Coolant lines on tb
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Post Fiend
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Coolant lines on tb
We were debating the pro's, and cons of a tb spacer, when this guy jumps in, and talks about the benifit of a spacer has nothing to do with air flow, but keeping the air cool once it's cooled by the tb. Then starts talking about the coolant lines on the tb. Someone called him on it , and the moderator had to get on him, he got so angery. I went out , and double checked my tb on my 4.0, in case Iv'e been missing something, NOTHING! Iv'e had th tb's off several of my fords over the years, and they had no coolant lines either. I don't want to call this poor guy insane, maybe I,m just not understanding what he's trying to say. Anybody got a clue? it's posted on the aftermarket forum, tb spacer post, if you wanna give a look see. I just don't understand what he's talking about, but I would like to.
Post Fiend
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From: Durant, OK (SOSU)
Well I'll be the first to tell you the TB spacer is one of those things I see no improvement in.
That being said...I'm calling bs on this guy, as in perhaps he has no idea what he's talking about. Coolant lines in the throttle body? A) impossible, nowhere to route the coolant, and I really don't see it dealing with being inside the engine very well, and B) what exactly would be the point anyways. The coolant would be hotter than the throttle body I do believe since it's exposed to air the whole time.
This is going to turn into another intake/anti-intake post...God have mercy lol. We saw a minor improvement on my dad's truck, which was throttle body injected. Other than that, I don't see a fuel injected truck caring much, carbed obviously there are benefits to be had.
I'm not sure on this kid though. I looked in my truck, no coolant lines, our 2000 Silverado, no coolant lines, my dad's GMC, which is throttle body injected, no coolant lines. Closest one is the one going in the top of the block.
I wonder if he means the vacuum lines at the back of the intake manifold? That would make me laugh lol.
That being said...I'm calling bs on this guy, as in perhaps he has no idea what he's talking about. Coolant lines in the throttle body? A) impossible, nowhere to route the coolant, and I really don't see it dealing with being inside the engine very well, and B) what exactly would be the point anyways. The coolant would be hotter than the throttle body I do believe since it's exposed to air the whole time.
This is going to turn into another intake/anti-intake post...God have mercy lol. We saw a minor improvement on my dad's truck, which was throttle body injected. Other than that, I don't see a fuel injected truck caring much, carbed obviously there are benefits to be had.
I'm not sure on this kid though. I looked in my truck, no coolant lines, our 2000 Silverado, no coolant lines, my dad's GMC, which is throttle body injected, no coolant lines. Closest one is the one going in the top of the block.
I wonder if he means the vacuum lines at the back of the intake manifold? That would make me laugh lol.
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Post Fiend
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You got me pilot, I am totally lost on what he's talking about. Did you read his posts, he sure seems convinced that they are there, so much so that it made me start to wonder. I don't care about the spacer, it's like bigfoot, it's up to the believer. But this coolant thing has got me puzzled.
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From: Randolph, NJ
Originally Posted by wendell borror
You got me pilot, I am totally lost on what he's talking about. Did you read his posts, he sure seems convinced that they are there, so much so that it made me start to wonder. I don't care about the spacer, it's like bigfoot, it's up to the believer. But this coolant thing has got me puzzled.
I've never seen coolant lines going to a throttle body, but I haven't seen every engine out there. My 4.0L OHV certainly doesn't have external lines to the tb.
-Jim
Last edited by PSKSAM2; Mar 24, 2006 at 09:14 AM.
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I work on Land Rovers. Most have multipoint EFI systems and all have a pair of coolant hoses going into a small casting below the throttle butterfly. They are there to heat the area and prevent throttle icing in cold humid weather. I have heard of people removing or blocking these lines to prevent excess heating of the air in warm weather. I believe other manufacturere may use something similar. They may not be necessary on a throttle body injected vehicle as there will be warmth coming up through the manifold to prevent this. On a multipoint injected vehicle with the throttle blade fairly insulated from the heat of the engine, they are necessary in cold weather. This whole thing may be a matter of a misunderstanding of the term 'throttle body'.
