Well, I'm off to a jobsite...Enjoy. I'll read the excuses tomorrow.

 

Bill you got cohonas the size of grape fruits for posting the result. Respect man.
No load on the engine would be a recipe for disaster engine old or new or diesel.

 

Number of cylinders doesn't affect the rpm the engine can safely turn. F1 had V10's turning 15K+. The larger an engine is (disp. per cylinder, regardless of number of cylinders), the less likely that it will benefit from revving higher, but that doesn't necessarily mean it couldn't handle it if it could flow enough air otherwise.

 

I have no complaints at all with that test. It appears to have been very thorough, and they have presented a lot of good data. And if I could ever find good dynos of a 3V 6.8 and a 6.4 from the same dyno (at least the same kind of dyno), I could use their results to demonstrate some stuff. By the way, I think their tests showed just how close the two engines are in many situations.

 

I agree and it also shows the v10 is by far the best gas engine. But the test shows the v10 will not outpull a psd.

 

In pickuptrucks.com's Rumble in the Rockies comparison, the Chevy ran at about 3000 rpm, about 600 less than redline, for most of the test. The Ford stayed at about 2600, around 1000 from redline, but then it only managed about 80% of the Chevy's speed.

By the way, both trucks were running at or near the rpm for peak horsepower and well above peak torque. Wonder why that is?

 

Because the torque curve is basically flat after peak, which proves my point. Its not the most horsepower or the most torque, its the combination of the two.

And running at 600 under redline is fine for a diesel. For a v10, the equivalent would be what,4,000? (Using percentage ) that is well under what the gasser guys say is required for them to hang with a psd.

 

The engine has 122,000.
The truck has 207,000

It lost its first engine to a bent valve from something going down the intake, and thats why it was so cheap at 205,000 when I bought it.

The engine that locked never had the oil changed and it pluged the pick-up screen. I cleaned the engine out the best I could, replaced the screen and put it in. This was oil starvation like Art said, the oil pressure dummy gauge went from norm to 0 two seconds before the RPMs dropped from 4K to nothing.
I got out of the gas and clutched it to let it die and try and not tear it up anymore when I saw that.

Real oil pressure gauge would have saved it.
You can hear on the vid when I was gaining speed from 3-4K a tick, I think it was starving then.
I could not hear that in person though.




hahaha, just go ahead.

 

Empty.

I only did it to prove a point.

 

Bill, now all we need is krewat to do the same.

Your opinion change at all?

(I do admire your humbleness and honesty here)

 

All I did was say that Bill's V10 had issues before he ever tried holding 5K RPM.

But you won't hold 3700RPM for 20 minutes neither, and I'm the scaredee-cat

You must have me confused with someone else.

Run your diesel at the rev limiter for 20 minutes. Oh, that's right, you don't HAVE to, so why bother testing that it'll hold together.

Actually, I don't stay on Long Island 100% of the time. I actually DO things that require the power. And the duty-cycle I put my V10 through, a diesel wouldn't live long doing it.

But back to the running-at-the-rev-limiter thing, no problem. If you can get a diesel to run with me doing the same speed, same gear, sure

Because, pages and pages ago, it was all about having the same gearing.

I'll take 12K lbs, run it at 5000K rpm in 2nd, with 3.73 gears. Should be easy to find a 7.3 w/3.73's and a 4R100 tranny, and lock it in the same exact gear. I'll slow down when I can't see the 7.3 in my rear-view mirror, and then speed back up again until I can't again. And so on, and so on. I don't need to hold 5K RPM

Man, you talk about us V10'ers being a moving target.

Diesel is better pulling up hills. No, run your V10 at 5K on flat ground. No, you won't run YOUR diesel at the rev-limiter on flat-ground because you don't HAVE to.... Well, I don't need to rev my V10 to 5K in 2nd gear on flat ground neither.

and on and on and on...

 

A combination of two for what? For a given load, the maximum speed a truck can reach, on level ground or up a slope, will be determined by its peak power--assuming the overall gearing is correct to allow top speed to occur at peak power. On level ground, pretty much any of the engines discussed here have enough power to exceed the speed rating of the tires, though. The gas engine would also have the advantage of being closer to peak power over a wider rpm range, increasing the chances that gearing would be close enough to correct.

A diesel, making more torque and thus more horsepower, lower in the rpm range will be able to get a heavier load moving quicker, and will accelerate faster from 0 to wherever the 1-2 shift is. Kind of like max speed on level ground, though, most of these engines will be able to start just about any safe load they will see.

As far as gas rpm, is 4000 under what they would need to go to? The 2V V10's appear to make peak power around 4000-4200, and I can't see any benefit in going much higher than that. I'm not sure what redline even is for a 3V.

 

No, this engine has an oiling problem. I do not feel any diffrent about the V10s towing ability, or the fact that they can run 5K RPMs.

Want to hear something funny? I just turned it with a breaker bar to free it up. Now this engine starts and runs just the same as before!
There is a new noise, and I killed it after about 5 seconds due to low oil pressure, but it runs.

I'm thinking I can fix this one on the stand a whole lot cheaper than getting anouther. Just have to see when I tear into it what damage this did.

 

Wow, excuses and more excuses. I am at work so I can't address everything. But, I was only saying level ground since you v10 guys are not near any mountain passes that would require 5k for 20 minutes. My point was none of you will run your truck like a mountain pass would require. I would/have run my diesel for an extended period at 2,800, the most I have/would ever need.

Basically, do the test or admit no one would run their v10 fully loaded at max power/rpm up mountain passes. That's all I am trying to say.

 

When this is fixed, I'll do it again.