In case this helps someone else...probably would work for other HE's I'm sure.
My port engine was running a little hotter (pushing 180 degrees) at 3000 RPMs. Starboard was solid at 170 and change. I had already cleaned the SB heat exchanger so decided to do the port.
You can see there are some blocked tubes at the bottom. I had already started working down from the top using 1/8" brass spindles to break through the crust in the tubes and followed up with a wire brush. Works great. I used a shop vac with a detail attachment to suck out the debris as I went along.
New end cap gaskets with aviation gasket seal after scraping the surfaces and was good to go.
After cleaning, temps solid.
https://www.amazon.com/gp/product/B01022ZE2O/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B08CBYP1L3/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
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Quick Tip: Cleaning a Crusader 6.0 Heat Exchanger
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Delorean6855
Topic author
- Scurvy Dog
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- Vessel Info: 2004 Mariner Three Sixty, Crusader 6.0s w/225 hours, Koehler 7_3e genset
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Quick Tip: Cleaning a Crusader 6.0 Heat Exchanger
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KyleR
- CYO Supporter
- Posts: 214
- Joined: July 8th, 2022, 10:50 am
- Vessel Info: MV Verity
2002 Carver 396
Twin Cummins 6BTA 370HP - Location: On the move!
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Re: Quick Tip: Cleaning a Crusader 6.0 Heat Exchanger
Thanks for sharing!
A correct caliber gun cleaning kit also works great for cleaning tubes - and is a lot cheaper!
A correct caliber gun cleaning kit also works great for cleaning tubes - and is a lot cheaper!
MV Verity
2002 Carver 396
Twin Cummins 6BTA 370HP
2002 Carver 396
Twin Cummins 6BTA 370HP
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bud37
- Admiral
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Re: Quick Tip: Cleaning a Crusader 6.0 Heat Exchanger
I have done that and found bits of plastic stuck in there, well worth the effort....good job .... 
The above is strictly my opinion always based on years of doing...remember to support local business , it pays back.
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mjk1040
- Admiral
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Re: Quick Tip: Cleaning a Crusader 6.0 Heat Exchanger
Have any of you tried RydLyme descaling?
Mike
I'd Rather Be Boating!
1989 Sea Ray Seville
1986 Carver Mariner 32'
1990's Thompson 22' Cuddy Cabin
1990's 4Winns 245 Vista Cruiser
1980's Thompson 19' Open Bow
I'd Rather Be Boating!
1989 Sea Ray Seville
1986 Carver Mariner 32'
1990's Thompson 22' Cuddy Cabin
1990's 4Winns 245 Vista Cruiser
1980's Thompson 19' Open Bow
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