[C320-list] Running Engine Hard

[SARA SCHROEDER via C320-list]

Starting a new thread.

@Bob: When I run the engine hard I go to 3200-3500 for about 15-30 minutes. If I'm coming back to the marina and have the distance, I'll run it hard then as well. I promise you I haven't broken anything!

Sara
Wandering Star
2000/#707
Seattle, WA

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Thanks for this Sara! Very insightful. And I’m guilty as charged.

I have a 3GM30 and rarely exceed 2700 (my top cruising speed) for fear of 'breaking something' despite having read that you need to blow the carbon out.

Any input on what RPM's other are revving to and for what time duration to care for this carbon build up?

(Perhaps I should have started a new thread)

Bob

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From: C320-list [mailto:c320-lis...@lists.catalina320.com mailto:c320-lis...@lists.catalina320.com] On Behalf Of SARA SCHROEDER via C320-list
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Totally agree with Jack. I make sure I use my engine and often times do a boat ride just to run it hard. Up here in Seattle, there's a person who is an amazing diesel mechanic and she writes a monthly article for our local sailing magazine 48 North. She recently wrote an article on this subject.

https://48north.com/instructional/maintenance-and-repairs/diesel-deep-dive-run-em-hard/
Sara
Wandering Star
2000/#707
Seattle, WA

[Joe Grande via C320-list]

With my original Yanmar 3GM30 with 1,725 engine hours, I too run hard for controlled periods. Normal runs are 2800 to 3000 RPMs.
I share the Salish Sea with Sara. Whisper is model year 2000, hull #772.

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From: C320-list <c320-lis...@lists.catalina320.com> on behalf of SARA SCHROEDER via C320-list <c320...@lists.catalina320.com>
Sent: Monday, May 26, 2025 10:41:53 AM
To: C320...@catalina320.com <C320...@catalina320.com>
Cc: SARA SCHROEDER <wanderin...@comcast.net>
Subject: [C320-list] Running Engine Hard

https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2F48north.com%2Finstructional%2Fmaintenance-and-repairs%2Fdiesel-deep-dive-run-em-hard%2F&data=05%7C02%7C%7C9cb404540154410dfd8e08dd9c7ca739%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638838781380524910%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=m%2BQ%2FNckQCBsePOSBd%2BNHTG2988LQcCXhF2D1u7Co7O8%3D&reserved=0<https://48north.com/instructional/maintenance-and-repairs/diesel-deep-dive-run-em-hard/>

[Joe Grande via C320-list]

Sara, thanks for the 48° link!

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From: C320-list <c320-lis...@lists.catalina320.com> on behalf of Joe Grande via C320-list <c320...@lists.catalina320.com>
Sent: Monday, May 26, 2025 1:14:49 PM
To: C320...@catalina320.com <C320...@catalina320.com>
Cc: Joe Grande <joe_g...@msn.com>
Subject: Re: [C320-list] Running Engine Hard

With my original Yanmar 3GM30 with 1,725 engine hours, I too run hard for controlled periods. Normal runs are 2800 to 3000 RPMs.
I share the Salish Sea with Sara. Whisper is model year 2000, hull #772.

Sent from my T-Mobile 5G Device

Get Outlook for Android<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Faka.ms%2FAAb9ysg&data=05%7C02%7C%7C7ae50a564d15439266dd08dd9c928310%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638838875270265886%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=LURvNZ1VLKv8MDoLlHEseI1LjUO4TwKnzDUg0XRkTeA%3D&reserved=0<https://aka.ms/AAb9ysg>>

https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2F48north.com%2Finstructional%2Fmaintenance-and-repairs%2Fdiesel-deep-dive-run-em-hard%2F&data=05%7C02%7C%7C7ae50a564d15439266dd08dd9c928310%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638838875270294968%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=bNcMDhSRKg%2Bjs1ikoiJiuk4i0lW0osdeGYN7F9ro01g%3D&reserved=0<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2F48north.com%2Finstructional%2Fmaintenance-and-repairs%2Fdiesel-deep-dive-run-em-hard%2F&data=05%7C02%7C%7C7ae50a564d15439266dd08dd9c928310%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638838875270313015%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=4j8AKUamvJnM77BV2kgluiK4cqUOLV3pi7Ly%2F5kTu78%3D&reserved=0><https://48north.com/instructional/maintenance-and-repairs/diesel-deep-dive-run-em-hard/>