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Old 02-18-2001, 07:10 AM   #1
Damian
Scooby Newbie
 
Member#: 3615
Join Date: Jan 2001
Location: Rochester Hills, Mi
Vehicle:
2004 STi
Black and stuff

Post Headers and Pulleys.

This probably belongs in the technical or newbie forums, but I wasn't getting any answers in there. Probably because it's a lame question that everyone knows the answer to except for me

What are headers and what do they do?

What are those pulleys all about that I keep seeing in magazines?

I did a search, but all I could find were questions like "what is the best header?"

Thanks in advance.
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Old 02-18-2001, 07:19 AM   #2
Nanase
Scooby Newbie
 
Member#: 2591
Join Date: Oct 2000
Location: Markham, Ontario, Canada
Vehicle:
2000 Impreza TS
Silver

Smile

headder=exhaust manifold
the tube bends exactlly the same length as the other so it provide a smooth exhaust flow, therefore +hp & +torque

Pulleys, a smaller dia. and lighter then the stock. it free up some hp taking by the steering, a/c, and water pump, so it increase hp.
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Old 02-19-2001, 12:11 AM   #3
mrbell
Scooby Specialist
 
Member#: 1871
Join Date: Jul 2000
Location: Salt Lake City, UT
Vehicle:
2000 Impreza 2.5RS
Blue Ridge Pearl

Post

Actually... the Borla headers(seems to be most popular) are not equal-length. They follow the same pattern as the stock headers(which are also not equal-length), but a freer flow due to mandrel bends and larger diameter tubing. The MRT header system is equal length. Nice setup too. it's the whole exhaust system, but is incompatible w/ a turbo, so I'm not going that route. Also, if you plan on a turbo and you want the borla headers, you'll need a bracket to support the turbo. Usually, I think the turbo just rests on the stock headers.
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