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 > Gas Vs Diesel Yah-Yah-Yah!

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Ivylog

Blairsville, GA and WPB, FL.

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Posted: 05/17/21 06:53am Link  |  Quote  |  Print  |  Notify Moderator

wowens79 wrote:

The same can be said with tow vehicles, the new gas engines do a great job, and have really closed the gap with diesels. and for about $10k less.

Great job??? 475 torque compared to 1050... you’re dreaming on closing the gap and it’s more the 10 speed tranny than the gas engine.


This post is my opinion (free advice). It is not intended to influence anyone's judgment nor do I advocate anyone do what I propose.
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DrewE

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Posted: 05/17/21 07:47am Link  |  Quote  |  Print  |  Notify Moderator

Ivylog wrote:

wowens79 wrote:

The same can be said with tow vehicles, the new gas engines do a great job, and have really closed the gap with diesels. and for about $10k less.

Great job??? 475 torque compared to 1050... you’re dreaming on closing the gap and it’s more the 10 speed tranny than the gas engine.


Torque...at what engine rpm range? Engine power across its operating range is a far more useful metric for guessing at performance.

(If you put a 2.2:1 gear reduction on the gas engine, the torque numbers would be basically identical.)





valhalla360

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Posted: 05/17/21 09:03am Link  |  Quote  |  Print  |  Notify Moderator

Ivylog wrote:

wowens79 wrote:

The same can be said with tow vehicles, the new gas engines do a great job, and have really closed the gap with diesels. and for about $10k less.

Great job??? 475 torque compared to 1050... you’re dreaming on closing the gap and it’s more the 10 speed tranny than the gas engine.


Gas engines are quite happy to spin up at 3000rpm while the diesel may like 1500rpm.

Adjust the gearing and it's the same torque making it to the wheels.

Diesel still retains an advantage at high altitude...not because it's a diesel but because it has forced induction which makes up for the thin air.


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Mondooker

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Posted: 05/17/21 09:15am Link  |  Quote  |  Print  |  Notify Moderator

As pointed out earlier and mentioned in my initial post. A top of the line tear 4 gas motorhome changes everything. Better furniture, cabinetry, appliances etc. And it also changes the sound deadening material in the doghouse, steering and front end components. Stabilizers, tires and on we go. And if you’ve not driven one with the new V8 and chases it’s a serious game changer!

wowens79

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Posted: 05/17/21 11:43am Link  |  Quote  |  Print  |  Notify Moderator

DrewE wrote:

Ivylog wrote:

wowens79 wrote:

The same can be said with tow vehicles, the new gas engines do a great job, and have really closed the gap with diesels. and for about $10k less.

Great job??? 475 torque compared to 1050... you’re dreaming on closing the gap and it’s more the 10 speed tranny than the gas engine.


Torque...at what engine rpm range? Engine power across its operating range is a far more useful metric for guessing at performance.

(If you put a 2.2:1 gear reduction on the gas engine, the torque numbers would be basically identical.)


No doubt the diesels are torque monsters, but how often do you really actually use that much torque? Yes you can accelerate uphill better, and pulls heavy 5ers, large coaches better. But an average 5er is probably 12-14k loaded. That used to be diesel territory, but now is doable with a gasser. Yes the 10spd is a huge part of the package with the gassers. But they've gone 10spd with the diesels too, and I assume it is to help the performance.


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Ivylog

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Posted: 05/17/21 01:16pm Link  |  Quote  |  Print  |  Notify Moderator

DrewE wrote:

Ivylog wrote:

wowens79 wrote:

. (If you put a 2.2:1 gear reduction on the gas engine, the torque numbers would be basically identical.)

A 2.2 gear reduction would make the engine turn 8800 rpms (briefly) but you would not have 1075 torque. The 7.3 torque curve is above 450 from 3000 to 5500 but it starts to decrease at 5500 rpms.
My V8 diesel will turn 3500+ rpms and my 15 liter DP engine will handle 2200 rpms under load and 2500 no load. The sweet spot is around 1500 which is 65 mph. It will make 1600+ torque from 1000 to 1550 rpms.

* This post was edited 05/17/21 01:28pm by Ivylog *

Yankee Clipper

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Posted: 05/17/21 03:54pm Link  |  Quote  |  Print  |  Notify Moderator

IMHO, the sweet spot is the optimal price, floor plan, and equipment. For both my current and former rig (first Class A), I have been the third owner. Bless all the former owners who worked out the kinks and took the major depreciation! Our current rig has 5-Star tuning, so the V-10 now cranks out 420 HP, which is in the DP range.
The engine noise is not all that bad, if I ever cure the wind whistle everything would be fine and dandy.


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Lantley

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Posted: 05/17/21 04:31pm Link  |  Quote  |  Print  |  Notify Moderator

Mondooker wrote:

As pointed out earlier and mentioned in my initial post. A top of the line tear 4 gas motorhome changes everything. Better furniture, cabinetry, appliances etc. And it also changes the sound deadening material in the doghouse, steering and front end components. Stabilizers, tires and on we go. And if you’ve not driven one with the new V8 and chases it’s a serious game changer!

While I agree the gassers have improved. You are in FL. which is relatively flat.
The diesel vs. gas divide is not as important on flat ground.
But once you hit the mountains the diesel starts to separate itself from the gassers.
Their is no substitute for diesel performance


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Mondooker

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Posted: 05/17/21 04:39pm Link  |  Quote  |  Print  |  Notify Moderator

Hi Lantley, You’re certainly right about flat Florida being much different than mountain areas. But I was in Asheville, NC where it’s quite hilly and in some areas seriously so. The gassers did themselves proud.

I should probably add that I was in the Emblem for a good hour and the Encore for almost two. I say that because it wasn’t just a quick drive by.

* This post was last edited 05/17/21 05:20pm by Mondooker *   View edit history

JaxDad

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Posted: 05/17/21 05:12pm Link  |  Quote  |  Print  |  Notify Moderator

Ivylog wrote:

wowens79 wrote:

The same can be said with tow vehicles, the new gas engines do a great job, and have really closed the gap with diesels. and for about $10k less.

Great job??? 475 torque compared to 1050... you’re dreaming on closing the gap and it’s more the 10 speed tranny than the gas engine.


Things like HP or torque are pretty much meaningless unless you look at the ‘big picture’.

I like sporty roadsters, my favourite is a 6 litre, 621 hp twin turbo V12 Benz, it does 0 to 60 in a little under 4 seconds and the 1/4 mile in a little under 12 seconds.

My buddy likes motorcycles, his favourite bike is 1 litre BMW, it also does 0 to 60 and 1/4 mile times about the same as my car does.

My car weighs about 4,300 pounds, his bike weighs about 700 pounds.

Power to weight ratio, that is a quantitative measurement that means something.

A 36,000 pound DP versus an 18,000 pound gasser is pretty much the same apples to oranges silliness.

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