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89 302 throttle body coolant lines - bypass

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Old 10-01-2010, 11:45 AM
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Default 89 302 throttle body coolant lines - bypass

Hey guys,

I have a slight leak n the upper fitting for my throttle body coolant lines (looks like where the steel elbow has been pressed into the aluminum TB) and I was thinking of bypassing the TB altogether. I've done it on a few cars to reduce intake charge temps before with no issue of the throttle blades freezing, but just wondering if people here have done this.

Thanks!
Old 10-01-2010, 12:38 PM
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Originally Posted by Clip
Hey guys,

I have a slight leak n the upper fitting for my throttle body coolant lines (looks like where the steel elbow has been pressed into the aluminum TB) and I was thinking of bypassing the TB altogether. I've done it on a few cars to reduce intake charge temps before with no issue of the throttle blades freezing, but just wondering if people here have done this.

Thanks!
Last time this debate reared it's head, it went on & on (& on) to no real "discernation" (I think I just made that word up, but I really like it). Maybe you'll get lucky this time.

I'll raise this view up the flagpole & see how it fares:
In a temperate climate, probably not an issue. Also that it may serve as a temperature stabilizer, rather than to just increase temperature. It is in close proximity to the mounting of the EGR, which generates a fair amount thermal radiant heat transfer.







NEXT.......................

Last edited by ymeski56; 10-01-2010 at 12:45 PM.
Old 10-01-2010, 06:28 PM
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Why not just fix it right?
Old 10-02-2010, 02:19 PM
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How? New throttle body? Or are these elbows threaded into the aluminum (thought they were pressed)?
Old 10-02-2010, 02:41 PM
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Originally Posted by Clip
How? New throttle body? Or are these elbows threaded into the aluminum (thought they were pressed)?
They appear to me to be pressed. Is the leak where they join?
Old 10-02-2010, 02:46 PM
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Mine doesn't have that, but I believe they're pressed. I would try to get the old one out at least, maybe thread the hole for a fitting.
Old 10-02-2010, 03:02 PM
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Originally Posted by Just call me Sean
Mine doesn't have that, but I believe they're pressed. I would try to get the old one out at least, maybe thread the hole for a fitting.
Hey Sean! What do you think about the offsetting of EGR radiant heat? On my 302, they're right next to each other.
Old 10-02-2010, 03:20 PM
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Speculate that its purpose is to prevent icing resulting from the pressure drop across the butterfly from atmospheric pressure to manifold pressure. If so, probably not a problem as long as it's 45degF or higher outside, or in a dry climate.

Figuring Ford wouldn't have spent the extra bucks to install this feature if it wasn't needed for some reason. Just trying to understand the reasoning, and whether it would be worth the effort to keep it working.

Would there be an opportunity to epoxy around the joint?
Old 10-02-2010, 03:27 PM
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Originally Posted by ymeski56
Hey Sean! What do you think about the offsetting of EGR radiant heat? On my 302, they're right next to each other.
Originally Posted by wde3477
Speculate that its purpose is to prevent icing resulting from the pressure drop across the butterfly from atmospheric pressure to manifold pressure. If so, probably not a problem as long as it's 45degF or higher outside, or in a dry climate.

Figuring Ford wouldn't have spent the extra bucks to install this feature if it wasn't needed for some reason. Just trying to understand the reasoning, and whether it would be worth the effort to keep it working.

Would there be an opportunity to epoxy around the joint?
In addition to prevent icing resulting from the pressure drop across the butterfly from atmospheric pressure to manifold pressure. That part is a for sure.

Last edited by ymeski56; 10-02-2010 at 03:29 PM.
Old 10-02-2010, 05:26 PM
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Originally Posted by ymeski56
Hey Sean! What do you think about the offsetting of EGR radiant heat? On my 302, they're right next to each other.
Not really sure what you mean.


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