Carb Coating

[85_Ranger4x4]

Anyone know of a coating you can put inside carburators to keep corrsion from gumming up the works? It is a pretty common problem (especially with cast iron carbs)

I have been busy and since it is kind of an odd sized tractor that hasn't been falling into any jobs my ol' C has been sitting for a couple years. I am moving to a place I can keep it inside (and with a belly mower mow my yard) so dad said to get it out of its shed so he can get his baler in for the winter or he will drag it out. I dump gas in it, let it run out the bowl drain to hopefully flush out any trash. Of course when I close the drain it runs out the air cleaner... tapping with a screwdriver handle wouldn't stop it so I rip the air cleaner and carb off and tear into the carb. The needle had rust bits in and the top housing and the intake tract of the carb look pretty tough as well. No trash in the sediment bowl and there is an inline filter as well. Kinda glad the needle didn't seat so I didn't suck all that flakey rust through the engine...

I am on a timeline so I went ahead and cleaned up and put a kit in it but it would be nice to know of anything if I run into it again.

 

[shane96ranger]

I know Eastwood had some paint specifically for carbs in their catalog. Also, you can powder coat them as well.

Found this on powder coating:
http://www.eastwood.com/carburetor-rebuild-carburetor-repair-powder-coating-a-carburetor

 

[UpStandingMember]

I don't think the powder coating will work. In step 8 it said "mask-off and plug all critical threaded holes, metering ports, gasket surfaces and throttle body venturi surfaces". So I'm thinking the powder coating is for the outside of the carb. It would look nice though.

If it has a choke, try and close that if it's going to sit for a while. If it doesn't, maybe make a cover for the it.

 

[85_Ranger4x4]

I don't think the powder coating will work. In step 8 it said "mask-off and plug all critical threaded holes, metering ports, gasket surfaces and throttle body venturi surfaces". So I'm thinking the powder coating is for the outside of the carb. It would look nice though.

If it has a choke, try and close that if it's going to sit for a while. If it doesn't, maybe make a cover for the it.

I wondered about that too, there are some pretty small passages in there.

The "correct" color for the outside is a dull orange paint, I can just puffcan that like I did the rest of the tractor. It is by no means museum correct but looks decent from 20' away.

The choke butterfly shaft is in the bottom pic, it actually took a litle doing to close because it was stuck open.

 

[88_Eddie]

what about the non-stick stuff they use on pots and pans? i saw on Xtreme4x4 that they had it used on something to keep mud from sticking to it. i dont know if it could work for that or not

 

[85_Ranger4x4]

what about the non-stick stuff they use on pots and pans? i saw on Xtreme4x4 that they had it used on something to keep mud from sticking to it. i dont know if it could work for that or not

I think the gas would eventually wash it out.

I know a lot of aluminum carbs have a plastic type coating on the inside to prevent corrorsion, I was wondering what that is for stuff.

 

[kryptonitecb]

I'd be worried about whatever coating you use clogging up your jets.

Sent from the road while ignoring traffic

 

[85_Ranger4x4]

I'd be worried about whatever coating you use clogging up your jets.

That and whatever didn't plug them up going into the engine. I figured somebody out there had come up with something and it would basically have to be designed to do it so it didn't break free and go through the engine.

That flaky crap in the choke was barely stuck to the housing. If the needle hadn't messed up I would have been running that through my engine, wonder what the valves would think of that...

 

[UpStandingMember]

What about this stuff I bought from Eastwood?

I'm going to use it on the top of my cylinder heads. Supposed to help get the oil back down to the block faster. I'm also going to use it on the bottom of my intake manifold as a thermal barrier. I figure every little bit that I do to my V6 might help with the horsepower.

Here's the link....

http://www.eastwood.com/glyptal-red-brush-on-1-qt.html

I just remembered something else. Quite a while ago this was banned from Nascar. They were using this type of paint to coat the bottom of the INSIDE of their intake manifolds. That was a thermal barrier as well, keeping the fuel and air mixture cooler until it got in the combustion chamber. Thus creating more horsepower. I tried looking this stuff up a while back and could never find it. I don't remember what it was called either. But anyway, try to google it, maybe you'll have better luck than me.

