HR9DC Spark Plugs gap

[megatrack]

The HR9DC (H9DCO) spark plugs come at .036 from bosch. If I understand it ok I'd have to regap them to .032 Am I right?

Thanks AJ

[jhodg5ck]

If those are for your 300 I would Not install them.. The extra resistance provided via the R in your plug will exceed MB's recommended level which according to them can cause damage to your ignition componentry. Never mind that your spark output will be diminished.

Also, I typically take them a bit fatter..unless your car is burning some oil then tighter is the way to go and .32 should be fine.

Jonathan