Port & polishing

[Tampa_Gen_13]

Has anyone tried to port and polish their headers, intake manifold, or throttle body?

How do you think stock ecu would handle the change in airflow?

I know the intake manifold is plastic but, there is a good chance that it could be honed out professionally without jeopardizing the integrity. I have done it to other cars and seen some success. Your not going to get insane numbers but, you will allow the engine to breathe better when done properly.

Thoughts?

 

[kf4zra]

Not sure if it will make much difference, but wanted to say Hi to another Tampa 5.0 gen2 owner.

 

[84FordMan]

From what we have learned so far from tuning Tau V8s is this:

- They are hungry for air.

However where it is starving does not seem to come from the intake manifold, rather from the intake piping. Going from a 4" diameter intake pipe to a more conventional 3.5" diameter pipe resulted in a 10 WHP loss on a tuned Tau.

Throttle body boring might net a few more, as for the exhaust manifolds there are far greater concerns in it than port shape or roughness. Hyundai has made small improvements over the years, the 4.6 had just the most basic log style, the BH 5.0 had a minor improvement in merging and the DH 5.0 took the merging a step further to make it more like a header (Still a ways off though).

Magnaflow has said they will make a performance exhaust manifold set for the Tau if enough people contact them about it. Those of us at Snoopy Panda have already contacted Magnaflow, as well as a few other owners. If you are interested, just go to Magnaflow's website and click their Contact Us link and fill out a quick blurb on their online form.

 

[Tampa_Gen_13]

From what we have learned so far from tuning Tau V8s is this:

- They are hungry for air.

However where it is starving does not seem to come from the intake manifold, rather from the intake piping. Going from a 4" diameter intake pipe to a more conventional 3.5" diameter pipe resulted in a 10 WHP loss on a tuned Tau.

Throttle body boring might net a few more, as for the exhaust manifolds there are far greater concerns in it than port shape or roughness. Hyundai has made small improvements over the years, the 4.6 had just the most basic log style, the BH 5.0 had a minor improvement in merging and the DH 5.0 took the merging a step further to make it more like a header (Still a ways off though).

Magnaflow has said they will make a performance exhaust manifold set for the Tau if enough people contact them about it. Those of us at Snoopy Panda have already contacted Magnaflow, as well as a few other owners. If you are interested, just go to Magnaflow's website and click their Contact Us link and fill out a quick blurb on their online form.

How is the tuning coming along? Any chance of any break through's this year? or any updates about the supercharger kit?

I never heard, was the plan with the supercharger to be mass produced or readily available or was this a one off kind of deal?

I should finally be doing the brembo swap here in the next few days or so and I just received every suspension component that Ultra Racing makes for the Genesis sedan. With that being said, I will post in the suspension forum once I install all of the UR components.

 

[Rey]

"Porting and Polishing" is an old catch phrase going back to the 50s when it was commonly done to flathead Ford V8s. Present technology in head design is such that the benefits of porting and polishing are minimal. Ports are usually as large as possible nowadays; and polishing per se is even less beneficial.
One area that can be improved is size of the throttle body. There is a brisk market for large throttle bodies for Chevrolet LS series, but nothing is offered for Hyundai. However, there is one vendor who will bore your throttle body several mm. Cost about $100. HP increase mabe 5-8 hp. See www.maxbore.com. All he does is bore throttle bodies. He does a quick turn around too.

 

[84FordMan]

How is the tuning coming along? Any chance of any break through's this year? or any updates about the supercharger kit?

I never heard, was the plan with the supercharger to be mass produced or readily available or was this a one off kind of deal?

I should finally be doing the brembo swap here in the next few days or so and I just received every suspension component that Ultra Racing makes for the Genesis sedan. With that being said, I will post in the suspension forum once I install all of the UR components.

Nothing new from Sam on the 5.0 tuning front.

As for the supercharger, tweaking the adapter plate design to be able to hold the maximum amount of boost the supercharger is capable of generating, which is well more than what the Tau is probably capable of holding, but might as well future proof the design if we can.

We do intend to sell it as a kit, however the supercharger we are using is no longer in production. So we are at a crossroads, if we cannot present Eaton with a solid business case to restart production, then we will sell the adapters, belt drive kit, fuel system, wiring harness, heat exchanger, pump and let you source the supercharger.

 

[Tampa_Gen_13]

Nothing new from Sam on the 5.0 tuning front.

As for the supercharger, tweaking the adapter plate design to be able to hold the maximum amount of boost the supercharger is capable of generating, which is well more than what the Tau is probably capable of holding, but might as well future proof the design if we can.

We do intend to sell it as a kit, however the supercharger we are using is no longer in production. So we are at a crossroads, if we cannot present Eaton with a solid business case to restart production, then we will sell the adapters, belt drive kit, fuel system, wiring harness, heat exchanger, pump and let you source the supercharger.

Which would actually be a pretty attractive option. A vast majority of the cost is going to be tied to the supercharger itself, at least from a consumer stand point.

I guess my next question, which is incredibly premature, what would the estimated ball park figure be on the kit retail?

 

[DavidHanLee]

Which would actually be a pretty attractive option. A vast majority of the cost is going to be tied to the supercharger itself, at least from a consumer stand point.

I guess my next question, which is incredibly premature, what would the estimated ball park figure be on the kit retail?

If he can gather enough signatures to make a case that would be awesome. I'm happy to put my name on the list. Sourcing a supercharger separately as a non technical consumer may not necessarily appear attractive.

 

[fgarcia308]

"Porting and Polishing" is an old catch phrase going back to the 50s when it was commonly done to flathead Ford V8s. Present technology in head design is such that the benefits of porting and polishing are minimal. Ports are usually as large as possible nowadays; and polishing per se is even less beneficial.
One area that can be improved is size of the throttle body. There is a brisk market for large throttle bodies for Chevrolet LS series, but nothing is offered for Hyundai. However, there is one vendor who will bore your throttle body several mm. Cost about $100. HP increase mabe 5-8 hp. See www.maxbore.com. All he does is bore throttle bodies. He does a quick turn around too.

Doesn't seem worth it for only 5 to 8 horsepower at least when you did the heads you got almost 30 hp

 

[Husky]

Umm, porting and polishing heads and intake runners is not just a thing from the 50s. It's alive and well and has been for decades. Standard procedure for any race motor, and not at all unique to old flatheads. Very common for OHV V8s from the 60s - 90s. It is probably true that with more modern engine designs with larger ports that it's less critical/beneficial.

Tech Corner: Porting and Polishing Your Own Cylinder Heads - The Engine Block

Porting and polishing cylinder heads is something every engine builder knows they should do. However, having the job done by a machine shop can cost a lot of money. Not to mention, you have to take the time to research the best place for the job, so you know that money is well-spent. And speaking

www.theengineblock.com

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