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 > Diesel vs gas......................

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spud57

Stratford PE

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Posted: 11/16/12 05:10am Link  |  Quote  |  Print  |  Notify Moderator

jevanb wrote:

spud57 wrote:

64thunderbolt wrote:

I will still extend my invitation for anyone with a gasser & similar wgt trailer to come tow with me in the mtns in Az. When finished we can compare towing speed/rpm and fuel milage. The gasser will fail in all catagories.


For it to be fair it has to be stock vs. stock. My stock 6.8 gasser 362hp/457tq and your stock 7.3 diesel 235hp/500tq. Yep, you'll burn a bit less fuel but I'd be curious who'd be at the top first. RPM comparing is irrelevant. Let both engines do what they were designed to do without all the "aftermarket" add-ons.

I'm not suggesting that I would beat the 7.3 stock because I don't know. [emoticon]
I can go to stock tune and I have 360/650 bet i can get their faster


[emoticon] Agree but as you can see, my response was to the challenge from 64thunderbolt with a '99 7.3.


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Bruce H.

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Posted: 11/20/12 11:04am Link  |  Quote  |  Print  |  Notify Moderator

I'm thinking about upgrading my tow vehicle from a 2006 Honda Pilot to something more robust, such as the forthcoming Grand Cherokee diesel or the Explorer Sport V-6 Ecoboost. I don't like real high rpm's--I always worry that the engine will have a catastrophic failure. I ran the HP formula to see what HP each of these SUV's would have at peak torque rpm, which seems to me to be a sustainable rpm without harming an engine:

2006 Honda Pilot: 240T@4500, HP = 206
Grand Cherokee Diesel (Australia): 406T@2800, HP = 216
Explorer Sport Ecoboost: 350T@3500, HP = 233

At these sustainable rpm's, the Ecoboost is the HP winner! I am having to rethink my goal of getting the GC diesel.

Bruce H.

* This post was edited 11/21/12 08:17am by Bruce H. *

64thunderbolt

Az

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Posted: 12/20/12 11:29pm Link  |  Quote  |  Print  |  Notify Moderator

spud57 wrote:

jevanb wrote:

spud57 wrote:

64thunderbolt wrote:

I will still extend my invitation for anyone with a gasser & similar wgt trailer to come tow with me in the mtns in Az. When finished we can compare towing speed/rpm and fuel milage. The gasser will fail in all catagories.


For it to be fair it has to be stock vs. stock. My stock 6.8 gasser 362hp/457tq and your stock 7.3 diesel 235hp/500tq. Yep, you'll burn a bit less fuel but I'd be curious who'd be at the top first. RPM comparing is irrelevant. Let both engines do what they were designed to do without all the "aftermarket" add-ons.

I'm not suggesting that I would beat the 7.3 stock because I don't know. [emoticon]
I can go to stock tune and I have 360/650 bet i can get their faster


[emoticon] Agree but as you can see, my response was to the challenge from 64thunderbolt with a '99 7.3.


I'll leave it stock.


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davisenvy

Franklin, NC

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Posted: 01/05/13 06:07pm Link  |  Quote  |  Print  |  Notify Moderator

spud57 wrote:

64thunderbolt wrote:

I will still extend my invitation for anyone with a gasser & similar wgt trailer to come tow with me in the mtns in Az. When finished we can compare towing speed/rpm and fuel milage. The gasser will fail in all catagories.


For it to be fair it has to be stock vs. stock. My stock 6.8 gasser 362hp/457tq and your stock 7.3 diesel 235hp/500tq. Yep, you'll burn a bit less fuel but I'd be curious who'd be at the top first. RPM comparing is irrelevant. Let both engines do what they were designed to do without all the "aftermarket" add-ons.

I'm not suggesting that I would beat the 7.3 stock because I don't know. [emoticon]


"For it to be fair" compare apples to apples. Your truck is 9 years newer. Compare the 1999 Triton V10 with 275hp/410tq vs. the Powerstroke 235hp/500tq. Or in 2008 V10 362/457 vs the diesel 350/650. Either way, you lose the race....stock vs. stock.

With your argument I should be challenging a 1998 V10 275/410 vs my Duramax LBZ 350/650. So to prove your point you should be running against jevanb.....or me if you like. A run without "add ons" and one with. You can bring your add ons too.[emoticon]


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rhagfo

Portland, OR

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Posted: 01/05/13 08:41pm Link  |  Quote  |  Print  |  Notify Moderator

davisenvy wrote:

spud57 wrote:

64thunderbolt wrote:

I will still extend my invitation for anyone with a gasser & similar wgt trailer to come tow with me in the mtns in Az. When finished we can compare towing speed/rpm and fuel milage. The gasser will fail in all catagories.


For it to be fair it has to be stock vs. stock. My stock 6.8 gasser 362hp/457tq and your stock 7.3 diesel 235hp/500tq. Yep, you'll burn a bit less fuel but I'd be curious who'd be at the top first. RPM comparing is irrelevant. Let both engines do what they were designed to do without all the "aftermarket" add-ons.

