Spark Plug Gaps

Jun 23rd, 2003, 11:18

Does anyone know what the corect spark plug gap should be for a C70 T5. The plugs are Champion EON II.

The Haynes manual says 0.7mm, haowever i had seen other sources recommend 0.32mm

Help Please

Jun 27th, 2003, 16:36

Sounds more like a confusion beween metric and imperial to me,
0.7mm is 0.028inches
0.8mm is 0.032inches

I've never seen a gap as low as 0.32mm that would be 0.013 inches or there abouts and thats much too small.

Anyway, 0.7 or 0.8mm, follow the book or recommendation from plug manufacturer, in car shop they have a list of gaps for specific plugs

Keith

markas · Jun 29th, 2003, 21:29

Hi Guys,

the preset values are fine, there is no need to adjust them and i have never done my in the last ten years!

mark

Dan F · Jun 30th, 2003, 11:24

Hi.

The plugs you buy will invariably be OK at the preset gap, however, the size of the plug gap in a turbo car is far more crucial (to prevent misfires and pinking etc) than in a N/A model. Therefore anyone with a turbo model would be best advised to make sure all plugs have the same (and the correct) gap.

I wonder if they check the gaps at the dealers when they put the plugs in? Or are they preset to the correct gap for the particular model of car if you use Volvo plugs?

Cheers,
Dan.

liuleichan · Jun 30th, 2003, 12:33

>Hi.
>
>The plugs you buy will invariably be OK at the preset gap,
>however, the size of the plug gap in a turbo car is far more
>crucial (to prevent misfires and pinking etc) than in a N/A
>model. Therefore anyone with a turbo model would be best
>advised to make sure all plugs have the same (and the correct)
>gap.
>
>I wonder if they check the gaps at the dealers when they put
>the plugs in? Or are they preset to the correct gap for the
>particular model of car if you use Volvo plugs?

Don't they use multi-electrode plugs?

And if so, aren't these already set correctly and don't need adjusting?

Lei Chan

markas · Jun 30th, 2003, 14:22

exactly, the are preset at production and no adjustment is needed.
"does exactly what it says in the packet"

mark

Dan F · Jul 1st, 2003, 19:29

Multi electrode plugs are not recommended in turbocharged cars.

Mind you I would always check the gaps of plugs out of the packet becuase they are never all the same/correct.

Dan.

Jun 23rd, 2003, 11:18	#1
dongagon Guest Location:	Spark Plug Gaps Does anyone know what the corect spark plug gap should be for a C70 T5. The plugs are Champion EON II. The Haynes manual says 0.7mm, haowever i had seen other sources recommend 0.32mm Help Please

Jun 27th, 2003, 16:36	#2
Keith Marshall Guest Location:	RE: Spark Plug Gaps Sounds more like a confusion beween metric and imperial to me, 0.7mm is 0.028inches 0.8mm is 0.032inches I've never seen a gap as low as 0.32mm that would be 0.013 inches or there abouts and thats much too small. Anyway, 0.7 or 0.8mm, follow the book or recommendation from plug manufacturer, in car shop they have a list of gaps for specific plugs Keith

Jun 29th, 2003, 21:29	#3
markas VOC Member Last Online: Mar 7th, 2024 14:11 Join Date: Dec 2002 Location: Stafford	RE: Spark Plug Gaps Hi Guys, the preset values are fine, there is no need to adjust them and i have never done my in the last ten years! mark __________________ Polishing Mark VOC 850 class winner 1998 to 2007 Rejoined 2022

Jun 30th, 2003, 11:24	#4
Dan F Premier Member Last Online: Apr 7th, 2008 13:05 Join Date: Dec 2001 Location: Worcs	RE: Spark Plug Gaps Hi. The plugs you buy will invariably be OK at the preset gap, however, the size of the plug gap in a turbo car is far more crucial (to prevent misfires and pinking etc) than in a N/A model. Therefore anyone with a turbo model would be best advised to make sure all plugs have the same (and the correct) gap. I wonder if they check the gaps at the dealers when they put the plugs in? Or are they preset to the correct gap for the particular model of car if you use Volvo plugs? Cheers, Dan.

Jun 30th, 2003, 12:33	#5
liuleichan Premier Member Last Online: Apr 17th, 2019 22:01 Join Date: Dec 2001 Location: .	RE: Spark Plug Gaps >Hi. > >The plugs you buy will invariably be OK at the preset gap, >however, the size of the plug gap in a turbo car is far more >crucial (to prevent misfires and pinking etc) than in a N/A >model. Therefore anyone with a turbo model would be best >advised to make sure all plugs have the same (and the correct) >gap. > >I wonder if they check the gaps at the dealers when they put >the plugs in? Or are they preset to the correct gap for the >particular model of car if you use Volvo plugs? Don't they use multi-electrode plugs? And if so, aren't these already set correctly and don't need adjusting? Lei Chan

Jun 30th, 2003, 14:22	#6
markas VOC Member Last Online: Mar 7th, 2024 14:11 Join Date: Dec 2002 Location: Stafford	RE: Spark Plug Gaps exactly, the are preset at production and no adjustment is needed. "does exactly what it says in the packet" mark __________________ Polishing Mark VOC 850 class winner 1998 to 2007 Rejoined 2022

Jul 1st, 2003, 19:29	#7
Dan F Premier Member Last Online: Apr 7th, 2008 13:05 Join Date: Dec 2001 Location: Worcs	RE: Spark Plug Gaps Multi electrode plugs are not recommended in turbocharged cars. Mind you I would always check the gaps of plugs out of the packet becuase they are never all the same/correct. Dan.

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