turbo 6 port -- porting recommendations
Thread Starter
Joined: Feb 2006
Posts: 2,897
Likes: 2
From: Renton/Bellevue/Seattle WA
turbo 6 port -- porting recommendations
I just blew one of my s4 turbo NAs side seals so I am going to be doing a rebuild soon on my spare. I am planning on doing a medium to large street port. I don't want that bad of gas milage and I'm not the biggest fan of brap brap.
On a stock lower compression s4 NA at 4 psi I put down 184.5 whp. From my limited research I have heard people saying a street port can add 10%-20% pretty quickly. I would be exstatic to have 200 whp @ 4 psi still just from a simple port job.
I think I should be able to do well over 200 seeing how
The engine will be fresh with higher compression
I will have a standalone/rtek for better tuning
I might be at 5.5 psi now that I will have a better stock wastegate
putting in the t2 exhaust sleeves to get rid of that stupid na silencer thingy
and then also a little street port.
I have also been thinking of putting the s5 UIM on so I can use the little extra RPM gained from the street port. I thought that alone added 10-15 hp? Maybe that is just on an NA with working 5+6 ports sleeves?
I am looking for a port recommendation. Or if anybody knows of a good template that can net me those 10-20% gains. I will also be porting the exhaust hopefully to help spool a little quicker.
I guess forget the whole taking out the middle peice between the ports. Would SUCK for drifting to always be at a higher rpm, and my stock turbo wouldn't like it much either.
Anyways let me know on your ideas on my ideas.
~Tweak
On a stock lower compression s4 NA at 4 psi I put down 184.5 whp. From my limited research I have heard people saying a street port can add 10%-20% pretty quickly. I would be exstatic to have 200 whp @ 4 psi still just from a simple port job.
I think I should be able to do well over 200 seeing how
The engine will be fresh with higher compression
I will have a standalone/rtek for better tuning
I might be at 5.5 psi now that I will have a better stock wastegate
putting in the t2 exhaust sleeves to get rid of that stupid na silencer thingy
and then also a little street port.
I have also been thinking of putting the s5 UIM on so I can use the little extra RPM gained from the street port. I thought that alone added 10-15 hp? Maybe that is just on an NA with working 5+6 ports sleeves?
I am looking for a port recommendation. Or if anybody knows of a good template that can net me those 10-20% gains. I will also be porting the exhaust hopefully to help spool a little quicker.
I guess forget the whole taking out the middle peice between the ports. Would SUCK for drifting to always be at a higher rpm, and my stock turbo wouldn't like it much either.
Anyways let me know on your ideas on my ideas.
~Tweak
Automatic = Power drain
Joined: Nov 2006
Posts: 399
Likes: 0
From: Pennsylvania
The diffusers have to go on the exhaust for sure. I don't know if the S5 manifold flows better or only adds variable runner length. I have heard that turbo manifolds flow better than NA manifolds for high RPM (please correct me if I am wrong.)
Thread Starter
Joined: Feb 2006
Posts: 2,897
Likes: 2
From: Renton/Bellevue/Seattle WA
very demanding... not sure what you need to know, obviously if you are going to be running such a high horsepower setup you must know the basics correct?
This is somewhat of an older plan of mine. I might not even do a 6 port anymore.
This is somewhat of an older plan of mine. I might not even do a 6 port anymore.
