laxdude3622 Posted October 6, 2004 Share Posted October 6, 2004 What are the best spark plugs for the sc in your guys opinion that you have used? I have seen a few different kinds, and how much are they?, how many do I need? And how hard are they to install yourself? After you installed them what difference did you notice? Quote Link to comment Share on other sites More sharing options...
JDOwen2 Posted October 6, 2004 Share Posted October 6, 2004 I replaced mine with Denso Iridiums. If you have a SC300 you have to pull off throttle body intake to get to center plugs. Quote Link to comment Share on other sites More sharing options...
laxdude3622 Posted October 6, 2004 Author Share Posted October 6, 2004 How much? Notice any differences? Quote Link to comment Share on other sites More sharing options...
SCdriver Posted October 6, 2004 Share Posted October 6, 2004 I replaced my OEM plugs with NGK iridiums and they work fine. I increased my mpg on long highway trips approx. 1-2 mpg. If you shop around you can get them for $6-8/plug and they should last 80,000 mi+. Quote Link to comment Share on other sites More sharing options...
liteeyez2001 Posted October 6, 2004 Share Posted October 6, 2004 What are the best spark plugs for the sc in your guys opinion that you have used? I have seen a few different kinds, and how much are they?, how many do I need? And how hard are they to install yourself? After you installed them what difference did you notice? ← ho wmany u need depends on if u have a 300 or 400? if u have a 300(v6) u iwll need 6...if u have the 400(v8)...u will need 8 of them...i have used bosch platinum 4 plugs...and i luv em! i think i'll try to NGK plugs next...just 2 see what all the hype is about... Quote Link to comment Share on other sites More sharing options...
sc_toy Posted October 6, 2004 Share Posted October 6, 2004 A couple things, first off the SC300 is an I6 not a V6 but anyway.... Second, plugs are a bit of a hype thing, they have one task and as long as the stock plugs handle that task I haven't seen any science to prove why another plug would preform better. I would replace them with factory denso plugs, or another denso equivalent. For turbo/supercharged engines it's a different story, copper plugs tend to perform better so NGK-Rs are the chosen ones for the 4A-GZE, 3S-GTE and possibly the 2JZ-GTE guys... HTH, Aaron Quote Link to comment Share on other sites More sharing options...
southernsc300 Posted October 6, 2004 Share Posted October 6, 2004 denso iridium. it provides a better spark. not that your going to notice it or anything. Quote Link to comment Share on other sites More sharing options...
Gamer Posted October 6, 2004 Share Posted October 6, 2004 I use HKS SuperFire Racing Iridium plugs (s40i, heat rating 8), Keep in mind that I am running the 1JZ-GTE twin turbo at a high boost level (1.2bar/17.5psi), well high boost for the stock turbos.... So they would be overkill for the sc300/400 n/a But if you are going turbo or already are then these would be a very wise (somewhat expensive) choice. Quote Link to comment Share on other sites More sharing options...
laxdude3622 Posted October 7, 2004 Author Share Posted October 7, 2004 Well I just won an auction off ebay for 8 NGk Iridium Spark plugs, everything and shipping, 50 bucks Quote Link to comment Share on other sites More sharing options...
southernsc300 Posted October 7, 2004 Share Posted October 7, 2004 Well I just won an auction off ebay for 8 NGk Iridium Spark plugs, everything and shipping, 50 bucks ← nice buy Quote Link to comment Share on other sites More sharing options...
Lexusfreak Posted October 7, 2004 Share Posted October 7, 2004 Agreed! :) Quote Link to comment Share on other sites More sharing options...
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