Hole on the Cylinder Body

Discussion in 'Motorized Bicycle General Discussion' started by tmcgradyr01, May 3, 2010.

  1. tmcgradyr01

    tmcgradyr01 New Member

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    I didn't realize I had a hole on my cylinder body (about 1/4 in diameter) until I tried to start up my engine. The engine wouldn't start and I felt lot of air coming out from the left side of the engine.

    Is there anyway to fix this air leak without having to replace the whole cylinder body? Any kind of silicone or other adhesives that might be able to fix this?
     
  2. DOC BOLM

    DOC BOLM New Member

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    Is it new.
     
  3. metalliatic

    metalliatic New Member

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    nothing will hold the pressure that it needs. just buy a new cylander for $12.95 from piratecycles.com. or buy a whole new engine from boygofast on ebay for $55.
     
  4. corgi1

    corgi1 New Member

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    Does one of the neighbors have a 22?
     
  5. mapbike

    mapbike Active Member

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    Oh My........! that will quite things down a bit wont it.! LOL
     
  6. meowy84

    meowy84 New Member

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    Don't worry about it. It's nothing. I've seen McGyver fix bigger holes than that with bubble gum. rotfl

    Seriously though, a 1/4" hole? WOW! How did that happen? What are you running nitrous in there? LOL

    If engine is new and it's a manufacturing defect get the engine replaced under warranty. If used you will need a new cylinder like metalliatic said. BUT, remember though that the hole might be just the tip of the iceberg. If you blew a hole that big in the cylinder a new cylinder might be the least of your worries. Maybe you over-revved it and your connecting rod broke and poked that hole. In that case add the con rod to your list and possibly a new piston too if it got damaged in the commotion. There might also be some crank damage and even a cracked crankcase from the force of the impact. If it needs all or even some of those in addition to the cylinder itself you're probably better off ($$$ ahead) buying another engine.

    However you did say that you can feel air coming in and out of the cylinder when you try to start your bike right? In that case the piston/rod assembly might be still in one piece. But without disassembling the engine and looking at all the parts though it's hard to tell.
     
    #6 meowy84, May 3, 2010
    Last edited: May 3, 2010
  7. Cabinfever1977

    Cabinfever1977 New Member

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    If its a new engine call the person you bought it from and see if they will replace it.

    Im not sure if it is able to be patched, but a new cylinder doesn't cost much and should be easy enough to replace.

    If it is a old engine you might have more damage than just a hole and may need a new engine.
     
  8. tmcgradyr01

    tmcgradyr01 New Member

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    What happened with my original cylinder body was the threaded holes used to attach exhaust went bad so I replaced it with a new cylinder body. During the installation, I didn't set the piston rings in its right place so everything got kinda jammed in. I think the cylinder might have blew a hole when I tried to pedal. I don't think there's any damage to anything besides the cylinder, so I'm just gonna go ahead and order the cylinder part. Thanks guys~
     
  9. Cabinfever1977

    Cabinfever1977 New Member

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    And take your time this time.
     

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