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Old 01-21-2008 | 02:16 PM
  #117  
chevypower1930
 
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Default RE: Sig 4*40 First time builder... BUILD THREAD!
Hey CJ yes that is the thrust line... on the plans there is a guide that you can put F1 on and mark the thrust line... the prop shaft should be at that thrust line... which means (For most engines) that the top of the motor mounts (where you will bolt the engine) should also be at that thrust line.
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