Webra 145/160, are parts interchangable?

[Keith Black]

Boy you got dat right Bob! For the price of the AAR cylinder, piston and ring I could almost buy a complete OS 160!  

After learning the disturbing news of the cost of replacement parts I just rebuilt the engine using the parts I have on hand. I ran it on the bench today and it's running great, no need for buying the replacement parts. Sure, I'm an ounce heavier, but that would be one VERY EXPENSIVE ounce! I'll just make this my backup engine.

Keith Black

----- Original Message ----- 
  From: Bob Pastorello 
  To: discussion at nsrca.org 
  Sent: Monday, June 14, 2004 5:24 PM
  Subject: Re: Webra 145/160, are parts interchangable?


  Buy an OS 1.60.... 
  :-)

  (couldn't resist, Keith)

  Bob Pastorello
  rcaerobob at cox.net
  www.rcaerobats.net


    ----- Original Message ----- 
    From: Keith Black 
    To: discussion at nsrca.org 
    Sent: Monday, June 14, 2004 2:05 PM
    Subject: Webra 145/160, are parts interchangable?


    I have an older Bully/Webra that has the steel sleeve and about 175 flights on it. To save weight and give the engine a "tune-up" I was considering purchasing one of the AAR cylinder liners and a new ring. I went to the Horizon web site and found that the AAR cylinder liner alone for the 145 is $153, and the cylinder/piston/ring assembly is $216. However, for the Webra 160 the AAR cylinder/piston/ring assembly is only $146, that's less than just the cylinder for the Webra 145.

    So my questions are:

    1. Is it possible to simply swap out just the cylinder/piston/ring assembly in the 145 with the ones from the 160, or is it necessary to also swap out other components such as the connecting rod and the crank?

    2. If this swap is possible, and I essentially upgrade to the 160, will it run as well as the 145 did without the MC carb?

    Thanks,
    Keith Black
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