Steelies Posted November 2, 2012 Share Posted November 2, 2012 hey yall. spark plugs current boggle is: i cant find a hotter plug to fit my villiers motor. they take AB6 or D16 standard, but it's a big old plug and no one stocks anything hotter. something like D17/18 or AB5 would be the go. then i realised i dont know much about plugs. can you make a spark hotter with gap adjustment? repco, bnt, local mower shop are all no-gos. options are: find the right plug roll with the AB6, looking most likely make a reducer and run a more widely available plug ??? i'd like to attempt running methanol and recommendations are for a hotter plug. really it'll be a miracle if it ever fires but for the sake of increasing likelihood of sucess even minutely i'd like to get a hotter spark. as above, odds are i'll just keep rollin stock plug specs. Quote Link to comment Share on other sites More sharing options...
Corbie Posted November 2, 2012 Share Posted November 2, 2012 Edit: Codes for NGK Spark Plugs Quote Link to comment Share on other sites More sharing options...
Steelies Posted November 2, 2012 Author Share Posted November 2, 2012 cheers corbie. i'd better go read some shit on whats the deal with these magical things! Quote Link to comment Share on other sites More sharing options...
KIRK Posted November 2, 2012 Share Posted November 2, 2012 that chart is about 50 years after villiers spec plugs. pretty much you only guna get 1 or 2 options. on newer stuff with 14mm plugs its easy. so many options. the reach of the plug makes a difference aswel. on my victas i run a cj8r/ ngk equivelent as despite being the same 'heat' as a regular cj8, it has a longer reach and i find less fouling and also more talks edit: resistor version of cj8 in conclusin, for 2t, pretty much best advice is: as cold as possible without fouling(wet) edit: seeing as you're an engineer. change the thread/make an adapter for more options? Quote Link to comment Share on other sites More sharing options...
Steelies Posted November 3, 2012 Author Share Posted November 3, 2012 its in my list of options but really i cant be fucked haha. will do if i have time at the end of the week. yeah dromageddon on a largely untested bike. Quote Link to comment Share on other sites More sharing options...
Borgweiser Posted November 3, 2012 Share Posted November 3, 2012 According to my insanely old spark plug books, the next heat range up for the Champion D-16 is a D-21, should still be available. Champions website still list them. Quote Link to comment Share on other sites More sharing options...
Borgweiser Posted November 3, 2012 Share Posted November 3, 2012 try tractor parts stores, a lot of older US tractors used 18mm spark plugs Quote Link to comment Share on other sites More sharing options...
kicker Posted November 3, 2012 Share Posted November 3, 2012 One of my spare engines runs a smaller plug, I'll check what size it is tomorrow, could be an option. It also has electronic ignition, fancy Quote Link to comment Share on other sites More sharing options...
Testament Posted November 3, 2012 Share Posted November 3, 2012 yeah dromageddon on a largely untested bike. pretty much the only option Quote Link to comment Share on other sites More sharing options...
J2Racing Posted November 4, 2012 Share Posted November 4, 2012 I work for the biggest independent parts supplier in the country . We have a lot of parts the big players stopped selling years ago. I check if we have any plugs . Quote Link to comment Share on other sites More sharing options...
Steelies Posted November 4, 2012 Author Share Posted November 4, 2012 mean chur! Quote Link to comment Share on other sites More sharing options...
J2Racing Posted November 6, 2012 Share Posted November 6, 2012 WE'VE GOT FOUR CHAMPION D21. NOT SURE MAY BE TO HOT Quote Link to comment Share on other sites More sharing options...
Steelies Posted November 13, 2012 Author Share Posted November 13, 2012 cool thanks man, i'll try dig some information on heat range and may hit ya up. bike ran well on AB6, so may not need to go up the scale. Quote Link to comment Share on other sites More sharing options...
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