Throttle Body Removal Question

[PDX-GST]

So I am going to rebuild my throttle body since I have boost leaks. My only question is... Do I have to drain the cooling system to remove the coolant hoses, or is it possible to clamp them off before removing them or remove and plug?

 

[007jimmy]

It is possible to remove the coolant hoses on your TB without draining the coolant. The hoses sit way up in the coolant system so loss of coolant will be at a minimum. Just put some rags under the lines and just clamp the hoses shut or put a bolt in the end of each one.

 

[Calan]

So I am going to rebuild my throttle body since I have boost leaks. My only question is... Do I have to drain the cooling system to remove the coolant hoses, or is it possible to clamp them off before removing them or remove and plug?

You can do that. I wouldn't do it when it's hot.

Don't clamp the lines with anything that will tear them up (you shouldn't have to do anything at all with them once the coolant stops spilling out). And don't forget to top it off and bleed the system once it goes back together.

 

[TrystanGST]

Having just taken mine off yesterday for cleaning, you definitely don't need to drain the coolant. The amount coming out of the hoses/FIAV is really minimal. The bigger issue is all the cursing that will come about as you try and wiggle the TB past that poorly located cruise cable box....

 

[Diamond Star Werks]

Having just taken mine off yesterday for cleaning, you definitely don't need to drain the coolant. The amount coming out of the hoses/FIAV is really minimal. The bigger issue is all the cursing that will come about as you try and wiggle the TB past that poorly located cruise cable box....

^^Exactly. I cleaned mine the other day and it almost made me wanna do a cruise control delete. But I like my cruise control so I just removed a bolt loosened the other and turned the throttle as I took it off. don't need to drain anything just make sure you replace any loss.

and unfortunately all my cleaning was in vain as my turbo exploded after about 15 minutes of driving and filled it all back up with oil.

 

[PDX-GST]

^^Exactly. I cleaned mine the other day and it almost made me wanna do a cruise control delete. But I like my cruise control so I just removed a bolt loosened the other and turned the throttle as I took it off. don't need to drain anything just make sure you replace any loss.

and unfortunately all my cleaning was in vain as my turbo exploded after about 15 minutes of driving and filled it all back up with oil.

That sucks!

Thanks for all the advise guys. Of course as you all can tell I am new here on this forum. I have had my GST for a couple years now and have done no upgrades to it other than putting the mass air adapter on it with a Fujita filter.

Now I am make sure that my engine is in great shape before I start on the 300hp build path. My engine had all kinds of boost leaks. I had leaks at the fuel injectors and replaced the seals and o-rings and no more leaks there. Major leak at the biss screw on the throttle body. Replaced the screw and o-ring. Leak fixed there. 2g BOV not holding pressure at all, replacing that now with hard upper intercooler pipes as well. Next is the throttle body shaft that is leaking. Once rebuilt it should be holding pressure really well.

Then I will change all my belts, plugs, and wires. Then I will start my upgrades. Any other maintenance I should do before I begin with my upgrades?

 

[TrystanGST]

Short of tearing the whole engine and drivetrain apart and inspecting for wear, I think you've got your bases pretty well covered. And I give you credit for actually taking the time to do the maintenance first. A lot of people want to go straight to the go fast parts without doing maintenance, and wonder why they have issues later.

 

[007jimmy]

Short of tearing the whole engine and drivetrain apart and inspecting for wear, I think you've got your bases pretty well covered. And I give you credit for actually taking the time to do the maintenance first. A lot of people want to go straight to the go fast parts without doing maintenance, and wonder why they have issues later.

I completely agree with this.. I did the go fast parts on my stock first motor without the proper maintenance first. It cost me that motor in short time and I'll be damned if I trash my second motor due to being lazy again. PDX-GST, you have the right ideas and if you do it right you will only have to do it once.