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why dose hood scoop rout air over the exhaust manifold? #136434 Mar 27, 10:02am Mar 27, 10:02am
Joined: Dec 2003
Posts: 487
Portland, Oregon
GTS2003BLK OP
Senior Member
2003 Toyota Celica
GTS2003BLK OP

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?

Re: why dose hood scoop rout air over the exhaust manifold? [Re: GTS2003BLK] #136435 Mar 27, 12:04pm Mar 27, 12:04pm
Joined: Jul 2002
Posts: 10,123
Milford, NJ
VSGTS14
05 WRB
2005 Subaru WRX STi
VSGTS14

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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.


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Re: why dose hood scoop rout air over the exhaust manifold? [Re: GTS2003BLK] #136436 Mar 27, 12:53pm Mar 27, 12:53pm
Joined: Jul 2003
Posts: 517
Pittsburgh, PA
Krayze
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Krayze

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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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