 

[shane96ranger]

I just remembered something else. Quite a while ago this was banned from Nascar. They were using this type of paint to coat the bottom of the INSIDE of their intake manifolds. That was a thermal barrier as well, keeping the fuel and air mixture cooler until it got in the combustion chamber. Thus creating more horsepower. I tried looking this stuff up a while back and could never find it. I don't remember what it was called either. But anyway, try to google it, maybe you'll have better luck than me.

Was it PolyDyn?

http://polydyn.com/intake_manifolds.htm

 

[UpStandingMember]

Was it PolyDyn?

http://polydyn.com/intake_manifolds.htm

I can't remember the name of what I was talking about, but that stuff looks really cool. Too bad they don't have a do-it-yourself application.

Do it and tell us how much it costs!

 

[85_Ranger4x4]

Was it PolyDyn?

http://polydyn.com/intake_manifolds.htm

I think that is for the outside of the intake though.

I don't know it would help me much with heat saturation on the intake, the intake manifold is part of the exhaust manifold.

That glyptal stuff sound very promising, it goes on with a brush so it won't go anywhere but where I put it and if it can stand oil it can surely take gas as well. Most newer tractors have some sort of paint in the inside of engine blocks and transmission cases, I bet it is something similar.

 

[UpStandingMember]

I think that is for the outside of the intake though.

I don't know it would help me much with heat saturation on the intake, the intake manifold is part of the exhaust manifold.

That glyptal stuff sound very promising, it goes on with a brush so it won't go anywhere but where I put it and if it can stand oil it can surely take gas as well. Most newer tractors have some sort of paint in the inside of engine blocks and transmission cases, I bet it is something similar.

I've been thinking about this. I know, it's been keeping me up at nights too! LOL

I think that coating is on the inside as well as the outside. They use different stuff. I know you can't have a glossy smooth finish on the inside because that will make the air and fuel mixture separate, and the fuel with stick to the sides. The motor will run like crap then. The outside could be slick and smooth, but not the inside.

Did you see they also do carbs?

The stuff I'm going to be painting the bottom of my intake will be on the outside. Outside meaning underneath. I figure it'll still act as a thermal barrier, and the oil won't do anything to it.

 

[kunar]

maybe this is too easy but why not just give it a shot of fogging oil when you shut it down? sure, its not a permanent solution but its cheap and easy...

 

[85_Ranger4x4]

I think that coating is on the inside as well as the outside. They use different stuff. I know you can't have a glossy smooth finish on the inside because that will make the air and fuel mixture separate, and the fuel with stick to the sides. The motor will run like crap then. The outside could be slick and smooth, but not the inside.

There is only gas in the bowl, the crusty part near the choke only has air in it, the venturi is in the upper part and only has the throttle plate above it before it goes into the intake manifold.

This is an updraft carb, you guys may not that familar with how they work. I mainly want to coat the bowl and the carb intake tract up to the venturi in the bottom part of the carburator. I wish I would have taken pics before I put it back together... these are with most of the parts removed.

Assembled:

Mounted on the tractor and waiting for me to get new hose clamps. Runs great BTW No matter how you turn the wheels the steering shaft (it is a push/pull setup, it doesn't turn) it is always in the way. You can see the silver throttle lever peeking out on the backside of the intake.

maybe this is too easy but why not just give it a shot of fogging oil when you shut it down? sure, its not a permanent solution but its cheap and easy...

There is nothing really easy about removing the aircleaner/bowl to fog it. The throttle linkage is on the blockside of the carb and is a PITA to get at, there is only 2" of hose between the carb and the aircleaner so you have to take them both off at the same time. The block swells out too much to get at the screws on the back to take the bowl off from the top housing with everything else mounted on the tractor too.