Good Sam Club Open Roads Forum: Class A Motorhomes: Ford V10
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tropical36

Southwest Florida_USA

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Posted: 07/14/20 03:10pm Link  |  Quote  |  Print  |  Notify Moderator

carringb wrote:

camperdave wrote:

I know everyone says the V10 likes to rev, but man I just personally can't let myself keep her above 4k rpms for any extended time, it's just so.. well.. revvy I guess.


If it makes you feel any better, I regularly hang out near 5,000 RPM, sometimes for 15-20 min at a time. When pulling heavy loads over the mountains, I just lock in low gear (2nd on mine, which is equivalent to 3rd on the 5R110) and let it hang out there. Then when I need to ease up for tight curves or slow traffic, i immediately catch right back up where I was (usually 58-62 MPH). My combined weight is 22-25,000 pounds. I replaced the first motor at 458,000 miles because of a warped a valve seat letting it run lean after the fuel filter plugged (my tune contributed, but my tuner took a bath that same weekend so I couldn't go back to stock). I also had the Banks PowerPack on since around 120,000 miles. All other cylinders still had in-spec compression, and the cross-hashing was clearly visible when I scoped it! And my 4R100 is still original with 483,000 miles!

It absolutely amazes me, when I try to imagine in my mind the flutter of moving parts going on inside one of these engines.
And not for an hour or two, but day after day and year after year.
A big Diesel at 1500 - 2100 rpm's maybe, but for 4 - 5K, it's mind boggling.


"We are often so caught up in our destination that we forget to appreciate the journey."

07 Revolution LE 40E_Spartan MM_06 400HP C9 CAT_Allison 3000.

Dinghy_2010 Jeep Wrangler JKU ISLANDER.

1998 36ft. National Tropi-Cal Chevy Model 6350 (Sold)


Bruce Brown

Northern NY

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Posted: 07/14/20 03:39pm Link  |  Quote  |  Print  |  Notify Moderator

If my math is right, and I certainly could have missed something, the pistons in that 458,000 mile V10 have been up and down a bunch.

Lets assume a 35 MPH average speed @ 3,000 RPM. (Your overall average speed is a lot lower than you'd think)

458,000 miles รท 35 MPH = 13,085 hours of run time.

13,085 hours x 60 minutes in an hour = 785,100 minutes of run time.

785,100 minutes @ 3,000 Revs per minute = 2,355,300,000 times those pistons have gone up and down.

That's impressive.


There are 24 hours in every day - it all depends on how you choose to use them.
Bruce & Jill Brown
2008 Kountry Star Pusher 3910


wildmanbaker

Kennewick, Washington

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Posted: 07/17/20 04:45pm Link  |  Quote  |  Print  |  Notify Moderator

Bruce, the main point is the pistons are accelerating from 0 to 100 mph 84 times every second, at 5,000 rpm, and stopping, reversing direction, and acceleration to 100 mph again. This taking the stroke of the V10 in to account. At 3,000 rpm, this happens 50 times a second, but at a slightly slower speed. Your post points out staggering points, along with my post, its a wonder a engine lives at all.


Wildmanbaker


Bruce Brown

Northern NY

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Posted: 07/17/20 06:54pm Link  |  Quote  |  Print  |  Notify Moderator

^^^ Exactly. Its a wonder they live at all. When you think about the numbers its an engineering marvel.

tropical36

Southwest Florida_USA

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Posted: 07/17/20 07:36pm Link  |  Quote  |  Print  |  Notify Moderator

Bruce Brown wrote:

^^^ Exactly. Its a wonder they live at all. When you think about the numbers its an engineering marvel.

No nothing of their reputation for longivity, but....
The Aston Martin Valkyrie has the highest redline of a piston-engine road car rated at 11,100 rpm. The Renesis in the Mazda RX-8 has the highest redline of a production rotary-engine road car rated at 9000 rpm.

haste maker

alabama

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Posted: 08/03/20 04:38pm Link  |  Quote  |  Print  |  Notify Moderator

Just completed a trip to the north Ga hills & this time I let the engine work on the hills between 4000 to 4500 RPM's & it pulled much better, plus I got better MPG than I would have thought in the past.


Retried Teamster
2007 Allergo

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