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I would like to find out the proper way to treat a rusted throttle body. This throttle body has never been touched from the factory setting and I would like to keep it that way.
I want to remove the rust and corrosion you see without taking it apart. I can remove the rubber diaphragms to soak the whole thing in a solvent.
What would you recommend, I have been using lemon juice on nuts and bolts with success removing rust, but it leaves the metal without any protection from further rusting!
This is an interesting one. You might be able to soak in evap o rust. This is non corrosive, as far as I know. Also an ultrsonic cleaner might work. It still will have a need to be protected from further rust though. Maybe just keep it coated in non flamable spray coating?
Evap-o-rust is my go to for iron and steel. I use it in my ultrasonic cleaner especially to clean up old tractor carb parts. For the aluminum, I like to use baking soda as an abrasive. Whether you use it in an abraisive blaster, or make a paste, it helps scrub off the corrosion on the aluminum. You can take all the stuff off to give it a good cleaning. Just don't touch the set set screws. There should be one for the primary throttle plate shaft, and one for the secondary plate shaft. Leave those two and their jam nuts alone and it keep the factory settings. I would sort out the iron/steel parts from the aluminum and just use the evaporust on the steel parts. You can give them a protective coat afterwards. Just scrub the aluminum clean. It oxidizes in atmosphere anyway, so coating it won't amount to much.
the FD throttle body comes apart, without having to mess with any of the adjustments, like the throttle stops, i bet this would as well.
these things are basically just a carburetor without a float bowl
Evap-o-rust is my go to for iron and steel. I use it in my ultrasonic cleaner especially to clean up old tractor carb parts. For the aluminum, I like to use baking soda as an abrasive. Whether you use it in an abraisive blaster, or make a paste, it helps scrub off the corrosion on the aluminum. You can take all the stuff off to give it a good cleaning. Just don't touch the set set screws. There should be one for the primary throttle plate shaft, and one for the secondary plate shaft. Leave those two and their jam nuts alone and it keep the factory settings. I would sort out the iron/steel parts from the aluminum and just use the evaporust on the steel parts. You can give them a protective coat afterwards. Just scrub the aluminum clean. It oxidizes in atmosphere anyway, so coating it won't amount to much.
I will order some Evap-o-rust for the steel parts as you suggested, thanks! I found the thread where someone takes his throttle body apart and refinishes it, pretty through. Just going to take my time with this.
What do you recommend for a protective coating after the parts are cleaned? Silicon oil? I want a dry coating that won't let the dirt cling to everything.
Evap-o-rust is my go to for iron and steel. I use it in my ultrasonic cleaner especially to clean up old tractor carb parts. For the aluminum, I like to use baking soda as an abrasive. Whether you use it in an abraisive blaster, or make a paste, it helps scrub off the corrosion on the aluminum. You can take all the stuff off to give it a good cleaning. Just don't touch the set set screws. There should be one for the primary throttle plate shaft, and one for the secondary plate shaft. Leave those two and their jam nuts alone and it keep the factory settings. I would sort out the iron/steel parts from the aluminum and just use the evaporust on the steel parts. You can give them a protective coat afterwards. Just scrub the aluminum clean. It oxidizes in atmosphere anyway, so coating it won't amount to much.
I didn't expect it to be both cleaner and evap o rust.
I will order some Evap-o-rust for the steel parts as you suggested, thanks! I found the thread where someone takes his throttle body apart and refinishes it, pretty through. Just going to take my time with this.
What do you recommend for a protective coating after the parts are cleaned? Silicon oil? I want a dry coating that won't let the dirt cling to everything.
Thanks to everyone for the tips!
Just as a friendly comment, I forgot how expensive the evap o rust is. Scrubbing with baking soda and a toothbrush is a good idea, it is a lot of work though. best wishes on the project. Post some after shots if possible. I apologize if these posts burry your question.
I didn't expect it to be both cleaner and evap o rust.
You still have to scrub all the crusties and bits off before you put it in the ultrasonic bath. By having the temperature of the evaporust turned up in the ultrasonic cleaner, it not only helps the evaporust work better, but the heat helps release any oil spots that may still be hidden in crevices.
As far as coating for the steel parts, you can use spray on clear coat for engine parts. I would oil or grease the springs instead of clear coat since they will flex enough to flake it off.
02-13-24, 07:57 PM
