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197 cams are only a small upgrade mate tho for the price of them ATM if u have to change ur t belt any time soon I would be fitting a set
197's are a good choice if you have a very small budget and are due a belt. Just helps to keep them alive a little longer top end.
The 197 cams are slightly more agressive than the 172/182 camshafts, and are fairly cheap 2nd.
The 421/438 cams are more agressive, and will offer more performance but cost a lot more.
Depending on the type of cams you choose, the cars state of health, the timing and who maps it will decide if it looses any torque somewhere, but a general rule of thumb is you will loose a little low down and gain up top, but it really does depend on what I stated above
Do you have to get the 197 cams mapped in or will they run on standard setup. I have a 172 whats due a belt so while its getting done i suppose there is no harm fitting a set of these. Wouldnt mind the group n cams K tec racing offer but abit pricey at £600. I use my car as a road car and the odd track day now and then. Whats people recommend?
Thought i would post up hear instead of starting a new thread.
Thought i would post up hear instead of starting a new thread.
Group N = standard cams but machined to the maximum of the manufacturing tolerances, so won't be as good as the 421/438 or 197.
NorthloopCup
ClioSport Moderator
Is that with the 197 cams set on standard timing or inlet advanced chip? Reason I ask is I'm gonna throw a set in on the full grp n timing settings and use the genuine grp n ecu from Renault seeing as I've already got it.
NorthloopCup
ClioSport Moderator
I'll be putting the wideband on it anyway so we shall see I suppose. I'm not entirely sure they can be flashed with a Rs tuner either.
Assuming they are well mapped on the 172 cams, then you'd expect it a little lean at the top end on 197, not ideal.
Personally I would just install aftermarket so you can do the job properly TBH, but I must confess that tends to be my answer to almost everything as I cant see the point in modifying an engine and then not having proper control over it.
Personally I would just install aftermarket so you can do the job properly TBH, but I must confess that tends to be my answer to almost everything as I cant see the point in modifying an engine and then not having proper control over it.
Low down they are ok, but the 438's have been adjusted to work better at lower revs iirc. I'm happy with mine though. You won't notice a massive difference from Cams alone though imoTiming is a need to know thing. Afaik me and mike Woodford are the only people who know what to set them up at.
Ported TB will make about as much difference to power as a set of lexus rear lights.
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