[NSRCA-discussion] Engine problem

[jivey61 at bellsouth.net]

John
 I would try 2 washers on the plug and be cautious when you tighten. Clarence Lee is an expert on heli-coils. Send him the head if this doesnt work. He does the 'Engine Clinic'.. for Model Airplane News.

Jim Ivey
  ----- Original Message ----- 
  From: John Ferrell 
  To: NSRCA Mailing List 
  Sent: Saturday, August 26, 2006 10:44 AM
  Subject: [NSRCA-discussion] Engine problem


  General engine problem

  I have a YS91AC that runs fine but leaks fuel around the glow plug.

  It appears that the plug is not square to the head casting so the 

  copper gasket does not completely seal the joint. 

   

  Before I take the problem to my machinist son-in-law are there 

  any suggestions as to how I might resolve the problem?

   

  History:

  Bought engine at deep discount with damaged threads and had 

  Clarence Lee install helicoil insert. The first owner was full scale 

  engine mechanic so I expect the problem was from the factory.

   

  New YS110 is listed at $329, new head-cylinder/sleeve about $150.

  My personal threshold is not to spend more than 1/3 the price of a 

  new replacement in repair parts. 

  Ideas?

   

  John Ferrell    W8CCW
  "My Competition is not my enemy"
  http://DixieNC.US



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