Plug Gap

324 Views 4 Replies 4 Participants Last post by Steve-A, Mar 29, 2010

oakesy2001uk

Discussion Starter · Mar 27, 2010

I have these for when the supercharger goes on, what shall I gap them to?

http://www.mx5parts.co.uk/product_info.php/products_id/236

TDR site thinks .32" so 8mm? http://www.trackdogracing.com/website/upgrade_chart.html

seems a bit wide to me, but I wont argue with those guys

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bert

· #2 · Mar 27, 2010

Its actually 0.032" (32 thousands of an inch) or approx 0.8mm according to the TDR website

Bert

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oakesy2001uk

Discussion Starter · #3 · Mar 28, 2010

bert said:
Its actually 0.032" (32 thousands of an inch) or approx 0.8mm according to the TDR website

Bert

lol, I meant that! 8mm would be a big gap wouldnt it!!

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steelrat

· #4 · Mar 29, 2010

0.032 is pretty common for gap.... unless you have upgrades to the COPs.... where you can run the almost stock gap on the plugs without issue.....

Dave,

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Steve-A

· #5 · Mar 29, 2010

I've had to go down to 0.025" to combat misfire under boost, but that is running ~1bar.

Doesn't seem any worse at cruise for it, maybe ever so slightly lumpier idle.

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