TB coolant hose question

sgarlic

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#1

• Apr 29, 2005

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A guy I work with has a (I think '95) Bronco, with the 5.0 in it. He said I should cut and plug up the coolant hoses that run to the throttle body, as the coolant just makes it hotter and flow less. Is he full of crap or should I do it?

 

Ourobos

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Apr 12, 2004

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#2

• Apr 29, 2005

• #2

Hear it both ways, done it both ways. I'de leave it like Ford made it.

 

HISSIN50

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#3

• Apr 29, 2005

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yep, my thinking is that the 200* coolant helps cool the EGR housing (which has 600+* gasses flowing through it, which heats up the TB/intake). i would leave the lines.

if it was intended to help de-ice the TB butterfly, i think they would have used a heat riser off the exhaust instead (much quicker).

 

sgarlic

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#4

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Gotcha.. I'll leave it.

Next topic: In the process of trying to remove my TB today to clean it, it wouldn't come off. So I just removed the entire upper intake. Every single hose was dry rotted and several had holes. The inside of the intake manifold is black, and hard.. carbonized to hell. Can I just douse it with carb cleaner and hope it all comes back out? If I port/polish it, how do you polish the inside? Lastly, anything else I should do while I have the upper off? First and probably last time I'll be doing that.

 

HISSIN50

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#5

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i would get something like top-end cleaner and let it soak. I cant remember if you are still SD, but fixing those vac lines should help (or if it was running well, as i might surmise) make it run even better. a stockish SD motor should pull almost 20" hg vacuum at idle.

some TB's have teflon inside them. i dont like to use carb cleaner on teflon, but rather TB cleaner (with no toluene).

you can grab a new plenum to lower gasket for about 5 bucks at Autozone.

and i would really clean up the EGR while you have access to it. it probably has seen better days (carbon can hold the valve open or keep it from seating, which results in the position sensor being out of calibration).

my two cents. good luck.

 

sgarlic

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#6

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As always Hissin, the advice is much appreciated.

I'm curious if you have any ideas about how I could dislodge the TB from the intake? I even tried letting PB blaster soak the gasket and it still won't come off. It almost looks like somebody used loctite on the studs. As far as polishing the TB, can I just use a dremel and some rubbing/buffing compound?

I'm almost wondering since I have that off, if maybe I should just remove the lower too and clean that up.

 

HISSIN50

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You are a savvy guy, so i probably cant think of anything for the TB that you have not. when i get irritated, a rubber mallet comes out.

I have done shadetree port and polish work, but nothing that i am proud enough to share - i will defer that to the other smart folks in here.

you could do the lower if you want - you will be posting in a week that the motor is being removed (made sense since the intake was off. ). that is how it goes.

And thanks for the kind words. If you are ever out-and-about or go to a show or meet, let me know and i will see if i can make it. always cool to meet a fellow stanger.

 

sgarlic

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I guess I'm mostly wondering if porting is even worth anything on the TB or upper intake. From what I understand, if you port too much and then the gasket doesn't fit properly, you've just made your intake worthless.

I would imagine polishing might actually do some good for about an hour, until the carbon all comes right back..

*grumble.. stupid internal combustion.. grumble..*

 

HISSIN50

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#9

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the guys who seek every last bit of HP (the plug side cutters and indexers, and folks who match gaskets and all that kind of thing) say yes it matters. I am far too crude to be like that - i personally dont think it matters. as i recall, the lower is kind of a decent bottleneck in the intake. i would not try that myself (i know enough to know i would not do it, but you are probably more capable than I). Tom does excellent porting for a great price and that is the route i would go, were it me. and then i might swap a latemodel TB on instead of trying to polish the stock turd (so to speak).

just my two cents. bump for others.

 

Ourobos

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May 1, 2005

#10

• May 1, 2005

• #10

That TB should slide off with the studs still in, i'm sure you know.. Do you have a vice you could clamp onto the TB and pull the intake off of it?

 

sgarlic

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#11

• May 1, 2005

• #11

Ourobos said:

That TB should slide off with the studs still in, i'm sure you know.. Do you have a vice you could clamp onto the TB and pull the intake off of it?

Click to expand...

I do at work.. I'll bring it in there tomorrow.. that sucker is mega-stuck. Thanks for the reminder

Oh, and off topic, on the way home tonight, I witnessed a late model trans am with license plates "Owned U" get "owned".... by a nissan ultima.