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Old 05-12-2010 | 06:15 PM
  #3639  
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wingracer
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Originally Posted by CurveTracer
OS turbo plugs have a different taper than Nova Rossi/RB turbo plugs. Installing OS turbo plugs in a cylinder head designed for NR/RB pulgs will create sealing problems. Merlin has a plug that is designed to both applications.
This is true but oddly enough, it mainly seems to be a problem the other way around. I have found that most any plug will seal fine in a Nova motor but Nova plugs WILL leak in an OS. It's strange but true.

Also, I have had really good luck with Picco plugs in the past but haven't tried them in many years.
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