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172 Vs 197 cylinder head



Adeyspec

ClioSport Club Member
  57 Renault Dauphine
Some of them are just solid engines, my bone stock internally 172 phase 1 engine with just 197 cams and injectors and an rs2 inlet made 212.

it'd be good to have a comparisons of ph1 vs ph2 engines and their outputs. if I remember correctly my old ph1's used to have decent sized exhaust ports vs the later heads?
 

Coops Mk1

ClioSport Club Member
  Lots of Scrap...
it'd be good to have a comparisons of ph1 vs ph2 engines and their outputs. if I remember correctly my old ph1's used to have decent sized exhaust ports vs the later heads?

My phase 1 172 (2001, 150k, stock bar cat back stainless) - 167bhp
My 182 (2004, 190k at the time, stock bar cat back stainless) - 170bhp

same rollers, similar temps on the days they ran
 

Luke_Exc

ClioSport Club Member
  V6 255, ITB'd 172
From memory the ph1 exhaust ports are actually a little too big aren't they?

Usually the difference is well within the margin of error. You can't really compare dynos with dynos either so they have to be same day, back to back as above.
 


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