Offshoreonly.com - Mercury Racing Unveils 565 Engine with Digital Throttle and Shift

Offshoreonly.com (https://www.offshoreonly.com/forums/)

- General Boating Discussion (https://www.offshoreonly.com/forums/general-boating-discussion-51/)

- - Mercury Racing Unveils 565 Engine with Digital Throttle and Shift (https://www.offshoreonly.com/forums/general-boating-discussion/270786-mercury-racing-unveils-565-engine-digital-throttle-shift.html)

Quote:

Originally Posted by Michael1 (Post 3627084)

Ray, generally I like to keep a low profile regarding my work background. Test engineering is just one of them. You can question my experitise as a marine engine builder - I've never built one!:D I'm sure you guys have a whole host of issues I've never dreamed of.

Some of the engine tests we ran:

* 100 hours between peak torque and peak horsepower. Some tests were extended to 200 hours. Now I believe 200 is the norm. They run some to 400 hours.
* Long term idle tests (sounds easy, but is brutal on some parts, especially the old flat tappet cams).
* Cold start tests to -20F or below.
* Overheating tests, including running engine with no coolant.
* Road tests up to 100,000 miles, and some at high speeds up to 100 mph.
* Octane tests.
* Water ingestion and splash tests (run the car through deep water at high speeds)
* Cooling tests (idle, grade, towing).
* Coolant corrosion tests.
* Fleet tests.
* Salt spray tests.

The testing is very extensive, and is one reason why automobile engines last so long now. I was talking to some Ford engineers last Fall, and was impressed with the testing they did on their Ecoboost engine. They said they did their durability test at full throttle at peak horsepower for I believe 200 hours, which is a lot for a turbo engine. That's brutal! One engine they ran in the Baja 1000 race, put it through some towing tests, and then put it through their normal dyno durability schedule. On their Powerstroke diesel engine, they essentially double the gasoline test schedule.

I forgot to mention that the auto manufacturers do so much engine dyno durability testing that they actually sell the power generated by the testing back to the utility companies.

Michael

Break'in stuff for a living sounds fun . . . . . I'm still at the hobbyist level though :D

Quote:

Originally Posted by glassdave (Post 3627105)

Break'in stuff for a living sounds fun . . . . . I'm still at the hobbyist level though :D

LOL

It's funny. At the time, it seemed very tedious with lots of documentation, and was one of those jobs everyone wanted to move "through" to get to design engineering. In retrospect, though, it was one of the most educational, fun and memorable jobs I've had.

Michael

What are u doing in Cali now Mike?

Quote:

Originally Posted by Wildman_grafix (Post 3627180)

What are u doing in Cali now Mike?

Sometimes I have to pinch myself because it is such a change, but I am doing IT consulting now. I try to keep abreast of what going on in my old field, though, since it's a love of mine.

I take it you are in graphics. What type?

Michael

Quote:

Originally Posted by BONDO10 (Post 3619151)

Instead of all these new motors,how about a Bravo replacement from Merc that can handle a 525,565,600?

They have one... :)

http://www.mercuryracing.com/_media/...xt6ssm_med.png

Quote:

Originally Posted by GLH (Post 3627335)

They have one... :)

http://www.mercuryracing.com/_media/...xt6ssm_med.png

:hijack:

:party-smiley-004:#6 lbs vrs Bravo 1 lbs???Weight?