Ported engine ??

[Licari3]

I was looking at a few rebuilds and a few of them mentioned they had got their engine ported. What is this and what does it do? Any help would be appreciated mate 's

[Danza V]

You can port the intake, exhaust manifolds and turbo wategates, which is what a lot people tend to do

[morgey]

Yeah just opening up the air intake and exhaust ports on the head. They can also be polished, the idea is to get gasses in and out quicker meaning better performance.

[Licari3]

so this has to be machined professionally i guess ey ?

[morgey]

Its actually hand worked, but If its to be done properly yes, each port wants to be very closely matched to one another so you really need to no whats what as if you go too deep you could go through to a water pocket!

If you are going crazy They can even be flow tested to get them equally matched.

If you were just to polish them then you could probably do that yourself.

[Jim*]

What kind of bhp increase can you see from this? Or quicker spool times?

[morgey]

Few hp, depends on how mad u go but yeah spool times should be dropped.

Best asking people who have it done.

[AdamB]

Leave a head alone unless you know how it makes power.

Porting a head does not necessarily gain hp or improve spool time. It depends how restricted the head is in the first place. Pissing about with a cylinder head makes or breaks engine performance.

Porting a cylinder head used to be 90% material removal and 10% shaping, now its 90% shaping and 10% removing material.

Unless looking to make 300bhp + I would put the money else where.

Edited March 30, 2013 by AdamB