponsor

May 16, 2019

1,035

Annapolis, MD

Boat Info

07 52 Sedan Bridge, 2019 Brig Falcon 360HT-30HP Honda, 2003 16' Dauntless

Engines

Cummins QSM 11 660 HP w/ ZF 325-1A

We are having some leaking exhaust leaking around the turbo. Wasn’t exactly sure if it was a crack or exhaust to turbo gasket.

We pulled it apart today and felt confident it was warped mating surface between the turbo and exhaust. Planned to have it shaved down and reinstalled.

Mechanic just called, he cleaned it up at his shop and said he now sees a crack.

See third picture.

I can’t say that is a crack but more like how it was manufactured.?. I always hate this doubt but wanted another opinion…

 

• May 1, 2023

• #26

ttmott

PhD in OCD

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TECHNICAL Contributor

Apr 3, 2012

8,122

Space Coast Florida

Boat Info

2006 52 Sedan Bridge

Engines

Cummins QSM11

Looks more like a casting line that didn't get machined out.
I'd clean it up and Magnaflux it. Any auto machine shop can do the Magnaflux. If it checks out ok then chuck it into a mill and get that surface true.

 

• May 2, 2023

• #27

rlynch03

Well-Known Member

GOLD Sponsor

May 16, 2019

1,035

Annapolis, MD

Boat Info

07 52 Sedan Bridge, 2019 Brig Falcon 360HT-30HP Honda, 2003 16' Dauntless

Engines

Cummins QSM 11 660 HP w/ ZF 325-1A

So I went to the mechanic's shop to get a closer look. They were adamant that the turbo needed to be replaced. See attached, I agree now there is a crack so we ordered a new one... $4500 in parts ughh...

 

• May 4, 2023

• #28

rlynch03

Well-Known Member

GOLD Sponsor

May 16, 2019

1,035

Annapolis, MD

Boat Info

07 52 Sedan Bridge, 2019 Brig Falcon 360HT-30HP Honda, 2003 16' Dauntless

Engines

Cummins QSM 11 660 HP w/ ZF 325-1A

Mechanic found a Reman Turbo that saves a few bucks. Same 90day warranty…

Ordered two replacement turbo blankets to get rid of the aluminum shields. Apparently Cummins buys these same ones for their new motors. Seaboard sells them for quite a bit more than direct by the way…

ATPWRAP.com

(2) 921CU2961 Turbocharger Cover $319.00 each

 

• May 4, 2023

• #29

SeaNile

Well-Known Member

Aug 16, 2010

1,522

Chadds Ford, PA

Boat Info

2003 50 Sundancer

Engines

Cummins QSM11

My QSM11s do not have the heat shield blanket on them. Also noticed they have the original style air filters on them with the metal mesh on the inside which i hear is a no-no. Debating if I should buy new style filters and the blankets.

 

• May 4, 2023

• #30

ttmott

PhD in OCD

GOLD Sponsor

TECHNICAL Contributor

Apr 3, 2012

8,122

Space Coast Florida

Boat Info

2006 52 Sedan Bridge

Engines

Cummins QSM11

SeaNile said:

My QSM11s do not have the heat shield blanket on them. Also noticed they have the original style air filters on them with the metal mesh on the inside which i hear is a no-no. Debating if I should buy new style filters and the blankets.

Click to expand...

I replaced with Seaboard blanket and air filters. Happy with it all. Also had DiAngelo make new risers.

 

• May 4, 2023

• #31

Jeremygavin

Well-Known Member

Mar 6, 2012

2,054

Cape Cod, MA

Boat Info

2011 520 Sedan Bridge
2016 Sea Ray 19 SPX OB
2019 Walker Bay Generation 340

Engines

Cummins QSM11s
Mercury 150 Fourstroke
Honda 40hp

ttmott said:

I replaced with Seaboard blanket and air filters. Happy with it all. Also had DiAngelo make new risers.
View attachment 143849

Click to expand...

I replaced my blankets and air filters with Seaboard version as well. Both are holding up well.

 

• May 12, 2023

• #32

rlynch03

Well-Known Member

GOLD Sponsor

May 16, 2019

1,035

Annapolis, MD

Boat Info

07 52 Sedan Bridge, 2019 Brig Falcon 360HT-30HP Honda, 2003 16' Dauntless

Engines

Cummins QSM 11 660 HP w/ ZF 325-1A

Out with the old and busted, in with a new starboard turbo and blankets… turbo blankets are so much better!