I'm not suggesting that I would beat the 7.3 stock because I don't know. [emoticon]


"For it to be fair" compare apples to apples. Your truck is 9 years newer. Compare the 1999 Triton V10 with 275hp/410tq vs. the Powerstroke 235hp/500tq. Or in 2008 V10 362/457 vs the diesel 350/650. Either way, you lose the race....stock vs. stock.

With your argument I should be challenging a 1998 V10 275/410 vs my Duramax LBZ 350/650. So to prove your point you should be running against jevanb.....or me if you like. A run without "add ons" and one with. You can bring your add ons too.[emoticon]


Dang you two, just accept that year for year a Diesel will out tow a gasser!

I would put each of the big threes, diesels up against their gas engines, no match!

I pull a 11K fiver up 7% grades, and can accelerate to the 55 mph speed limit while doing so, only addition to my 01, is a simple Power Puck 50 hp and about 150 ft. lb. of torque, running 3.55 gears.

If it was gas with those gears it would be doing 35 mph at the top of the hill! I hate to think what it would do with 4.10's!!!


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Sport45

Not far enough from Houston, TX

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Posted: 01/05/13 09:58pm Link  |  Quote  |  Print  |  Notify Moderator

Quote:

If it was gas with those gears it would be doing 35 mph at the top of the hill! I hate to think what it would do with 4.10's!!!


You're right, 3.55's will kill the gas engine. It would do better with 4.10's and better still with 4.30's.

Why do you hate to think what it would do with better gearing?

The engine with higher horsepower will always win the race to the top of the hill. But you have to let it run at the rpm where it develops that horsepower.


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rhagfo

Portland, OR

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Posted: 01/05/13 10:44pm Link  |  Quote  |  Print  |  Notify Moderator

Sport45 wrote:

Quote:

If it was gas with those gears it would be doing 35 mph at the top of the hill! I hate to think what it would do with 4.10's!!!


You're right, 3.55's will kill the gas engine. It would do better with 4.10's and better still with 4.30's.

Why do you hate to think what it would do with better gearing?

The engine with higher horsepower will always win the race to the top of the hill. But you have to let it run at the rpm where it develops that horsepower.

I was referring to 4.10's in my Cummins! It would really eat hills!

brholt

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Posted: 01/09/13 07:03pm Link  |  Quote  |  Print  |  Notify Moderator

rhagfo wrote:

davisenvy wrote:

spud57 wrote:

64thunderbolt wrote:

I will still extend my invitation for anyone with a gasser & similar wgt trailer to come tow with me in the mtns in Az. When finished we can compare towing speed/rpm and fuel milage. The gasser will fail in all catagories.


For it to be fair it has to be stock vs. stock. My stock 6.8 gasser 362hp/457tq and your stock 7.3 diesel 235hp/500tq. Yep, you'll burn a bit less fuel but I'd be curious who'd be at the top first. RPM comparing is irrelevant. Let both engines do what they were designed to do without all the "aftermarket" add-ons.

I'm not suggesting that I would beat the 7.3 stock because I don't know. [emoticon]


"For it to be fair" compare apples to apples. Your truck is 9 years newer. Compare the 1999 Triton V10 with 275hp/410tq vs. the Powerstroke 235hp/500tq. Or in 2008 V10 362/457 vs the diesel 350/650. Either way, you lose the race....stock vs. stock.

With your argument I should be challenging a 1998 V10 275/410 vs my Duramax LBZ 350/650. So to prove your point you should be running against jevanb.....or me if you like. A run without "add ons" and one with. You can bring your add ons too.[emoticon]


Dang you two, just accept that year for year a Diesel will out tow a gasser!

I would put each of the big threes, diesels up against their gas engines, no match!


Well, pickuptruck.com did that in their 2010 shootout. On the 16% hill climb pulling a 10,000 lb trailer the times to the top were:

25.6 Chevy diesel (32 mph @ top)
26.74 Ford diesel (@ 31.1 mph)

30.75 Ford gas (@29.5 mph)
30.95 Ram Diesel (@24.2 mph)

35.6 Chevy Gas (@24.9 mph)
36.4 Ram Gas (@22.1 mph)

So one gas beat a diesel up the hill and two gas engines were going faster then one of the diesels. Off course it is going to depend on axel ratio's etc. but modern gas engines can be pretty competent.

bkirkpatrick

Brea / Orange County, CA

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Posted: 01/09/13 09:13pm Link  |  Quote  |  Print  |  Notify Moderator

Can't we just all get along and agree that the 7.3 was the best diesel ever made (not the tranny that went with it).


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45Ricochet

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Posted: 01/10/13 10:03am Link  |  Quote  |  Print  |  Notify Moderator

bkirkpatrick wrote:

Can't we just all get along and agree that the 7.3 was one of the best diesel ever made (not the tranny that went with it).

Corrected that for you [emoticon]


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