So what spark plugs do I buy again? '99 GS300
01-30-20, 05:15 PM
#1
Driver School Candidate
Thread Starter
So what spark plugs do I buy again? '99 GS300
Is there a specific model number of NGKs or whatevers thats best for my '99 GS300, also what should I gap them to?
01-31-20, 04:09 AM
#3
NGK 4589 IFR6T11
For a few reasons: In all the years of the 2JZ-GE VVTi they went from double platinum in the earlier ones and moved to iridium later on (like the IS300 for example) They also went from a heat range of 5 to a heat range of 6 even when they were still using platinum. The latest 2j's were using iridium with a heat range of 6, and no changes have been made to the engine. These will be the best and longest lasting plugs for the engine and will be the best to have if you ever start doing bolt on's etc. for more power. Just leave them at the gap they come at.
For a few reasons: In all the years of the 2JZ-GE VVTi they went from double platinum in the earlier ones and moved to iridium later on (like the IS300 for example) They also went from a heat range of 5 to a heat range of 6 even when they were still using platinum. The latest 2j's were using iridium with a heat range of 6, and no changes have been made to the engine. These will be the best and longest lasting plugs for the engine and will be the best to have if you ever start doing bolt on's etc. for more power. Just leave them at the gap they come at.
01-31-20, 02:47 PM
#4
NGK 4589 IFR6T11
For a few reasons: In all the years of the 2JZ-GE VVTi they went from double platinum in the earlier ones and moved to iridium later on (like the IS300 for example) They also went from a heat range of 5 to a heat range of 6 even when they were still using platinum. The latest 2j's were using iridium with a heat range of 6, and no changes have been made to the engine. These will be the best and longest lasting plugs for the engine and will be the best to have if you ever start doing bolt on's etc. for more power. Just leave them at the gap they come at.
For a few reasons: In all the years of the 2JZ-GE VVTi they went from double platinum in the earlier ones and moved to iridium later on (like the IS300 for example) They also went from a heat range of 5 to a heat range of 6 even when they were still using platinum. The latest 2j's were using iridium with a heat range of 6, and no changes have been made to the engine. These will be the best and longest lasting plugs for the engine and will be the best to have if you ever start doing bolt on's etc. for more power. Just leave them at the gap they come at.
02-01-20, 04:30 PM
#5
Driver School Candidate
Thread Starter
NGK 4589 IFR6T11
For a few reasons: In all the years of the 2JZ-GE VVTi they went from double platinum in the earlier ones and moved to iridium later on (like the IS300 for example) They also went from a heat range of 5 to a heat range of 6 even when they were still using platinum. The latest 2j's were using iridium with a heat range of 6, and no changes have been made to the engine. These will be the best and longest lasting plugs for the engine and will be the best to have if you ever start doing bolt on's etc. for more power. Just leave them at the gap they come at.
For a few reasons: In all the years of the 2JZ-GE VVTi they went from double platinum in the earlier ones and moved to iridium later on (like the IS300 for example) They also went from a heat range of 5 to a heat range of 6 even when they were still using platinum. The latest 2j's were using iridium with a heat range of 6, and no changes have been made to the engine. These will be the best and longest lasting plugs for the engine and will be the best to have if you ever start doing bolt on's etc. for more power. Just leave them at the gap they come at.
02-01-20, 04:39 PM
#6
Ya I like anything NGK. I'm running their wires and coils too. Wires aren't as important of a factor, but you can't beat NGK when it comes to quality.
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j3rf (02-01-20)
02-01-20, 05:00 PM
#7
Driver School Candidate
Thread Starter
NGK 4589 IFR6T11
For a few reasons: In all the years of the 2JZ-GE VVTi they went from double platinum in the earlier ones and moved to iridium later on (like the IS300 for example) They also went from a heat range of 5 to a heat range of 6 even when they were still using platinum. The latest 2j's were using iridium with a heat range of 6, and no changes have been made to the engine. These will be the best and longest lasting plugs for the engine and will be the best to have if you ever start doing bolt on's etc. for more power. Just leave them at the gap they come at.
For a few reasons: In all the years of the 2JZ-GE VVTi they went from double platinum in the earlier ones and moved to iridium later on (like the IS300 for example) They also went from a heat range of 5 to a heat range of 6 even when they were still using platinum. The latest 2j's were using iridium with a heat range of 6, and no changes have been made to the engine. These will be the best and longest lasting plugs for the engine and will be the best to have if you ever start doing bolt on's etc. for more power. Just leave them at the gap they come at.
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02-02-20, 05:27 AM
#8
You can use either. The 5464 is a 5 heat range plug. It was used up to year 2000 models. 4589 is just what became OE for the IS300 as I mentioned. So definitely compatible in my opinion. The engineers better refined the ignition system apparently. For whatever reason they saw fit to go to a colder plug. So I went with that. At this point I'm running iridium with a heat range of 7 for going with more boost. You can judge what you need in a plug based on performance goals etc. But if you want to avoid all the research, I'm giving you what I think is the best plug you can use for your stock/bolt on's 2j engine.
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