Hotter plugs does it equal hotter engine?? Options

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keithholden		#1 Posted : Monday, 22 October 2007 8:17:31 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 31/08/2005(UTC) Posts: 349 Thanks: 1 times		I put hotter spark plugs in my chev engine only because they didnt have any of the orginal ones in stock. Will this make my engine hotter?? I cant tell yet as I havnt managed to get my gauge to work correctly. So I cant compare. cheers If its not broke it will be soon
		If its not broke it will be soon
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Dr Terry		#2 Posted : Monday, 22 October 2007 9:11:33 PM(UTC)
Rank: Veteran Reputation: Groups: Moderator, Registered Joined: 1/03/2005(UTC) Posts: 6,116 Thanks: 1 times Was thanked: 219 time(s) in 199 post(s)		Hi keithholden. The heat range of the plug has nothing to do with the running temp or the coolant temp of the engine. It's to do with the temp of the plug tip when firing & mainly affects plug fouling. If the plug is too cold the plug will foul, or if
		If at first you don't succeed, just call it Version 1.0
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Dr Terry		#3 Posted : Monday, 22 October 2007 9:11:33 PM(UTC)
Rank: Veteran Reputation: Groups: Moderator, Registered Joined: 1/03/2005(UTC) Posts: 6,116 Thanks: 1 times Was thanked: 219 time(s) in 199 post(s)		Hi keithholden. The heat range of the plug has nothing to do with the running temp or the coolant temp of the engine. Its to do with the temp of the plug tip when firing & mainly affects plug fouling. If the plug is too cold the plug will foul, or if i
		If at first you don't succeed, just call it Version 1.0
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adam PERTH		#4 Posted : Monday, 22 October 2007 9:46:10 PM(UTC)
Rank: Veteran Reputation: Groups: Registered, Veteran Joined: 3/08/2007(UTC) Posts: 1,902		I generally put hotter plugs in worn cylinders, that are burning oil (eg chev 5 and 7, they generally wear first.) the hotter plug burns off any oil to prevent oil fouling, generally a remedy for an engine to extend its limited lifespan. A1 Boga
		Old holdens brought on the spot, quick decision, cash paid.
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keithholden		#5 Posted : Monday, 22 October 2007 11:32:55 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 31/08/2005(UTC) Posts: 349 Thanks: 1 times		Sweet. Ill use them till my next change :) If its not broke it will be soon
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Guest		#6 Posted : Tuesday, 23 October 2007 2:31:36 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		how do you tell a hot plug from a cold plug and vise versa ? cheers

vintageholden		#7 Posted : Tuesday, 23 October 2007 3:47:16 AM(UTC)
Rank: Veteran Reputation: Groups: Registered, Veteran Joined: 2/06/2006(UTC) Posts: 1,664		use colder plugs for lpg
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adam PERTH		#8 Posted : Tuesday, 23 October 2007 4:17:01 AM(UTC)
Rank: Veteran Reputation: Groups: Registered, Veteran Joined: 3/08/2007(UTC) Posts: 1,902		they have a 1-9 numbering system, usually in the part number id (Champion / NGK / bosch). The hotter plugs have a more pronounced electrode A1 Bogan.
		Old holdens brought on the spot, quick decision, cash paid.
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jabba		#9 Posted : Tuesday, 23 October 2007 7:43:30 PM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 17/04/2005(UTC) Posts: 465		If your engine detonates, and you like the timing where it is, try a plug 2 or 3 colder. If it fouls, then run a hooter plug or advance timing. I usually adjust for detonation timing then mixture then plug heat. If you wind back timing to get rid of
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Guest		#10 Posted : Wednesday, 24 October 2007 1:53:06 AM(UTC)
Rank: Guest Groups: Guests Joined: 2/09/2015(UTC) Posts: 43,977 Was thanked: 5 time(s) in 5 post(s)		thanks adam i take it the 1 to 9 system 1 being the coldest 9 the hotter cheers

christoss		#11 Posted : Wednesday, 24 October 2007 4:31:21 AM(UTC)
Rank: Member Reputation: Groups: Registered Joined: 5/09/2007(UTC) Posts: 57		Careful John, the heat range varies between brands. NGK plugs the 9 is the coldest and the 1 is hottest but i think it is Bosch that are backwards, 9 hot and 1 cold. My favourite plugs are NGK but each to their own whatever works for you. STRAIGHT LPG
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adam PERTH		#12 Posted : Wednesday, 24 October 2007 5:50:04 AM(UTC)
Rank: Veteran Reputation: Groups: Registered, Veteran Joined: 3/08/2007(UTC) Posts: 1,902		i wondered why i always got confused! i used to go by the electrode. A1 Bogan.
		Old holdens brought on the spot, quick decision, cash paid.
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