Figure I'd post up some of the polishing and porting I've been doing

CobraRed_96_GT

Active Member

May 20, 2006

1,421

3

39

UCSD/La Jolla

Mar 15, 2009

#1

• Mar 15, 2009

• #1

To a 01 cobra intake manifold:
How it was:



Finished
YouTube - Hand polished 2001 cobra intake manifold

Did porting/gasket matching today:


During porting. Notice how much material is taken out and the roughness of the stock port next



Polished:

 

02nightmaregt

To hell with your Mustang, I want to see your HOG!

Jul 1, 2007

513

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19

Southern Indiana

Mar 15, 2009

#2

• Mar 15, 2009

• #2

Nice dude. That thing is looking real good!

 

Tazzy

New Member

Jan 6, 2009

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PA

Mar 15, 2009

#3

• Mar 15, 2009

• #3

looks good but you should leave a rough surface in the intake runners to aid in fuel atomization. if the runner is polished the fuel will form droplets and not burn efficiently.

 

CobraRed_96_GT

Active Member

May 20, 2006

1,421

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39

UCSD/La Jolla

Mar 15, 2009

#4

• Mar 15, 2009

• #4

Tazzy said:

looks good but you should leave a rough surface in the intake runners to aid in fuel atomization. if the runner is polished the fuel will form droplets and not burn efficiently.

Click to expand...

The runner isn't polished
It's just the plenum that attaches to the throttle body, Everything else in the lower is stock, and since the plenum area never sees fuel as the injectors are well after it - i dont see how that applies.