Rally2 (ex-R5) News

**dimviii** · 17th November 2020, 22:41

Originally Posted by Mirek

I have very old (13 years old) dyno measurements from an Evo IX with 100 octane stock fuel (from that time) and 102 octane race fuel, both with the old 32 mm restrictor (gr.N rules from that time). The dyno is from one of the most well known tuners from here who at that time was also doing rallies himself. The graphs give 255 Hp/489 Nm for 100 octane stock fuel and 278 Hp/565 Nm for 102 octane race fuel. Also the torque peak for the race fuel is roughly 200 rpm lower and the power band is a bit wider.

thats the right gains you can see if you maximize the benefits of a good race fuel

**Sulland** · 18th November 2020, 07:55

How much fuel does a R5 drink per 10km SS, and on normal transport stages?

Will the cleaner racefuel also make the engine last longer?

The R5 engines seems to be very durable, it is nor very often you see engines breakedown on these cars, and that is impressive!

**br21** · 18th November 2020, 08:40

Average fuel cons of R5 is around 55l per 100km on stage (depends on car, conditions, surface, driver, etc) and 10-20l per 100km on road section (mainly depends on driver and road type).
Better fuel maybe is not influencing engine life, but with Pb98 for example sensors like EGT or lambda live much shorter than on race fuel.
Yes, they are reliable, one of main factors is low boost they're running with.

**Fast Eddie WRC** · 18th November 2020, 10:51

Originally Posted by Mirek

350 bhp is impossible for R5 and a complete nonsense. Period.

As an proper R5 car yes, but cant such a car be used under other regulations and use a different state of tune (restrictor) to produce more power ?

There were cars running in the BTRDA championship in the UK using Fiesta R5+ cars with more power than a homologated R5.

Mellors could be suggesting the same could be done to their Iriz.

**Mirek** · 18th November 2020, 11:25

Originally Posted by Fast Eddie WRC

As an proper R5 car yes, but cant such a car be used under other regulations and use a different state of tune (restrictor) to produce more power ?

There were cars running in the BTRDA championship in the UK using Fiesta R5+ cars with more power than a homologated R5.

Mellors could be suggesting the same could be done to their Iriz.

I already answered that.

**Sulland** · 19th November 2020, 13:28

Mr Prokop was out testing 4 different R5s the other day. Any reports from him after the tests, on what car he thought suited him best, and why?

Will he be taking the C3 for a test as well, or has that one been counted out?

**Tom K** · 19th November 2020, 13:53

It is always difficult to judge from drivers' words, but after Fabia/Polo/i20 test I would say he was* most happy with Polo, but the next day he seems to be even more happy with Fiesta

After first trio he told also that still 2 manus left, so maybe C3 is also in the game.

*My opinion is based on his film-review published on Facebook.