camshaft

[lee_clio_mk2]

just wondered if anyone could tell me wether or not my clio 1.2 8v (2000 year) uses a overhead camshaft?

 

[u33db]

Err....dont all cars?

 

[lee_clio_mk2]

the reason i asked is because i know some cars are push rod operated

 

[McBunny]

we are going back a few years there lol

 

[Fusion]

Yes, until the introduction of the duratec engine in the Ford Ka this year, the previously used ecotec engine featured push rod operated over-head valves, the engine had it roots in the old Ford Anglia engine used in the 60s and not a massive deal had been changed in the mecanism

 

[VoRN-182]

So the Durtatec is is old technology?

 

[Rich-D]

Quote: Originally posted by u33db on 22 September 2003

Err....dont all cars?

Nope, hence OHV (OverHead Valve) engines mate...

 

[McBunny]

no no such thing

ohc over head camshaft lol

or dohc double overhead cam shaft

 

[Tom]

wtf is this about

OHV engines: a series, gt turbo lump

OHC engines pinto, audi 2.0e lump

DOHC: k series, 172 etc

Your 1.2 8v is ohc

 

[McBunny]

i dont know any car that has valves at the bottom of the engine so all cars have over head valves

your not thinking cvh are ya

 

[Alex M]

No ohv refers to having the camshaft further down in the engine, operating pushrods connected, usually through a rocker arrangement, to the valves. A OHC is just refers to the fact that the cam is above the valves and operated on them more directly. CVH engines are OHC, but operate a type of rocker setup to allow the 8 valves to both be run from the single cam, yet still allowing them to be angled significantly. This combined with ports designed to vortex the incoming mix allowed (supposedly) more effiecient combustion, hence compound valve hemispherical CVH. Ford used to run loads of side valve engines and ones with the valves actually upside down compared to modern designs, most manifacturers engines are getting more and more similar, little individuality

 

[BenR]

the KA ran the endura, a modern tweek on the crossflow.

The anglia never actually ran the crossflow, it ran the 3 main bearing pre crossflow.