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Post by Rebel on May 21, 2009 23:54:54 GMT -5
I'll go on the side of oven cleaner too, that stuff will easily remove paint. Carbon is tougher but that's what you need to clean off in an oven. There is a paint stripper I used a few weeks ago that smelled just like an oven cleaner, did the job very well.
I'm familiar with Berryman Chem tool, that is used by a lot of people for light carb cleaning but not good for the removal of thick varnish on inner carb parts and passages. Acetone would do as good a job, now the Berryman parts cleaner might well be the better stuff.
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2strokd
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Post by 2strokd on May 21, 2009 23:56:37 GMT -5
BTW i have a tach update for everyone that is interested. Its turned into a POS. It will just shut off, or reset itself out of nowhere. It worked great until yesterday. It started acting up right before the motor did. I rode today after i put it back together and it did the same crap. Yesterday was just a bad day for Skeedr all around. Im going to call the place a got the tach from tomm. see what they say.
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2strokd
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Post by 2strokd on May 22, 2009 9:22:21 GMT -5
im still running strong enough to wheely down the road with all 49cc,s of it. The reeds, spacer and cage, along with a good piston cleaning, and no cylinder gaskets must have really woke this stock motor up. I didnt have the power to ride a wheelie before. Not that im so impressed that im gonna leave the Polini on the shelve, just surprised thats all
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Post by 90GTVert on May 22, 2009 11:33:51 GMT -5
Nice!
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2strokd
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Post by 2strokd on May 22, 2009 22:21:05 GMT -5
Piston is done, ring were just to cooked in. I tried oven cleaner, still wouldnt work. To top that off, i thought Dr.moto had me hooked up on a new piston until i measured mine and found that its a 46mm piston, and not the 47mm i thought it was. Now im looking for a 46mm piston
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Post by 90GTVert on May 23, 2009 5:56:00 GMT -5
Maybe scooter-attack could help you if you contact them.
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Post by Rebel on May 23, 2009 15:12:32 GMT -5
keep soaking that puppy, you never know just what might break loose.
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2strokd
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Post by 2strokd on May 26, 2009 8:30:50 GMT -5
Still no luck getting the rings off. My piston is pretty clean now, and i cant see anything other than carbon that would be holding them in. The rings arent scored or pinched in by the piston. Today i have all day to work with it so i am thinking i will get nasty with the rings. If they break, they break. A set of rings is cheaper than a piston. If all fails and i cant use the piston, ohh well its just sitting in a coffee can soaking away, not doing the scooter any good anyway . A new piston from Scoot-attack is $60 and im not sure if it even comes with rings, and that not even including shipping . Ive also been thinking about having it bored to a 47mm setup. Finding 47mm pistons, rings etc. is allot easier and cheaper. What do you all think about having it bored? Good, bad idea?
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Post by 90GTVert on May 26, 2009 10:25:09 GMT -5
I'd do as you said and try to get those rings out to replace them if possible. If not, you prob can bore it but you'll want to try and find a piston very similar to what you had. A piston with different characteristics can affect compression and timing. Considering you had to use a spark plug with a mor shallow reach to eliminate detonation, I'd think you are on the edge already. Depending on the angles that your ports come into the cylinder, boring can change the port timing a little as well.
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2strokd
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Post by 2strokd on May 26, 2009 11:50:36 GMT -5
GOOD NEWS ;D After days of soaking and praying i finally managed to ease the rings off. I used a very small 1mm wide flat screwdriver and allot of patience, but they finally came off unhurt . I still have some cleaning to do to the rings and grooves, but i think i will be ok
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2strokd
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Post by 2strokd on May 26, 2009 11:51:48 GMT -5
keep soaking that puppy, you never know just what might break loose. Good advice Rebel . Thanks for telling me to keep soakin
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Post by 90GTVert on May 26, 2009 11:56:20 GMT -5
Free at last!
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2strokd
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Post by 2strokd on May 26, 2009 11:59:59 GMT -5
Now for that new rod end bearing, and a 70cc pipe. When i get that stuff i will be back to 68cc,s or is it 69 lol, whatever 46mm gives ya with stock stroke. Im just happy i got me rings unstuck. The bottom ring was all the way closed, it was tough.
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Post by Rebel on May 26, 2009 12:12:02 GMT -5
Too bad you don't have a spare old ring, I have used broken rings to clean ring groves, works pretty well.
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2strokd
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Post by 2strokd on May 27, 2009 7:46:46 GMT -5
After allot of cleaning i ended getting the rings back on the piston. They felt good as new on my worn out looking piston lol, its my sleeper look. This is what i ended up with.... I got that far and couldnt help but go up and get some oil and fuel so i could put the cylinder back on and give it a shot Sounded good last night. Right when i was buttoning things up for a test ride it started to rain so i havent had a chance for a road test yet. The only thing im kinda worried about is detonation. I am not using a base gasket right now so the compression is probably going to be a bit to high
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