i am thinking of polishing my upper plenum myself soon...i hope soon...but anyways... can i polish the inside as well or is that better left untouched??

polished = smoother airflow??

no?? correct me if im wrong..but just a thought

thanks

 

I dont see any benefit in polishing the inside. I'd do the outside only. Let me know how it turns out!

 

I spoke to Tony about this. I will be polishing both upper and more importantly lower intakes. He told me that when he polished the lower plenum it netted him 4 more ponies at the wheels. He also told me it wasn't too much fun, a lot of labor. I have all kinds of polishing equipment at work so it'll be just something to do while the machines run! Just don't tell my boss!!!! Strtsk..... you never heard of P n P (port and polish)?

 

should look HOT

 

oo...i dont know anything about porting...how much can i get that done for??
i just have a basic aluminum polishing kit...

 

You will gain some hp and what not if you do inside but you will also run hotter if the outside is polished. With the surface being smoother there are no pits for the air to get trapped in an cool. It's like shaving the vents off you Diff cooler...

 

no i havent ... sorry

 

If increased performance is your goal, I would tend to lean towards the opposite - a polished interior would smooth out airflow, increasing efficiency. A rougher outside would have greater surface area for thermal dissipation.

 

Can you get it extrude honed? Just the lower manifold and the bottom portion of the upper manifold. I don't know how much that service would cost, but it would save you a lot of time.

 

ive looked around the web...extrude honing is not wat i would like to spend money on....seems like + $600 easy

 

Thats a VERY good point. People take note of this.

 

Ill keep my mouth shut.. if you do mine too! ..hehehe im in NH.. whatya say!?!

 

I totally agree with your comment. Polishing the inside has worked well for me.


DaveO

 

^ Sick!!

 

How did you polish the inside?