Question:

Can you help?outboard motor question?

by Guest33976  |  earlier

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I have a 1978 mercury thinderbolt igntion 115 hp. The compression is 125. Is this good compression??

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  1. 125 is good, are all cylinders equal within 10%


  2. 125 on a 1978 is great, as long as all the cylinders are within 5% or 7% of each other.

  3. It is very good.

  4. yes, in all the cylinders?

  5. Yep!   125 is good. Smile!
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