[NSRCA-discussion] Engine problem

[Nat Penton]

Ron
You are right about glow plug threads being 1/4 - 32. Its ben so long since I messed with the nasty things. Guess I'll have to cut my fees.        Nat
  ----- Original Message ----- 
  From: Ron Van Putte 
  To: NSRCA Mailing List 
  Sent: Saturday, August 26, 2006 8:13 PM
  Subject: Re: [NSRCA-discussion] Engine problem




  On Aug 26, 2006, at 7:55 PM, <jivey61 at bellsouth.net> wrote:


    Nat
     Isn't the glow plug a 10-28, not a 10-32??????


  Actually, I think it's neither.  I think that glow plug threads are 1/4-32.


  Ron Van Putte

      ----- Original Message ----- 
      From: Nat Penton 
      To: NSRCA Mailing List 
      Sent: Saturday, August 26, 2006 6:31 PM
      Subject: Re: [NSRCA-discussion] Engine problem


      MattK
      You have just pointed out the easy way to square up the head where the glow plug seats. Take a headless 10-32 bolt and screw into the glow openning from the bottom. Use a lock nut if possible. Chuck the bolt in the lathe and cut the glo washer seat. Who do I bill for this ?   
        ----- Original Message ----- 
        From: Rcmaster199 at aol.com 
        To: nsrca-discussion at lists.nsrca.org 
        Sent: Saturday, August 26, 2006 2:05 PM
        Subject: Re: [NSRCA-discussion] Engine problem


        Are there end mill bits available with a square central locating shoulder built in? Seems that may be the easiet way to get what Earl suggests. Another two step approach might be to use drill rod that just fits the hole as the locator first, locking the head down in the fixture, then switching to the bit and touching the surface to square.

        MattK

        In a message dated 8/26/2006 1:49:06 PM Eastern Standard Time, johnferrell at earthlink.net writes:
          I hate to bug Clarence with the problem. Since the engine runs well the only real problem is it slobbers on the airplane. 

          I have a Lathe and Mill in the shop. Set up will be tricky, the plug is pretty deeply recessed. The risk to the threads by using a pilot rod in the hole is high.

          I believe I will anneal a plug washer and try a little of the liquid gasket goo. If that don't solve the problem I will just accept the mess. 

          John Ferrell    W8CCW
          "My Competition is not my enemy"
          http://dixienc.us/

            ----- Original Message ----- 
            From: Earl Haury 
            To: NSRCA Mailing List 
            Sent: Saturday, August 26, 2006 11:44 AM
            Subject: Re: [NSRCA-discussion] Engine problem


            John

            Assuming that the problem is lack of perpendicularity between the threaded hole and the gasket surface - find a "friend" that will set the thing up in a mill aligned on the threaded hole, then touch the gasket surface with a mill to square. (You might give Clarence a call also - unusual that he would not catch this.)

            Earl



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