Can i delete these cooling lines?

[nomansland92]

Ok so #18 and #19 goes from the back of the block then to the throttle body then up to the thermostat housing. From what i understand then just bring hot coolant through the throttle body then back down. However at the throttle body it connects up with the valve cover breather which if the gasket goes back then its going to mix coolant and oil. Well this is whats happening but the three screws are so corroded that they will just break and then its will be a pain to re-tap them or get a new housing. But if i run #19 directly to the thermostat housing that would eliminate everything.

Any one see a problem with this?


Thanks, Stevan

[!kid]

if I understand you right, your want to remove the coolant lines that connect to the T.B.?

thus no longer having coolant heating the T.B. ?

the easy way to do this is just connect #18 and #19 to each other.

since you live in PA I would recommend leaving the coolant lines running through the T.B. if you can.

[nomansland92]

yep thats what im getting at, and ya i could just connect them together and i might but it would just look cleaner with less hoses running everywhere. I don't see why the t.b. would need to be heated? Isn't cold air better anyway?

[MR 325]

On all of my cars I have removed them. Just run bulk 3/8" heater hose from the fitting on the back of the block straight to the fitting on the thermostat housing.

[!kid]

yep thats what im getting at, and ya i could just connect them together and i might but it would just look cleaner with less hoses running everywhere. I don't see why the t.b. would need to be heated? Isn't cold air better anyway?

from what I have read, one of the reasons why the TB has coolant lines is to help with fuel atomization.

what I did in the past to plug the lines, I went to a hardware store and bought a Brass bolt and a copper washer to plug the line on the side of the block. for the small line that goes to the thermo housing a just cut off a short piece of hose clamped one end onto housing and put some RTV on a bolt than placed it in the other end of the hose and clamped it.

[MR 325]

You shouldn't be blocking it off, it needs to flow.

Do as I recommended.

[Kershaw]

from what I have read, one of the reasons why the TB has coolant lines is to help with fuel atomization.

not for fuel injected cars.

it has to do with condensation then ice forming in the throttle body. although the chance of this happening is small, i'd still keep it if i were you. if you live in a warm climate, you can do away with it no problem.

[Sagaris]

I knnow that throttle body icing is one reason for it, I have also heard that it helps keep the PCV vapors in vapor form so that they dont condense into liquid form and make a mess of your intake.

[Kershaw]

i cant imagine that helping much, since that already happens. its why the TPS, AFM, TB, and the ICV get gummed up.

i'll reiterate that these lines need to be connected, if you want to bypass the TB. NOT BLOCKED OFF.

[kronus]

Hmm, we have them blocked off on the race car and it seems fine, no cooling problems to report. Why does it need to be looped?

[Kershaw]

because you dont want a blockage in your cooling system. just loop them and let the system flow freely.

[!kid]

I have had mine blocked for over 5000+ miles, no issues.

so are you also saying that using the AKG heater block off plate and plug is bad too?

[xpress325]

If your in a cold climate, you TB will freeze.

[Justin B]

because you dont want a blockage in your cooling system. just loop them and let the system flow freely.

When your heater solenoid is a closed, it doesn't flow anyway, and there is no blockage in the system. The water will still flow properly through the block and head through the water passages and head gasket holes. The head just under the ports, along the intake side there where tube comes out at the end, is just a water passage that starts up near cylinder 1. The temp sensors protrude into it. I believe by looping that, all you effectively do is turn that passage into a full loop without a heat exchanger (heater core), and is in effect useless as it is away from the normal flow of coolant needed to cool the motor directly. Only is useful if you still need to keep a warmed tb. Otherwise, if not, all you have is an over complicated reservoir that fills from both end of the head.

This is what I did,

Done.