Is 5 l v8 as fast as 4 l v10?

>>28460062 (OP)
Assuming everything else is the same (compression, intake and exhaust flow, rpm limit, fuel octane, etc. etc.), no, the larger displacement will in theory have the greater potential to make more power. More displacement = more fuel & air = more zoom zoom.

>>28460062 (OP)
Assuming everything else is the same (compression, intake and exhaust flow, rpm limit, fuel octane, etc. etc.), the larger displacement will in theory have the greater potential to make more power. More displacement = more fuel & air = more zoom zoom.

some Porsche engineer said that friction losses were an problem
mostly the piston rings, and a little bit in the valve train.

Is a red computer faster than a blue one

At the same RPM, yes.
But with smaller displacement and more cylinders, it is assumed that it can rev much higher, making more power at the top end.

Tough to compare, there are a lot of factors to consider. It would be best to take some car from the same manufacturer, same era with more cylinders, less displacement and compare them.
Problem is, almost noone does that. You can check Mazda MX-3 1.8 V6 and compare to Mazda 626 wirh 2.0 I4. But that also isn't trustworthy comparison, MX-3 was sports car in assumptions.

>>28460062 (OP)
Configuration isn't that important. A 5L v8 will outperform a 4L v10.

>>28460358
Compare the K8 in the MX-3 to the BP in the Miata. Both Mazda engines, both from around the same era, both 1.8l, both in sporty cars.

all things being equal, more pistons == more valve area == more power. 2 pistons probably won't make up for 1 liter less displacement though

>>28460365
They even share some valve train parts, when I did a valve adjustment on my NB some of the shim part numbers I needed were for the MX3 V6.

Amount of cylinders or displacement won't tell anything about an engine.

>>28460365
Yeah, thtat's better comparison, but still different bore/stroke ratio which affect power and torque.

Moreover, it comes down to Torque vs Horsepower, mostly.

>>28460455
It kind of will. A 5 liter 4 cylinder is likely going to be a low RPM torque monster commercial style engine. A 500cc 4 cylinder is likely going to be a high RPM, high strung engine with not a lot of torque.

>what is centrifugal forces and rotating mass
No.

>>28460062 (OP)
a 5L V8 is not as fast as a 5L V8

>>28460267
As you add more cylinders, you are reducing the lag between each stroke of torque, and you are improving effectivity due less losses due off balance.
As RPM goes higher, this lack of balance means more momentum go to engine and seals over transferring to crank..

By looking at what is made
There are diminishing returns past 4 cylinders, butt if they are not over engineered its easier to make 6 cylinders than do balance out the 4 a lot more. Same with 6 vs 8, where there is even more diminishing returns.
And since we are getting more 3 cylinder production cars, it might just mean at that engine to weight ration adding more turbo balances more than adding one more cylinder..
>but what about blown headgaskets and oil leaks
Exactly

>>28463959
Quick question: did you fall on your fucking head

>>28463931
yes it is

>>28464511
the 5L V8 has way more power

>>28464996
but why would a 5L V8 be slower than a 5L V8?

>>28465007
because the 5L V8 makes way more power

>>28465012
but how does a 5L V8 make more power than a 5L V8

>>28465015
overnight parts from japan

>>28465017
they better be folded 1000 times from the finest nippon steel

>>28465015
Different bore/stroke ratio, different max rpm, different rotating assembly weight, different intake/exhaust port sizes, different combustion chamber shape, different number of valves, different fuel injection methods, different timing, different compression ratios, different cam profiles... There are a lot of factors that can drastically effect the power output of an engine, even if they're the same displacement and number of cylinders.

>>28465015
I don't know, how does a Ford Coyote make more power than a Chevy 305?