New Turbo…

Man I miss having my son around…

 

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• May 15, 2023

• #33

ttmott

PhD in OCD

GOLD Sponsor

TECHNICAL Contributor

Apr 3, 2012

8,122

Space Coast Florida

Boat Info

2006 52 Sedan Bridge

Engines

Cummins QSM11

rlynch03 said:

Out with the old and busted, in with a new starboard turbo and blankets… turbo blankets are so much better!

View attachment 144337

New Turbo…

View attachment 144336
View attachment 144333
View attachment 144334

Man I miss having my son around…

View attachment 144335

Click to expand...

It's absolutely essential the riser gets installed on the turbo using this jointing compound. Pricey but no other choice. I know you used it because we discussed before but for others -

 

• Sep 18, 2023

• #34

SeaNile

Well-Known Member

Aug 16, 2010

1,522

Chadds Ford, PA

Boat Info

2003 50 Sundancer

Engines

Cummins QSM11

Estimate for after cooler removal and cleaning, adjust valves and replace belt? Thinking I might have this stuff done in the off season.

 

• Mar 18, 2024

• #35

rlynch03

Well-Known Member

GOLD Sponsor

May 16, 2019

1,035

Annapolis, MD

Boat Info

07 52 Sedan Bridge, 2019 Brig Falcon 360HT-30HP Honda, 2003 16' Dauntless

Engines

Cummins QSM 11 660 HP w/ ZF 325-1A

QSM 11 owners - Do you do a Treatment Backflush your engines and coolers every couple years?

 

• Mar 19, 2024

• #36

ttmott

PhD in OCD

GOLD Sponsor

TECHNICAL Contributor

Apr 3, 2012

8,122

Space Coast Florida

Boat Info

2006 52 Sedan Bridge

Engines

Cummins QSM11

rlynch03 said:

QSM 11 owners - Do you do a Treatment Backflush your engines and coolers every couple years?

Click to expand...

I do - every spring. Florida....

 

• Mar 19, 2024

• #37

rlynch03

Well-Known Member

GOLD Sponsor

May 16, 2019

1,035

Annapolis, MD

Boat Info

07 52 Sedan Bridge, 2019 Brig Falcon 360HT-30HP Honda, 2003 16' Dauntless

Engines

Cummins QSM 11 660 HP w/ ZF 325-1A

ttmott said:

I do - every spring. Florida....

Click to expand...

Edited: ()

Thanks, was wondering if it (doing a backflush) was a waste and not worth the effort. I haven't done anything since 2019 (when we) pulled the exchangers, coolers, pressure testing, etc. Thanks for any feedback.

 

• Mar 19, 2024

• #38

ttmott

PhD in OCD

GOLD Sponsor

TECHNICAL Contributor

Apr 3, 2012

8,122

Space Coast Florida

Boat Info

2006 52 Sedan Bridge

Engines

Cummins QSM11

rlynch03 said:

Thanks, was wondering if it was a waste and not worth the effort. I haven't done anything since 2019, pulled the exchangers, coolers, pressure testing, etc. Thanks for any feedback.

Click to expand...

Oh, I thought this was in reference to Barnacle bust'n.
Isn't it around every 1000 hours for a teardown?

 

• Mar 19, 2024

• #39

RBB

Well-Known Member

Dec 18, 2019

2,077

Kentucky

Boat Info

2004 480MY
2006 44DB
2019 Sea Doo GTX 155
Pelican Kayak
2004 390 MY Sold

Engines

Cummins QSM11 680Hp
Cummins QSC 500

how often should a fresh water boat intercooler, etc be torn down.

 

• Mar 19, 2024

• #40

techmitch

Well-Known Member

May 1, 2008

8,323

Chesapeake Bay, Middle River/Frog Mortar Creek MD.

Boat Info

1999 270 DA

Engines

Twin 4.3s W/Alpa I Gen II's

RBB said:

how often should a fresh water boat intercooler, etc be torn down.

Click to expand...

Hey man, you gonna show us some pics of that beautiful Beast?