my cylinder fried!:P a little hlp pls!!

Cy-Tuning

PiTBuLL
last night my polini fried can you tell me pls what is best?
Speedfight2 lc!

1. To buy a new mhr replica
2. To buy a new piston and make my cylinder and piston 50mm from 47mm

can i put single ring piston in my polini cast iron?
 
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You can get someone to restore (reflex) the cylinder if it is badly scorched but if not don't worry about it, and also get a new piston and rings. If it is an aluminum cylinder ask someone if it is alright to use a really light sandpaper to get rid of light scorches, if they are present. It is also not a very good idea to use a piston or any parts of that matter in an engine that it is not originally used for. But if you are just desperate in getting the bike just running for now, you can try and see if it will fit, it shouldn't cause no damage as long as it fits properly, though the bike may run differently.
 
Just to add on about the cylinder, maybe you should just try a good all metal or Aluminum polish to get rid of any scorches. I don't really know if it will work perfectly with really bad scorches, but I am sure it will work with not so bad ones. I am telling you this since it is an Aluminum cylinder, and it may not be a good idea to reflex it or use sandpaper, BUT you can always ask a qualified mechanic.
 
like he said try it
it more than likely wont do any damage if its correct size

it jsut might have poor compression and be down on power
 
Cy-Tuning said:
last night my polini fried can you tell me pls what is best?
Speedfight2 lc!

1. To buy a new mhr replica
2. To buy a new piston and make my cylinder and piston 50mm from 47mm

can i put single ring piston in my polini cast iron?
did u seize a cast iron cilindor kit or aluminum??? they are all talking about aluminum scorches..if it is cast iron then flexing the cilinder is fine but u loose power...or u can buy a oversized piston and rebore the cilinder to fit that piston... if u had a picture, that would really help us diagnose your problem...
 
Yea, get rit of that Poloony junk, it doesn't perform anyway :)
Better get the MetraKit if you want cast iron, or the MHR Rep if you want performance...
 
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