Messed up Big, need major help

P

PikledBeats

New Member
Apr 19, 2010
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Idaho
So I f**cked up something big, I had a perfect cylinder ready to go and went to clean it, everything on here says it safe to use a carb cleaner and then use a little dawn, I did this and the inside now looks like it's instantly rusting. I've been trying to wipe it clean with a little dawn on a shop rag and it isn't pulling any dirt etc, but is instantly turning slightly amber like it is rusting. Please someone tell me there is a way to just clean this thing. I dont want to mess up clearance inside
 
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Damn bro I can't help ya on this one, I had my motor built for me. I too heard hot water and dawn the blow dry with air!
 
No biggie take it to the sink with a brillo pad and some soap n water. Go at an angle with the pad to mimic the cross hatching marks.
This time around either blow it dry immediately with an air compressor or use alot of paper towels to dry it. Spray or wipe it down with some oil and it won't rust again.
 
it could be just tarnishing.. are u sure its rusting? rub some oil into it to protect it bit i doubt its rusting that fast unless its uber humid where u live
 
they will rust that fast..i actually watched one rust from the sink to the garage...but as paulie said no biggie..just oil it as soon as ur done cleaning it
 
you can use some 2000 grit sandpaper its better then brillo....when you are done you have to keep the cylinder oiled. What I did was just a little polish just to stop it from rusting before I put it on the bike
 
Paulie B said:
No biggie take it to the sink with a brillo pad and some soap n water. Go at an angle with the pad to mimic the cross hatching marks.
This time around either blow it dry immediately with an air compressor or use alot of paper towels to dry it. Spray or wipe it down with some oil and it won't rust again.
Click to expand...

thank you, I jumped the gun and thought I was losing my mind, I actually watched it as freek said. It cleaned up and now oiled is not doing it again but man like said I thought I was losing my mind, calmed down now but had never seen anything like it.

Edit: and nice to see all the help, you guys jumped on it and I appreciate it.
 
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I wouldn't mess around with doing anything by hand. You will need the hone marks back for the rings to set right. I would buy a hone and run it for a few seconds and see if it clears up then re-oil it.
 
Yeaaa I'd never use dawn+water but that's just me. Use things like carb cleaner or Berryman B12 or an oil based cleaner....or hell anything without water. The sleeves are metal and will flash rust almost instantly if you use water then they get exposed to air. It's usually minute enough to wipe off with some oil on a rag.
 
i have washed 5 different cylinders with water and soap after rebuilds and porting, even after i bought my 240 i did it, rinsed with water blew it out with my air compressor and oiled it up, i have never had a cylinder flash rust that quick, i can understand overnight, thats new to me.
 
Soap and water is the accepted method in every manual printed for any bike I've owned. You are required to wash your jug after any bore job or port.
Ya carb cleaner can work but it just won't be as thorough, economical, or environmentally friendly then puttin the thing in the sink and workin it with yours hands to get it clean.
 
After I bore and hone a cylinder, I rinse it in mineral spirits. I use a small acid brush inside the ports and a plastic brush inside of the bore while flowing the solvent. I fill the sink with hot water and Dawn dish washing liquid just like I'm going to do dishes. I submerge the cylinder and hit it with the brushes again. I remove the cylinder from it's bath and wipe the bore, in the direction of the hone marks, with a towel and more Dawn. When all of the grit is removed, I coat the cylinder with WD-40 then blow it dry. Last step is carb cleaner inside the ports and another shot of WD inside the cylinder. The cylinder will rust if you blow it dry without some type of lubrication on the sleeve. I would use fine grit steel wool drenched in WD-40 to get rid of the rust and reclean as stated above.
 
I've washed a cylinder to watch it rust on the way out to the garage (about a minute long trip). I took a lint free towel when I got out there and coated it with machine oil and the "tarnish" wiped right off.
 
ok, so now we've proven that a cast iron cylinder can flash rust/tarnish within minutes, and also learned the methods to inhibit this

but what are the cons of this slight discoloration ????
could it act just as cross hatches and help seat the rings ????
and it prolly dissapates within a few minutes of first running

and is this is the same thing that happens during the long winter months sitting in the shed ??? only to get fired up in the spring and ridden with no harm

bottom line is ....is this little discoloration actually worth worryin about ????

i saw sumthin at the dealers called "fogger" i asked the salesman what it was, he said the sled guys use it to prevent this "cylinder rust" during the summer down time
 
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