Logistics Pro
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From: suburban atlanta
Well, it may be of no interest, and may not relate, but some of the 2.3l EFI Rangers have a coolant line going to the lower intake manifold... not the TB, but sorta close. Could that be some source of confusion?
tom
tom
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From: MN
The coolant lines he's talking about go to the egr spacer and not the throttle body most likely. I have a 5.0L Mustang and it has an egr spacer between the throttle body and the upper intake. There are coolant lines running through there to cool the spacer that is heated by the hot exhaust gases that go through it.
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From: SoCal
Originally Posted by roadsiderob
I work on Land Rovers. Most have multipoint EFI systems and all have a pair of coolant hoses going into a small casting below the throttle butterfly. They are there to heat the area and prevent throttle icing in cold humid weather. I have heard of people removing or blocking these lines to prevent excess heating of the air in warm weather. I believe other manufacturere may use something similar. They may not be necessary on a throttle body injected vehicle as there will be warmth coming up through the manifold to prevent this. On a multipoint injected vehicle with the throttle blade fairly insulated from the heat of the engine, they are necessary in cold weather. This whole thing may be a matter of a misunderstanding of the term 'throttle body'.
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Laughing Gas
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Originally Posted by waldreps
The coolant lines he's talking about go to the egr spacer and not the throttle body most likely. I have a 5.0L Mustang and it has an egr spacer between the throttle body and the upper intake. There are coolant lines running through there to cool the spacer that is heated by the hot exhaust gases that go through it.
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From: Eastern WA
Originally Posted by roadsiderob
............They are there to heat the area and prevent throttle icing in cold humid weather. I have heard of people removing or blocking these lines to prevent excess heating of the air in warm weather. I believe other manufacturere may use something similar...............
.
Last edited by CowboyBilly9Mile; Mar 24, 2006 at 02:45 PM.
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Post Fiend
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Great feed back guys, he was so convinced that he was right, I figured there must be something to it, thats why I called on the gang. So indeed on some engines there coolant lines to intake, and a egr spacer, and what not. But none to the tb it's self. You can read what he said, it's the aftermarket products forum-tb spacer. He must of ment something else, and called it a tb.
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Post Fiend
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PSKSAM2, I don't want to get into the tb spacer debate, thats not what the post is about. But with that said," if you spend the hundred bucks for the spacer, and buy dyno time( or free dyno) and it doesn't work, you've at least wasted a hundred bucks. there have been dynos done on tb spacers, results very to engine, and whos doing the testing. Any gains, if at all, are slight. The only engine that I could tell any benifit, were the jeep 4, and 6 cylinder inline engines, and ford tbi engines from the 80's. My theory is they seem to work better on engines that have the tb mounted horizontal, verses vertical, that theory may not hold water in real world testing, they for sure worked on carbed engines. Everybody has an opinion on what they work on, or if they work at all, as I'm sure you will see shortly, as this can of worms has now been openned.
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From: Eastern WA
Originally Posted by wendell borror
But none to the tb it's self.
Last edited by CowboyBilly9Mile; Mar 24, 2006 at 04:12 PM.
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From: Durant, OK (SOSU)
So the thought being they warm the TB in cold weather once they heat up.
Rangers don't have them. We've settled on that, correct?
This guy drove what, an F-one fiddy? If that's correct, might find out what engine and see if it has it.
Just outta curiosity, this coolant does stay like in the throttle body right, as in the phsyical metal not going into the TB itself and into the engine.
Rangers don't have them. We've settled on that, correct?
This guy drove what, an F-one fiddy? If that's correct, might find out what engine and see if it has it.
Just outta curiosity, this coolant does stay like in the throttle body right, as in the phsyical metal not going into the TB itself and into the engine.
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I just reread the post, Fagg4juggoloz claims that a ford probe,mx3,mx6,626,2001 ranger sohc 4.0, 91 ranger 2.3, and a 98 chevy blazer all have 2 coolant lines running to the tb, "o yeah" k series motors. He also claims he got 6 hp on a sohc 4.0 ranger with a tb spacer, and 21 hp on a mrz turbo ( whatever that is ) with a spacer, and he's got dyno sheets to prove it. He's really misunderstood, or he's insane, all I gotta say.