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

OhhWell wrote:

64thunderbolt wrote:
Sport45, i agree but a gas eng is not built heavy enough to last several hundred thousand miles towing hard under boost. The bottom end won't last.

Another thing people don't realize is the wgt of the rotating mass. The rotating mass in a diesel is much heavier than a gasser. Once @ the needed rpm that wgt will keep it turning where a light wgt gass eng will start falling off. Remember the very old 3 cyl John Deere's? The huge flywheel on the side? That's what gave them the torque needed to do the job.

My 7.3 is arould 17/18 to 1 comp. Put that into a gasser and the bottom end won't last.

Compare it to a Nascar eng. The speedway eng runs about 16 to 1 Lucky to get 500 miles out of a $100K eng. Not going to go half a mil.

Lastly check into the hp per btu difference between gas & #2.

And to ans another comment someone made about boost. I only run about 20/22 psi. I have a small oem turbo & inj and run conversative tunes.

I'm not trying to sway anyone. Just stating the reasons I would never tow heavy in any terrain other than flat with a gasser. I run these mtns every trip in summer for over 15 yrs and started with a gasser. I know the difference.

One more thing to add then I'm outa here.
How could you cool a boosted gasser? I mean intake air? Intercooler. Well, after you make it work you are almost @ the cost of a diesel and are going to only get maybe 30% @ very most life out of it compared to the diesel.

I would imagine.e an intercooler would do nicely. it wouldn't be that big of a concern though because you would only need to run a few psi just to help with high altitude. they already have enough power that they don't need to push 20 psi or so. a lightly boosted modern Gasser that is taken care of should.easily see 200k+ miles.

torque torque torque... torque at the wheels can easily be boosted with gearing. I can personally put out 600lbft of torque with a 3 foot breaker bar but I sure as heck ain't ratcheting a drivetrain up a hill with 15,000 lbs attached to it. at least not very fast.

diesel has longevity and thermal efficiency. The high torque ratings on diesels is real nice for the seat-of-the-pants feeling but has nothing to do with how fast you can pull weight up a hill.