WRC3 news & rumors 2023

[AnttiL]

Ford has announced that fiesta has around 235hp with 1.5 liter (3cyl) engine and Renault has announced that clio has 260hp with 1.33L engine. (4cyl). How is it possible? They have different restrictors (officially 31mm) or this is just typical politics from manufacturers? If looking just those numbers I quess Clio is much faster. Anyone there knows how this goes? Anyway it is nice to see 2 Manus in rally3.

What about torque?

Rallying isn’t just about top power but also the engine usage range.

[Thousandlakes]

Can add weight for those list also.

What about torque?

Rallying isn’t just about top power but also the engine usage range.

[becher]

What about torque?

Rallying isn’t just about top power but also the engine usage range.

Still it would be about 10% horsepower difference which would be huge. You also need to remember that torque an hp are directly linked so so just different characteristics (where is the torque/power in the rev range wouldn't be enough to explain the difference).

I think it is the usual, power figures in motorsport are useless. I suspect M-Sport gives the "power" figure that the class is suppose d to have and Renault slipped up and quotes more like the actual figure. Kind of like the 285hp Rally2 claims, yet on the dyno those produce about 320hp.

[ictus]

Ford has announced that fiesta has around 235hp with 1.5 liter (3cyl) engine and Renault has announced that clio has 260hp with 1.33L engine. (4cyl). How is it possible? They have different restrictors (officially 31mm) or this is just typical politics from manufacturers? If looking just those numbers I quess Clio is much faster. Anyone there knows how this goes? Anyway it is nice to see 2 Manus in rally3.

Did you also belive that all the 2litre WRCs had 300hp?
Fiesta shows 250-260hp on the dyno

[Kras]

Ford has announced that fiesta has around 235hp with 1.5 liter (3cyl) engine and Renault has announced that clio has 260hp with 1.33L engine. (4cyl). How is it possible? They have different restrictors (officially 31mm) or this is just typical politics from manufacturers? If looking just those numbers I quess Clio is much faster. Anyone there knows how this goes? Anyway it is nice to see 2 Manus in rally3.

Correct me if im wrong, but wouldnt having more cylinders alow you to run a shorter stroke engine couplef with lighter moving parts which would allow it to rev higher and produce more power?

Wasn't that the main way they tunned cars for power before turbos? Big bore, short stroke

[dimviii]

Correct me if im wrong, but wouldnt having more cylinders alow you to run a shorter stroke engine couplef with lighter moving parts which would allow it to rev higher and produce more power?

Wasn't that the main way they tunned cars for power before turbos? Big bore, short stroke

its not that simple/More cylinders=longer/heavier engine

[Kras]

Yes, but the weight of the car has nothing to do with the power output. And they are already using balast anyway, so with a heavier car you reduce the balast

[dimviii]

Yes, but the weight of the car has nothing to do with the power output. And they are already using balast anyway, so with a heavier car you reduce the balast

so lets build 6 cylinder engines

[becher]

Correct me if im wrong, but wouldnt having more cylinders alow you to run a shorter stroke engine couplef with lighter moving parts which would allow it to rev higher and produce more power?

Wasn't that the main way they tunned cars for power before turbos? Big bore, short stroke

Yes it would, but with a turbo restrictor engine it is pointless to make a classic NA high reving engine as you wouldn't be reaching those revs anyway.