Can anyone give me an "as detailed and as technical as possible" of how much and where to port the 2WD head to allow 400 to 500 HP?

I need to pass the instructions to the local engineering workshop to carry out the works.

Thanks!

 

IF they dont already know how to do it i would be weiry of using them to do it Where abouts are you mate as theres a few ppl/companys that know cossie heads inside out on here that could help you out!!

 

The problem mate is that I live in Singapore! I guess I may have to order a head from UK then... Do you know how much is a head port over there? Thanks!

 

Between Ł600-Ł1000 depending on how good you want it.

 

Fookin ell didnt realise mate!!! Fair play to havin a cossie all the way out there thou!!!!

 

There's 7 Sierra Cossies here. All Sapphire 2WDs...

 

Funny thang is 99% of the people on the road don't recognize the Cossie. Think its a bloody Hyundai Elantra or summat... People tend not to give way cos they think its a slow car, boost it a little and enjoy the look on their faces... Love giving those racer boy EVOs, REXs, TYPE erroRs a rude shock...

 

Head porting can become very expensive, with top spec heads exceding Ł2k

 

i have have over 2500pound in my head combo!!!

 

wouldn't let them touch my car i would go to a recomended ford tuner worth it in t he long run

 

he is in singapore mate, i doubt there is a recomended ford tuner out there

 

Yeah... Most people over here play with the Jap cars... So a Ford tuner is non-existent...

 

Anybody knows what does "Port 26mm Inlet and 25mm exhaust"? The valve openings or the manifolds?

 

Valve sizes generally stay the same.

 

hi - i'm currently wondering the same - what gets ported exactly?. i did get told that the inlet ports need to be opened up to 24mm diameter and that 'not much was required for the exhaust'