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

CobraRed_96_GT

Active Member
May 20, 2006
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UCSD/La Jolla
To a 01 cobra intake manifold:
How it was:
Picture17115283.jpg

Picture17115311.jpg


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
Picture1711558248.jpg

Picture1711558250.jpg

Picture1711558252.jpg


Polished:
Picture1711558254.jpg

Picture1711558257.jpg

Picture1711558259.jpg
 
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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.
 
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.
The runner isn't polished:scratch:
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.