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[Help]: Spark plug reading
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<blockquote data-quote="whatdamn" data-source="post: 2034964" data-attributes="member: 5381"><p>hey guys,</p><p></p><p>i've read my text books and online sources, but i still don't know how to read a spark plug properly.</p><p></p><p>hope you can help me out by explaining when does one need a 'cold' or 'hot' plug.</p><p></p><p>provided are pics of my current set of plugs which are the (apparently) proton original NGK BK5E. it's been used on my 4G93P putra for i think a little over 100000 km already.</p><p></p><p>was thinking if current engine mods would force me to go for a colder plug since engine heat should have increased. current engine mods done are:</p><p></p><p>mivec 60mm TB</p><p>GSR intake manifold (have not bored to 60mm yet)</p><p>powerzone 4-2-1 exhaust manifold</p><p>no catalytic converter. just a 51 mm ID exhaust piping (~ 2 inches ID).</p><p></p><p>here's some pics for you to digest and hopefully help me out here with some recommendations.</p><p></p><p>(if pics aren't clear, pls let me know so i can post clearer ones)</p><p></p><p>[ATTACH=full]616931[/ATTACH]</p><p>[ATTACH=full]616932[/ATTACH]</p><p>[ATTACH=full]616933[/ATTACH]</p></blockquote><p></p>
[QUOTE="whatdamn, post: 2034964, member: 5381"] hey guys, i've read my text books and online sources, but i still don't know how to read a spark plug properly. hope you can help me out by explaining when does one need a 'cold' or 'hot' plug. provided are pics of my current set of plugs which are the (apparently) proton original NGK BK5E. it's been used on my 4G93P putra for i think a little over 100000 km already. was thinking if current engine mods would force me to go for a colder plug since engine heat should have increased. current engine mods done are: mivec 60mm TB GSR intake manifold (have not bored to 60mm yet) powerzone 4-2-1 exhaust manifold no catalytic converter. just a 51 mm ID exhaust piping (~ 2 inches ID). here's some pics for you to digest and hopefully help me out here with some recommendations. (if pics aren't clear, pls let me know so i can post clearer ones) [ATTACH=full]616931[/ATTACH] [ATTACH=full]616932[/ATTACH] [ATTACH=full]616933[/ATTACH] [/QUOTE]
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[Help]: Spark plug reading