Rennlist - Porsche Discussion Forums - spark plug gap

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Noahs944

06-12-2018 01:45 AM

spark plug gap - Bosch wr7

What are you cats gaping wr7 iridium plugs at for a relatively stock 951 engine?

steven74

06-12-2018 08:10 AM

A gap of 0.030” +/- 0.002” is recommended. I would be careful gapping an iridium plug due to the reduced tip size. Make sure to bend the electrode strap and not wedge the tool between the electrode and tip. My guess would be they are probably already gapped at about an optimum size.

Noahs944

06-12-2018 09:22 AM

Thank you Steven! I'll double-check tonight. :)
Is this 951 spec or is it a Bosch's spec?

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