Single Turbo RX-7's Questions about all aspects of single turbo setups.

Plugs to use on e85? tuning on sunday

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Old Aug 15, 2014 | 12:57 PM
  #26  
04G35S's Avatar
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Are you guys running the autolite 3932x for all four plugs?
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Old Aug 19, 2014 | 08:37 AM
  #27  
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Originally Posted by Shainiac
Does anyone know the AR3932X equivalent in an 8 and 9 head code?
Also Curious what the part number would be in a 9 heat range if anyone has that info available.
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Old Aug 19, 2014 | 10:06 AM
  #28  
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AR3934X is 8
AR3933X is 9
AR3932X is 10
AR3931X is 11
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Old Aug 20, 2014 | 09:09 AM
  #29  
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Originally Posted by howard coleman
AR3934X is 8
AR3933X is 9
AR3932X is 10
AR3931X is 11
Great info! Almost half the cost of the stock NGK's
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Old Aug 27, 2014 | 11:35 AM
  #30  
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Originally Posted by howard coleman
AR3934X is 8
AR3933X is 9
AR3932X is 10
AR3931X is 11
I noticed that these are non-resistor plugs. Are they still okay to run with stock leading and trailing coils (FC) and not COP?
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Old Aug 27, 2014 | 09:53 PM
  #31  
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I would still use the R7420-105 in a heart beat.
Nothing else goes in any of the engines we do.
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