XJ700 MAXIM X cylinder jugs

Anyone know what the best way to powder coat the cylinder jugs on a 1986 Maxim X? I have already sand blasted them and I have an idea but I am not sure if it will work. I would like to get some ideas/advice if anyone has done this or has any thoughts by all means throw them out.

 

Tape/mask any mating surface for block, head, water passages, cam chain tensioner, etc.....
take the cyl to a powder coater and tell them what color you want it.

Dave Fox

 

Well I have my own powder coating kit and oven. Is that what youd do? Take it to someone else?

 

ok this is going to take sometime to explain. The first question is what type of system do you have. is it a variable amp. system or a single. you will use high temp tape Link follows. ( http://www.eastwood.com/high-temp-blue- ... -tape.html ) this tape will withstand the temps needed to bake. you are going to make sure you only shoot the min powder needed. If you don't cooling of cylinder will be compromised a little bit. But back to the steps. First prep. sand blasting. you have completed. you have to wash the item to remove all sand that may be stuck in small spots. you are going to have to prebake the it item because it is make of aluminum. Aluminum absorbs oil so when it is heated the oil is released from the cylinder head. When it is baked and then coated you get a better final product (this is only used for aluminum) the steps are easy just tape off all area that have mating surfaces and the spray close to get the deep sections. Then back off to about 12" to evenly get the rest. bake at the temp and time the directed. let fully cool and then remove tape. that is all there is do powder coating aluminum.

 

yup, that's what I'd do. I have a PC gun but no oven and no experience yet, either.

dave

 

Hmm. My main concern is having the sleeves slip out of the jugs in the oven. How does this sound: after I PC the jugs, I place them upside down on a sheet of steel on the oven rack.That should keep the sleeves from moving right?

 

Thanks wrench just read your reply I will try that. As far as washing the parts, degreaser or soap and water?

 

I don't think the PC oven is gonna get THAT hot!

Dave F

 

Personally, I would think you would start with a degreaser wash and then follow that up with an acid wash - phosphoric maybe? Use some concrete etcher and thin it a bit?

 

That is what I would think. Instead of acid do you think acetone would work?

 

They both do different things. I don't know which would be better. With the acid wash, phosphoric acid in particular, it will react in a beneficial way with any rust on the surface which might be present although to small to identify. It will form a protective seal over the rust after neutralizing it. To be clear - are you using some sort of base coat/primer under the paint or are you looking to simply slap some paint on and go?

 

He was asking about powdercoating.

 

Yes? And? I don't know the details of that. Do you not seal or prime when doing powder coating?

 

not that I know of.

Dave

 

how hot do cylinders get, how hot can powder coat get?

 

Yes plate of steel will be fine. I would do it with the steel because you have to get it up to min of 375. So support the sleeves. Washing with dawn and hot water or a good hot degreaser will work. Then rince well and let dry. Could put in oven to speed up the drying. Just make sure that you preheat. And monitor make sure you lat bake so that the entire piece heat up to curing temp for the time noted. If you have any more question please ask I will help out ad much as I can

Wrench26

 

I found this one Wikihow.com

1
Determine the type of material you are going to powdercoat and then select a suitable powder for the finish. Powdercoating is done with thermoplastic or thermoset polymer powder, and these materials are formulated for bonding with different base metals to give the best results.

2
Clean the base metal thoroughly. Using bead or abrasive blasting on hard metal, such as cast iron or steel, will remove mill and rust scale, dirt and foreign materials. Chemical solvent cleaning will remove any grease, oil, or paint, and light sanding can be done to finish preparing the surface. Aluminum, magnesium, and other soft alloy metals can be solvent cleaned and wire brushed, or sanded if needed.
3
Apply the powder to the object to be powder coated. This is done using a "gun" or compressed air sprayer which electrostatically charges the powder material so that it sticks to the grounded base metal object receiving the coating. These guns are available from various suppliers, and cost as little as $100. For experimental purposes, you can apply the powder to a flat metal surface by dusting it directly on, and spreading it to a thin, even layer.
4
Cure the metal at a temperature appropriate for the powder material you use. A conventional oven is suitable for this purpose if the metal is small enough to fit, otherwise, an infrared heat lamp or other flameless heat source needs to be used. Normally, the object is heated to 350 to 375 degrees F. for about 10 to 15 minutes, and allowed to cool.

 

Just a little info on me I did powder coating for about 5 years with my dads company backyard powder coating out of new Milford, pa. I have a lot of contact in the industry so please ask and if I don't know will get the answers for you.

 

I may take you up on that at some point ... I have been wanting to do some powder coating and the gas tank for my Maxim-X really needs a decent paint job.

One question: With powdercoating, is there any type of clear-coating you should do or just leave it alone?

 

Hello colleagues, Interested if anyone knows how to do because it gives me a carburettor fuel 6.5 liters per 100 km.Stava vapros for Yamaha Xj 400 Special ... Thank you!

 

No just leave it alone. There is only a few a few that use a top coat. They are two and three stage products, psyco lime and candy colors alone with chromed. The last kind is Metallica they need a protective coating. But besides there is no reason to. You can also powder coat your tank. All you need to do is flush out your tank and you can do that if you would want to. look at my fender that, is powder coated in two steps. Any more questions please ask

 

Thanks Wrench, really appreciate it.

 

go down to "to coat or not to coat"
link

 

Polock, from what I see there, it is addressing the question of whether or not to powder-coat. My question was whether or not one used a clear-coat on top of the powder coat. Clear coats can a) filter a lot of UV, slowing paint fade dramatically, b) provide additional chip resistance, and c) provide chemical resistance from things like gas overflows ... Some colors/top-coats require the clear coat, some can't have it, and some don't seem to care either way. At least, that is what I remember, but it has been nigh 20years since my jobber training and dealing with automotive paint info.

 

Update: I have a fried who had an old 500 dirt bike cylinder thaqt he was not going to use so I asked if I could test it in the oven. The results... well I will show you.