Forum Discussion
- Amazingly sad...simple math and simple fulcrum principle...or at least to some folks
:SBenK wrote:
HP = torque x RPM / 5252...formula is the same for either gasser ICE and diesel ICE
Increase the torque and nothing else changes will beget more HP
Increase the RPM and nothing else changes will beget more HP
The drive line does not know whether the ICE is a gasser or diesel...the tranny computer also doesn't know...just that the look up tables are different - A lot can be learned by riding a 10 speed bike up a hill and playing with the “gears” your transmission and rear end work the same way as the front and rear gear set on a bike.
valhalla360 wrote:
dodge guy wrote:
valhalla360 wrote:
Learjet wrote:
I'm use to 900 Tq....don't know if I can go back to almost half of that :(
Just drop down a gear or two...the rear axle will never know the difference.
Unless you are pushing the very upper limits of the tow ratings and doing lots of mountain driving...the modern gas engines are overkill (diesel is just more overkill).
Ughhh! It does’t work like that!
Ughhh...actually that's exactly how it works.
Apparently you don't know the inner workings or physics of the inside of a transmission. Just dropping a gear doesn't do anything other than make you spin more rpm and at a lower speed. With still the same output at the rear axle. If you change the rear axle ratio you will effectively change each ratio in the transmission. Not going to get into it here, but that's exactly how it works.Grit dog wrote:
Lol Valhalla. Cmon man. You know better than that, or you've never driven a diesel with 2x or more the torque of the pickup in your sig line.
That 2x more torque only matters if you run out and need more torque while in the lowest gear.
If you are within limits, you won't run out of torque. Heck most people never fully utilize their diesel engine torque anyway. It's just that they like the feeling.- HP = torque x RPM / 5252...formula is the same for either gasser ICE and diesel ICE
Increase the torque and nothing else changes will beget more HP
Increase the RPM and nothing else changes will beget more HP
The drive line does not know whether the ICE is a gasser or diesel...the tranny computer also doesn't know...just that the look up tables are different - Lol Valhalla. Cmon man. You know better than that, or you've never driven a diesel with 2x or more the torque of the pickup in your sig line.
dodge guy wrote:
valhalla360 wrote:
Learjet wrote:
I'm use to 900 Tq....don't know if I can go back to almost half of that :(
Just drop down a gear or two...the rear axle will never know the difference.
Unless you are pushing the very upper limits of the tow ratings and doing lots of mountain driving...the modern gas engines are overkill (diesel is just more overkill).
Ughhh! It does’t work like that!
Ughhh...actually that's exactly how it works.- The approx 25% difference is in the ball park and add higher compression ratio (more PSI before ignition) and of course the fuel with higher BTU’s per unit volume measure
Meaning that gasoline about 18% to 20% LESS BTU’s (less energy} than diesel, per gallon. Plus diesel has less of an issue with pre-ignition (direct injection helps gassers, but that potential issue is still there that diesel generally doesn’t have to deal with
It boils down to PSI on the piston top and how much surface area and/or mass you have to move the heat to the rejection device(s)
Since less energy and lower compression ratio, gasses’s need to rev higher to do similar work
Then the rest of the metrics. Like, since higher compression ratio, the components are much larger to handle the higher PSI’s...but that means more weight/mass to throw, which limits the upper end RPM limits
Must touch on the current serial, twin turbo V6’s that has huge numbers...yes they are much larger than N/A gassers, but since small displacement, their piston/rod rank/etc weight/mass to throw is small in comparison to diesel.
No right or wrong, just preferences...I’ve preferred gasoline over diesel all my lift, as others prefer it the other way...
On that, prefer big block gassers over small block gassers...ib516 wrote:
I had a Cummins Diesel and then a 6.4L Hemi. Both did the job. The Gasser just used more fuel (25% or so) and more RPM - I had a Cummins Diesel and then a 6.4L Hemi. Both did the job. The Gasser just used more fuel (25% or so) and more RPM
- More overkill, I like more overkill!
