coolant bypass

[SuperTeg]

Does anyone have any pictures of how they hooked up their coolant bypass to the throttle body to keep the temps down? If so please post them. Im am a person who works better off of visuals. Directions confuse me.

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As long as its fast!

[SuperTeg]

nobody, huh?

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As long as its fast!

[blownLS]

No,
but don't do it.

You can freeze your throttle open on a 60 degree day. Its a physics thing, I am a Meteorologist, don't ask me to explain.

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[JT98CivicEX]

<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by blownLS:
No,
but don't do it.

You can freeze your throttle open on a 60 degree day. Its a physics thing, I am a Meteorologist, don't ask me to explain.

<HR></BLOCKQUOTE>

Interesting, how can you make such statement and not explain? Do you mean during winter time when temp is way below 60 degrees, the throttle will get stuck open if someone starts driving without warming up the engine?

JT


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[blownLS]

I have a degree in Meteorology, and to explain in non physics terms is not an option for me. Its very hard to explain.

On a 60F degree day, does not matter which month, your air gets squeezed or venturied into your TB, when air speeds up it creats low pressure believe it or not. Does a windy day occur with a cloudy, rainy, low pressure day (cold frontal system), or when on a clear sunny day (hot High pressure day)?
This will decrease the temp of the air moving across your throttle plate (which is thin) This plate can dip 40F degrees. When Humid air with a dew point above 32f moves over the plate, it can condense the air to a liquid depositing water on the TB plate freezing it immeditatly.

Thats the best I can do. If I have confused you, go buy a physics book.

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[217gsr]

blownLS:

That's a pretty good explanation, but are you taking into account the 160+ temps that are underhood? The throttle body's metal plate isn't that thick. I'm guessing that the underhood temps combined with the steadily increasing temps of intake air would more than likely negate that effect.

Maybe what you're saying is true, but something like that would most likely only happen in a closed system with perfect laminar flow.

Many of us on this board are professionals also. A concise physics explanation isn't asking too much.


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6 psi JRSC GSR: GSS-317, 3" intake -> 217 hp/155 ft-lbs.
New: BTC, MAP controller, and stock timing!
Soon: Endyn stepper?

[This message has been edited by 217gsr (edited October 18, 2001).]

[blownLS]

I know people who have bypassed this with no ill effects. But they all live way down south.

You are right, the hot engine temps will negate this some, but when we are not racing the engine and are going 75mph on the freeway and the temperature and dew point are in line with the moon and stars it can happen. Its that rare chance that makes auto makers put hot coolant thru them anyway for sake of lawsuits. Yes the chances go up the farther North you live and yes the chances go up the closer into winter you get, but I am not willing to take the chance just to make 1hp.

The airflow spends such a brief time going thru the TB, it really doesn't pick up much heat. So 1hp is probably a far reach.

Just my opinion.

I wasn't trying to offend anyone of their physics knowledge, just making fun of myself for not being able to transfer very visual thoughts into words. We talk in meteorlogical terms so much at work, I come home and my wife doesn't even understand me. Shit sometimes I don't even understand myself.

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[Holden]

All I know is that mine is bypassed and I've been driving in 40-50 degree weather and no problems have ocurred.

I will be hooking it back up next week for inspection and for winter. Need to change coolant mix too.

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Greg Holden
96 GSR, JSRC @10psi, All the Goodies!
Best 1/4 ==&gt; 13.556 @ 105.29mph
My JRSC Install Site

[zip]

I'm not a meteorologist but I've had positive results with bypassing the coolant for the TB and IAC on my setup for over a year.
http://www.hostboard.com/ubb/Forum40/HTML/007173.html

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Innovator of the JRSC electronic boost controller
Mods

[Charged R]

I froze-up the carbs on my '70 240Z on a sub-zero Michigan day after disconnecting the carbureator heating pipe. Never had a problem when the temps were above the teens. But, is this really relevant?

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98ITR, JRSC, AEM/CAI, Comptec