Resolved FP manifold, to port or not?

[er82]

I'm thinking of getting the FP manifold. My question is what is the benefit of porting the manifold? Is it worth the $95?

 

[Chumpaumpalumpa]

What mods are done engine wise. And I suggest you put them in your profile as well.

 

[er82]

What mods are done engine wise. And I suggest you put them in your profile as well.

Well there are many mods on the way and most likely FP black turbo. But for now I need a manifold so that I can port match the head while it's being rebuilt.

 

[joecruz03]

I was in the same boat a few months back, trying to decide if I should get the porting on the FP. I was leaning towards yes, but then I came across a ported Evo3 manifold for super cheap and had to jump on it. I know the FP flows better than the Evo3, but in my case, I just needed something to hold me over until I upgrade to twin-scroll on my HX35.

So, in conclusion, I would say, if you plan on keeping this same set-up for a long while, then yes, I would go all out, porting, ceramic coating, all that stuff on the FP. BUT, if you just need something temporary like a place holder, then just go as cheap as you can.

 

[er82]

I was in the same boat a few months back, trying to decide if I should get the porting on the FP. I was leaning towards yes, but then I came across a ported Evo3 manifold for super cheap and had to jump on it. I know the FP flows better than the Evo3, but in my case, I just needed something to hold me over until I upgrade to twin-scroll on my HX35.

So, in conclusion, I would say, if you plan on keeping this same set-up for a long while, then yes, I would go all out, porting, ceramic coating, all that stuff on the FP. BUT, if you just need something temporary like a place holder, then just go as cheap as you can.

Good point. However, in my experience temporary solutions become permanent and if try to change them then stuff goes wrong.

 

[bo0st]

Porting is always worth it if you're looking to squeeze out a little bit more performance.

 

[1SloEvo]

I personally don't think "porting" the FP manifold does much good. Maybe cleaning up the collector slightly, but it needs nothing crazy. That said, I would work more on polishing than porting.

As far as port matching your head to the manifold, that is somewhat pointless as well. You can make tons of power on these cars without any change the port size. You don't want too much, as you could possibly lose some velocity in the airflow which might slow spoolup slightly. That being said, if you are shooting for big numbers in the 700+ range, then I would consider it a little more.

But if a setup is built properly, the exhaust ports are not going to be anything that limits you to making big numbers.