197 engine

[Matty86]

they get higher results than mk2s generally

it's not an F4A, its an F4R 830

[stan]

They have more complex VVT (not lift), which allows incremental inlet opening over a range of crank angle, as opposed to just on/off actuation.

Bottom end geometry is the same, bellhousing fixture is different.

Different inlet and exhaust manifold.

The power figure from the factory is questionable, as with the 172's and 182's...they dont make book figures as standard.

[J o n]

one at GDI was stamped with F4A on the block which confused me... no idea then... lol

they make 184-186bhp on Omex/GDI rollers btw. 182/172 make around 166-170bhp iirc

[Matty86]

the bitching from the mk2 owners about the 197's power reminds me of the williams' comments about the mk2 :D

[J o n]

dunno why, it's a better engine tbh, they should just deal with it lol

the F7R and F4R aren't much different, the cam profile is wilder on the 172 which is where the extra power must come from... about the eqivalent of fitting some RN2002's and not even mapping the car.

[richy]

obviously renault have tryed to develope it more to gain the extra power, cant fault that, just the usual over estimating the power lol

i dont personally think the 197's are shit, ive driven loads and could do back to back runs against my 182, but theres not enough there to make me jump from my 182 to a 197, much rather get the meg 230 r26 or r26r is had cash!

[richy]

btw i was highly disapointed to not see a turbo version clio, should of been clio 230 with lsd lol

[stan]

the F7R and F4R aren't much different, the cam profile is wilder on the 172 which is where the extra power must come from... about the eqivalent of fitting some RN2002's and not even mapping the car.

Heads, cams, manifolds, ecu....

[MAXIBOY]

what you think of the ndo box richy

[richy]

tbh i didnt think it was particually bad at all, gear selection felt abit notchy on some i drove, maybe thats down to the feel with the cable selection, but that said not that bad, been over a year since ive driven a 197/225 now! these were all virtually new cars at the time.