Surface rust on cylinder.

[Lion]

I have a spare cylinder for my rm which has been sitting around for some time. It now has formed some surface rust down the bore. Can I use one of those scotch pads to clean it up or will I have to get it honed? It is very minor.

[Danger]

Yeah just clean it up with the scotch brite and some soap and water, dry it and spray it with some WD40 until your ready to use it. Iron oxide makes the metal tough. When rubbing it with the scotch brite, do so in a cross hatch pattern, the same way as a hone would do.

[umka]

does the Rm not have a Nikesel bore??

[Lion]

Ok thanks will do that today. I think this cylinder has been resleeved hence no nikasel bore

[Lion]

ok got it all cleaned up as best as i could. there is still some minor surface rust left though. shall I get it honed ??

[cheese]

Is that the original or the spare I gave you? They were both not sleeved i thought.

Boss engineering in Wanganui quoted me some good prices to sleeve a cyclinder.

[Lion]

was the spare one you gave me. the bore looks pretty mint on it tho so i dont think it needs a sleeve. how much will a hone cost me

[cheese]

No Idea sorry, ring around some of teh local bike shops and maybe try bruin engineering?

[Lion]

ok sweet as. oh yeah the rm is going great. has been real reliable and always starts first kick every time. just have to do some re jetting tho as its running rich

[cheese]

MAybe try running the oil at 32:1 or something? that is the same issues that rudecop is having.

[Lion]

yeah it always fouls plugs, and is kind of feeling a bit gutless on top end. was the jetting all sweet when u owned it?

[cheese]

I thought is was ok. I had it chew the occasional plug, but nothing too bad.

I had the few issues towards the end, but I think that alot of that was related to the weak spark issue that you sorted.

What oil are you running? and what premix are you running. I think that you are having similar issues to rudecopp with oil ratios.

Thought you sorted the top end with the power valve actuator bearing??? Have you got the washer fitted to the cylinder and is that oring on the pipe that goes into the cylinder?

[xwhatsit]

Boss engineering in Wanganui quoted me some good prices to sleeve a cyclinder.

What sort of price?

[cheese]

I think around $190 or so inc the sleeve.

[Lion]

I thought is was ok. I had it chew the occasional plug, but nothing too bad.

I had the few issues towards the end, but I think that alot of that was related to the weak spark issue that you sorted.

What oil are you running? and what premix are you running. I think that you are having similar issues to rudecopp with oil ratios.

Thought you sorted the top end with the power valve actuator bearing??? Have you got the washer fitted to the cylinder and is that oring on the pipe that goes into the cylinder?

Yeah I fixed the powervalve and it improved the top end situation. I will try some different ratios this weekend and get back to you. Yep there is 2 washers i think and the oring