Cold Air Intake - not a how question, but a "should I?"
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Joined: Feb 2004
Posts: 368
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From: Finland
Car: 1991 Trans Am GTA
Engine: 350 TPI (L98)
Transmission: TH-700r4
Cold Air Intake - not a how question, but a "should I?"
I'm thinking of a cold air intake to get some more power out of my GTA, it's apparently a cheap mod that does alot of good, but the big problem that I've heard is that it is suspectible to water, drive through a puddle and the car could stall and such, where I live I cannot have a car thats afraid of a little water, or ALOT of it either, water schmater it should be able to say, if it was KITT
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Joined: Apr 2003
Posts: 1,751
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From: Bonner Springs, KS
Car: 1995 Corvette
Engine: LT1
Transmission: 6 spd Manual
Axle/Gears: Dana 44, 3:45:1
The first thing you should do is the throttle body coolant bypass (mentioned in a tech article here, pretty simple)... I can say that it reduced my average intake air temperature from around 125* to around 85* (in 50-60* weather), as documented by scan logs...
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Joined: Dec 2003
Posts: 647
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From: Oklahoma
Car: 1991 Trans AM GTA
Engine: 5.7L TPI
Transmission: 700R4
sorry to jack your thread, but i have a question about the TB Bypass. Does anyone have any pics that show in a little more detail the procedure? I have looked at the one in the tech article over and over and still do not understand it.
tia
john
tia
john
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From: Carson, CA
Car: '88 GTA, 90 Formula
Engine: 5.7 TPI, fed growth hormones
Transmission: 700r4 4u2?
Axle/Gears: 9bolt
Wow, Finland. Cool! (literally)
I bet your car really turns heads there? confused:
An underhood cold air system will be fine if you have the intake or air filter high enough in the engine compartment that you will not suck water if you have to drive through a big puddle.
The engine can eat a medium rainstorm (well, medium California rainstorm, anyway) right into the intake, and it's actually good for the engine (water injected steam cleaning anyone?)
However, a major dump of water into the intake cannot be compressed, and will stop your engine and possibly bend your rods.
A little water will not hurt anything. A lot of water can be a disaster. I hope this helped.
Troy
So Cal
I bet your car really turns heads there? confused:
An underhood cold air system will be fine if you have the intake or air filter high enough in the engine compartment that you will not suck water if you have to drive through a big puddle.
The engine can eat a medium rainstorm (well, medium California rainstorm, anyway) right into the intake, and it's actually good for the engine (water injected steam cleaning anyone?)
However, a major dump of water into the intake cannot be compressed, and will stop your engine and possibly bend your rods.
A little water will not hurt anything. A lot of water can be a disaster. I hope this helped.
Troy
So Cal
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Joined: Apr 2003
Posts: 1,751
Likes: 4
From: Bonner Springs, KS
Car: 1995 Corvette
Engine: LT1
Transmission: 6 spd Manual
Axle/Gears: Dana 44, 3:45:1
I'll run out and grab a pic of the tb bypass...
Last edited by thirdgen88; Mar 31, 2004 at 11:51 AM.
Supreme Member

Joined: Apr 2003
Posts: 1,751
Likes: 4
From: Bonner Springs, KS
Car: 1995 Corvette
Engine: LT1
Transmission: 6 spd Manual
Axle/Gears: Dana 44, 3:45:1
Here's a similar view with the bypass installed (note the rubber caps on the throttle body end, don't want any bugs to start nesting in there):
Supreme Member

Joined: Apr 2003
Posts: 1,751
Likes: 4
From: Bonner Springs, KS
Car: 1995 Corvette
Engine: LT1
Transmission: 6 spd Manual
Axle/Gears: Dana 44, 3:45:1
One more view from the passenger side... One hint, you will need a piece of 5/8" heater hose with a molded 90* bend at one end to prevent kinking (if you retain the factory style hose nipple as I did)...
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