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Spark Plug Gapping (GR)
Posted: Fri Jun 17, 2011 5:09 pm
by -Nighthawk-
Hi guys,
Just reading up for when changing my spark plugs on an FTO GR. What is the recommend spark plug gap?
In the manual I think it says 1.0mm-1.1mm which from what I read, is way too wide.
I read up and some guy suggested 0.6mm for better performance. My new plugs are set to 0.9mm, should I just leave them at that?
Cheers
Re: Spark Plug Gapping (GR)
Posted: Fri Jun 17, 2011 9:46 pm
by silverGPX
Last time i asked this question for my GPX i was told that just put them in as they come. Check that they are all at the same gap though incase the box was dropped etc.
Re: Spark Plug Gapping (GR)
Posted: Fri Jun 17, 2011 9:58 pm
by Bennoz
Leave them as is. Gapping plugs is the realm of the old car owner & tuners.
Re: Spark Plug Gapping (GR)
Posted: Fri Jun 17, 2011 11:21 pm
by bass_twitch
Or buy irridiums next time... No gapping required
Re: Spark Plug Gapping (GR)
Posted: Sat Jun 18, 2011 4:11 pm
by -Nighthawk-
Yep I got Denso Iridium IK20s
Re: Spark Plug Gapping (GR)
Posted: Sat Jun 18, 2011 6:20 pm
by bass_twitch
-Nighthawk- wrote:Yep I got Denso Iridium IK20s
Well then why are you bothering asking about gapping then? haha
Re: Spark Plug Gapping (GR)
Posted: Sat Jun 18, 2011 6:38 pm
by evoman
Good choice. Where did you get the Denso's from - and how much were they?
Not sure why you think you have a .9mm one though? Denso recommends 1.1mm gap.
http://www.denso.com.au/sparkplug/make/ ... shi_import
According to their naming convention guide an IK20 would be a 1.1mm gap unless specifically requested to be a .8mm gap.
http://www.globaldenso.com/en/products/ ... /spec.html
Re: Spark Plug Gapping (GR)
Posted: Sat Jun 18, 2011 7:15 pm
by -Nighthawk-
I got them from Camskill for about $65 less delivery.
They were specified to be non-mivec:
http://camskill.co.uk/products.php?plid=m3b0s9p450
Should I be making the gap larger to 1.1?
Re: Spark Plug Gapping (GR)
Posted: Sat Jun 18, 2011 7:55 pm
by evoman
I don't think it is recommended you gap iridiums. More likely you snap them than anything from what I have heard.
What makes you think you have .9mm gap though?
Is that just what you think from measuring yourself? Are there any product codes on the plugs?
Re: Spark Plug Gapping (GR)
Posted: Sat Jun 18, 2011 8:41 pm
by -Nighthawk-
Actually just remeasured. The 1.00mm fits in the space so I would say they are pre-gapped to 1.1 (the largest I have on the measurements are 1.0mm)
Re: Spark Plug Gapping (GR)
Posted: Sat Jun 18, 2011 9:04 pm
by evoman
Though so. As the site says Denso spec for the IK20 is 1.1mm.
They should be fine
I noticed a nice improvement in economy with my Denso's so hope you get the same.
Re: Spark Plug Gapping (GR)
Posted: Sat Jun 18, 2011 9:10 pm
by -Nighthawk-
Hopefully, combined with some new magneto ignition leads 8.5mm it should go well
None of these have changed since I got the car, which is 2 years ago. So I think they are well overdue, I'll post a picture of old vs new.
Re: Spark Plug Gapping (GR)
Posted: Fri Jun 24, 2011 5:38 am
by payaya
I went 0.8 definatly ran better.