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Joined: Dec 2003
Posts: 487
GTS2003BLK
Senior Member
GTS2003BLK Mar 27, 5:02pm - #136434 

Senior Member
2003 Toyota Celica

Joined: Dec 2003
Posts: 487
Portland, Oregon
why dose hood scoop rout air over the exhaust manifold?

There is likely a reason for this that I am ignorant of, but can anyone tell me why the Hood scoop on my 03 gts routs air down and over the exhaust manifold?

Why not route the air, at least some of it over the Intake manifold to help keep it cooler?

Im guessing that Celica dose this to prevent the exhaust manifold from over heating.

From what I have been reading I thought it was better to keep the exhaust gases as hot as possible, hence the reason why some people go as far as to wrap insulating material around the exhaust manifold to boost Performance, although I suppose like anything else this can be taken too far?
Joined: Jul 2002
Posts: 10,123
VSGTS14
05 WRB
VSGTS14 Mar 27, 7:04pm - #136435 

05 WRB
2005 Subaru WRX STi

Joined: Jul 2002
Posts: 10,123
Milford, NJ
i have seen people wrapping the Intake manifold to keep it cool, but not exhaust...but i know nothing.

SUBARU TECNICA INTERNATIONAL
Joined: Jul 2003
Posts: 517
Krayze
Senior Member
Krayze Mar 27, 7:53pm - #136436 

Senior Member

Joined: Jul 2003
Posts: 517
Pittsburgh, PA
its there to cool off the heat sheild and firewall so teh cabin temp doesn't rise.

67 mustang fastback
289 v8
soon to have 5 spd
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