Spark Plug for Supercharged Engine
#11
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BTW: Love that 29 Fountain!!
#12
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NGK Spark Plugs USA has a tech support for just the questions you are asking : 1-877-473-6767
They are located at 46929 Magellan Drive,Wixom,MI 48393.Ask for Russell Senior he is a application engineer for the company.
I would also suggest that you look into Iridium or Platinum-type plugs - they are fine wire plugs and resist gap erosion and come factory set at the gap .They also do not suggest changing the gap set at the factory. If you are going to change the plugs make sure the plugs are torqued with a proper wrench and use dielectric grease on the terminal where the spark-plug boot connects to the plug and NEVER use a lubricant on the threads because it changes the torgue values......Good luck with those new engines.
Jim
They are located at 46929 Magellan Drive,Wixom,MI 48393.Ask for Russell Senior he is a application engineer for the company.
I would also suggest that you look into Iridium or Platinum-type plugs - they are fine wire plugs and resist gap erosion and come factory set at the gap .They also do not suggest changing the gap set at the factory. If you are going to change the plugs make sure the plugs are torqued with a proper wrench and use dielectric grease on the terminal where the spark-plug boot connects to the plug and NEVER use a lubricant on the threads because it changes the torgue values......Good luck with those new engines.
Jim
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NGK Spark Plugs USA has a tech support for just the questions you are asking : 1-877-473-6767
They are located at 46929 Magellan Drive,Wixom,MI 48393.Ask for Russell Senior he is a application engineer for the company.
I would also suggest that you look into Iridium or Platinum-type plugs - they are fine wire plugs and resist gap erosion and come factory set at the gap .They also do not suggest changing the gap set at the factory. If you are going to change the plugs make sure the plugs are torqued with a proper wrench and use dielectric grease on the terminal where the spark-plug boot connects to the plug and NEVER use a lubricant on the threads because it changes the torgue values......Good luck with those new engines.
Jim
They are located at 46929 Magellan Drive,Wixom,MI 48393.Ask for Russell Senior he is a application engineer for the company.
I would also suggest that you look into Iridium or Platinum-type plugs - they are fine wire plugs and resist gap erosion and come factory set at the gap .They also do not suggest changing the gap set at the factory. If you are going to change the plugs make sure the plugs are torqued with a proper wrench and use dielectric grease on the terminal where the spark-plug boot connects to the plug and NEVER use a lubricant on the threads because it changes the torgue values......Good luck with those new engines.
Jim
All great info. I really appreciate everyone's responses.
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FYI, mercury used the delco MR41T in their SC 600 and 525SC, and 800sc engines. Worked good for them too.
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That looks like my old fountain! If it is, we had alot of fun in that boat. For some reason I cant see the picture any larger but the hatch looks familiar. We had twin 502s with 250B&M and ran 93mph back in 1999.