Throttle body bypass QUESTION - Page 3 - Chevy Impala SS Forum
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post #21 of 49 (permalink) Old 12-05-2012, 02:16 PM
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its same principle of refrigeration, as we do not have carbs I didnt think it germane to throttle bodies.
liquid under pressure introduced to low pressure atmosphere will flash and evaporate causing a temperature drop.
as our throttle body blades have nothing to do with liquids gasoline or otherwise, it wont happen.

and again, nobody Ive heard of in 9 years on this board has reported their throttle blades iced up on them.

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post #22 of 49 (permalink) Old 12-05-2012, 03:30 PM
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Quote:
Originally Posted by Mr pogo View Post
and again, nobody Ive heard of in 9 years on this board has reported their throttle blades iced up on them.
How would they even know their blades iced up???
Even in the 1980's, GM had heater plates beneath the carbs.

I was once blowing down my 80 gallon air compressor. The air was coming out of a 3/4" ball valve, and aiming at a piece of wood. A layer of ice formed on the wood, and it was 90 degree's outside, in the middle of August. By the time the compressor was out of air, the ice was 1/4" thick.
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post #23 of 49 (permalink) Old 12-05-2012, 05:59 PM
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It's like a choke. If its cold outside the coolant warms it up. If its warm already then it doesn't really matter. It's more of a preference more than performance. I did it so I can change the throttle valve easier.


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post #24 of 49 (permalink) Old 12-05-2012, 08:34 PM
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Originally Posted by larryfs View Post
How would they even know their [throttle] blades iced up?
Driver's foot might find out REALLY FAST.
Since we don't have fuel going past the throttle bodies anymore - since the 90s - just do the throttle body coolant bypass and enjoy.

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post #25 of 49 (permalink) Old 12-05-2012, 09:47 PM Thread Starter
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post #26 of 49 (permalink) Old 12-05-2012, 09:59 PM
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Quote:
Originally Posted by Mr pogo View Post
and again, nobody Ive heard of in 9 years on this board has reported their throttle blades iced up on them.
The closest I ever got to the throttle blades sticking open was in a civi 4.3'd 94 on its way to the JY. The blow-by was so bad, it sent enough oily crud over time up to the tb via the pcv vent to cause the throttle to stick open a little.

Nonetheless, never had an ice problem here....


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post #27 of 49 (permalink) Old 12-05-2012, 10:09 PM
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Throttle body bypass QUESTION

Don't be skeerd. People in Minnesota,and North Dakota have bypassed theirs. One side benefit is much easier removal of the throttle body either for cleaning/inspecting,or to make it easier to get to something else. It also doesn't cost anything (I like that)
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post #28 of 49 (permalink) Old 12-05-2012, 11:10 PM
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Quote:
Originally Posted by larryfs View Post
How would they even know their blades iced up???
Even in the 1980's, GM had heater plates beneath the carbs.

I was once blowing down my 80 gallon air compressor. The air was coming out of a 3/4" ball valve, and aiming at a piece of wood. A layer of ice formed on the wood, and it was 90 degree's outside, in the middle of August. By the time the compressor was out of air, the ice was 1/4" thick.
again, those were carbed engines.
show me a port injected engine with an exhaust heat riser setup.

your air tank analogy fails.
water pools at the bottom of the tank after compressed air cools and condenses.
when the drain is opened and compressed liquid water is released from 80+ psi.
with that great a pressure difference the water will ice up.
the throttle blades see nothing close to that differential.

evil T-47 seatbelt bolts and cutdown ZQ8 bumpstops, Kore3 front brakes, TB bypass, Dynotech DS, F-body EGR, Meziere WP, Comp Cams 1.6RR/CM springs, trans by Moi Industries, Yank 3600, Earls trans cooler/rad cooler delete/Derale t-stat, RAISS, SLP headers, SLP injectors, pypes X-pipe/magnaflows, Borgeson shaft, Hotchkis springs, PPM front stuff, Metco rear arms, Clear Image DS loop/trans crossmember, 3.73s, eaton posi, Hypertech for smog \"[<img BH tuned PCM
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post #29 of 49 (permalink) Old 12-06-2012, 12:57 AM
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just do it lol
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post #30 of 49 (permalink) Old 12-06-2012, 06:36 AM
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Quote:
Originally Posted by Marky Dissod View Post
- just do the throttle body coolant bypass and enjoy.
X2 and stop with all the science and debating.

I'm with Pogo and most of the others that have done this. No real harm, no freeze ups along with some of the other benefits that have been described.

"bypass and enjoy"

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