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I have a 200 blaster the cylinder diameter is 66.45 what size piston and rings do i need to rebuild it

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 3567 Answers

SOURCE: mass flooding piston cylinder

This sounds to me like a carb float being stuck open. Turn off the gas and drain the carb. Next, turn the gas back on and sharply tap the float bowl with the plastic handle of a screwdriver as the fuel bowl refills. The goal here is to vibrate the float to free it up. If doing this process a couple of times does not free the float I would remove the carb and clean it with a spray carb cleaner. Be sure main jet and float needle are clear. Clean the air filter then re-mount carb. Next Remove the water trap bowl at the bottom of the petcock, (gas valve). Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ).
Install an inline fuel filter. Turn the gas on, wait a moment for the float bowl to fill with gas then give it a try.

Please rate this solution. Thanks!

Posted on Mar 29, 2009

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SOURCE: bore size

The cylinder bore is just that > the bore size of the cylinder. The piston clearance should be 0.0015 to 0.003. Anything more than .005 and the piston is too loose.

Posted on Apr 17, 2009

rockitman187
  • 2559 Answers

SOURCE: max size of cylinder

The biggest bore would be 1mm over.The standard bore on that bike is 65.0mm
so you could bore up to 66mm and to be a 900cc you would need a bore size of 68.5 mm
So your answers

  1. Yes, it can be bored
  2. No,Not to a 900cc
  3. Piston size is 66mm (making it roughly an 843cc)
I Hope this has answered all your questions,But please feel free to ask any more if needed.

Please take time to rate this fixya

Posted on May 14, 2009

  • 66 Answers

SOURCE: We need to order a new piston and rings kit for a

take your cylinder to a mechanic and have them measure it. If you're using Weiseco forged pistons you could use a 66.50 but the factory tolorance is .003 so you are right on the edge of needing to have the cylinder re-bored. Weiseco pistons are set for the size of the bore and then they compensate for the tolorances. Don't forget that you will loose a little when you have it honed too.

Posted on Jul 22, 2009

dmsr63
  • 2050 Answers

SOURCE: having trouble with my 93 yamaha 200 blaster how

You should get a good manual. You will need it for specs anyways. It will give you tolerances that you will need to measure to verify if your piston, rings, and cylinder is still usable. I recommend the factory one, but clymer and hayes also make them.

Posted on Sep 12, 2009

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http://cgi.ebay.com/ebaymotors/Yamaha-Blaster-040-Platinum-Piston-Engine-Rebuild-Kit-_W0QQcmdZViewItemQQhashZitem1c1ad757dbQQitemZ120709404635QQptZMotorsQ5fATVQ5fPartsQ5fAccessories

The crankshaft is also lubricated by the oil in the fuel. There is a possibility that the crankshaft is also toast due to lack of lubrication. You will have to tear the engine down (top end) to verify the damage. you could remove the exhaust and look into the exhaust port to view the condition of the piston.

You may be able to find a used engine at a reasonable cost from the internet. Google search.

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Please rate this solution. Thanks garethholleb!

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