172 ph2 exhaust port shape

[wayneashford]

Does anyone have a picture of the exhaust manifold surface of the head?
I'm thinking about porting the manifold and head but would like an idea of port shape before I go do anything daft.
Ta
Wayne

 

[neil a]

Are you wanting pics of one already ported ?

 

[wayneashford]

No, a stock head - literally just the area where the gasket sits, maybe showing a little of the port shape.
There's an awful lot of the primary tubes that are not being used efficiently due to the shape of the flange ports on the manifold itself, i'm curious about what gains could be made in air speed.

 

[marinemackay2003]

Here are a few I took

http://www.cliosport.net/forum/show...h-1-vs-ph-2&highlight=Ph1+vs+ph+exhaust+ports

 

[wayneashford]

They appear to be inlet ports, anything of the exhaust side??
Thanks

 

[neil a]

Those are exhaust ports he is showing the size difference between phase 2 , and phase 1 exhaust ports. The gasket is for a phase 1 which has 30% bigger ports as standard.

 

[wayneashford]

Lol, oops - i'll get my coat.
I'm new to these Renault thingamabobs, thanks for the education