No Replacement For Displacement?

[Eddo Rogue]

Everybody knows that its chrome that gets you home. Not cubic inches.

Chrome dont get you home, but it might get you dome.

 

[racsan]

I think its a marketing thing, if you look its “X” horsepower-tourque @ “Y” rpm. my 2011 escape 3.0 is rated at 240 hp @ 6,000 rpm. youd have to lock it in 1st gear and go 65 to do that, with 3.5? gears its cruising at 1600 at 55, youd never be running it at 6 grand.

 

[pjtoledo]

Air flow efficiency is a thing too, ford was making 3 liter naturally aspirated engines in the late 80s and early 90s that were around 200hp. I've got a supercharged 4.0 OHV that is around that horsepower. It's way more useful in a truck than that 3.0 would ever think of being because of the powerband though. (I'll find out if this is actually true soon enough, haha)

actually those engines were made by Yamaha. they were rated at 220 hp.
the 2 blocks, Vulcan & Yamaha, were nearly identical in bore & stroke, all the extra power came from heads, intake, and exhaust manifolds.

 

[Dirt Squirt]

FYI, new for 2023 Indy car engine is 2.4 liter,146 cu.in. twin turbo @900 hp. Also only gets 1.92 mpg. I still want one anyway.

 

[RonD]

My Yamaha R1 is 998ccs (.98L) and makes 158hp. The power starts to really come on around 7,000rpm. I usually shift around 13,500 rpm. Torque is dismal.

Displacement is just the easy, lazy way to power. Its kind of like a trained and tuned lil skinny guy lifting the same weight as a regular big fat guy.

No, displacement is the most reliable way to get more power
A stock V8 will always be more reliable than a boosted I4
But a boosted I4 will have better MPG than the V8, because of its lower displacement during lower power situations

If you want to stick with the trained man vs fat man analogy then the trained man will have more injuries while training than the beer drinking fat man with no training

 

[Dirtman]

No, displacement is the most reliable way to get more power
A stock V8 will always be more reliable than a boosted I4
But a boosted I4 will have better MPG than the V8, because of its lower displacement during lower power situations

If you want to stick with the trained man vs fat man analogy then the trained man will have more injuries while training than the beer drinking fat man with no training

That analogy makes no sense! I get injured waaaaay more while drinking beer than I do while exercising!

 

[RonD]

Yes, but the injuries are not related to your ability to lift weights, just your ability to make good choices after a few wobbly pops

 

[don4331]

Horsepower (hp) = Torque (ft lb) * rpm / 5252. So, if you want to increase hp of your 4.0 OHV which make max power at 4200, remove lifters/pushrods/rockers, and make a SOHC so it revs higher and makes max power at 5250 and you easily get 25% more power. But note torque peak rpms increased by 25%.

Torque is more complex. Torque (ft lb) = displacement * compression ratio * volumetric efficiency * air density / fancy constant.

Displacement is pretty much set by initial engine design​

Compression ratio depends on fuel specified and combustion chamber burn rate​

Volumetric efficiency is controlled by intake and exhaust ports (includes everything from air filter to muffler).​

Air density is function of altitude - here in Calgary at kilometer high, I get less than those at sea level; temperature - more power at -40C in winter than in summer at 40C, and density adders (supercharger - either crank, electric or turbine driven).​

​

You can build same power out of a smaller engine for the same amount of time, if you use better materials. And over time, we have improved materials, but the downside is it comes at higher cost.

 

[snoranger]

That analogy makes no sense! I get injured waaaaay more while drinking beer than I do while exercising!

You don’t spend much time exercising, do you?

 

[Ranger850]

@Dirtman
@Dirt Squirt

 

[Dirtman]

You don’t spend much time exercising, do you?

Life is an exercise!

 

[85_Ranger4x4]

Life is an exercise!

View attachment 61266

Rewatching your movie?

No, displacement is the most reliable way to get more power
A stock V8 will always be more reliable than a boosted I4
But a boosted I4 will have better MPG than the V8, because of its lower displacement during lower power situations

If you want to stick with the trained man vs fat man analogy then the trained man will have more injuries while training than the beer drinking fat man with no training

Kinda where I am at on trucks.

I want to stick with a V8. Less going on, less to leak, will NEVER eat a turbo etc.

Then I drove a Coyote and surprisingly felt unimpressed. Didn't really like the rest of the truck either so EB is not really an option.

Back up three times and punt...

 

[snoranger]

Life is an exercise!

View attachment 61266

What you’re trying to say is “no”.

 

[Dirtman]

Then I drove a Coyote and surprisingly felt unimpressed.

All predators are coyotes, but not all coyotes are predators...

 

[85_Ranger4x4]

All predators are coyotes, but not all coyotes are predators...

View attachment 61267