anybody tried the Bosch +2 or +4 platnium plugs? just wondering. they claim all that much more spark with the extra tips... you guys opinions are definately appreciated and respected- as usual..
for performance, stick with copper core plugs....... the copper conducts electricity better than platinum...... platinum plugs are only meant to last longer. I never sell toyota owners +2 or +4 plugs.....
factory on your car is probably iridium at nearly $100 from the dealer (i'm guessing).
stick with copper NGK's, can't go wrong.
for boost users.... DON'T USE PLATINUM.... they are much more likely to crack and leave bits of platinum in your motor!
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1) 2004 IS300 Manual/LSD/Sportdesign 2) 2010 Corolla S 5 speed 3) 1986 MR2 "MK1.22" 5sfe/s54 swap 3) 1995 Ford Explorer 4x4, TT/AAL/custom shackle lift, 31"s
for boost users.... DON'T USE PLATINUM.... they are much more likely to crack and leave bits of platinum in your motor!
Plats come recommended fr the factory. OEM denso and NGK for MKII turbos are platinum. I have personally ran denso plats for 5 years @ 15psi w/ no pre-ignition engine damage fr cracking plugs leaving bits in the combustion chamber.
It doesn't matter if your plugs have 20 tips on it. It doesn't mean the spark will jump all 20 ground electrodes at the same time. It won't even jump 2. It'll jump 1, the closest path to ground. That's just the basic law of electricity. And if it does happen to jump more than 1, it still doesn't mean you have a stronger spark.
well, I've tried both and and can't tell any difference performance wise. I had heard about the cracking and those tiny tips melting in combustion chamber , so i have been using the copper NGK's. they don't last nearly as long but I feel safer with them. maybe I'm just paranoid.
Try mr2oc.com. You will find more info there. On a relatively stock motor, stick with OEM spark plugs. You can also use NGK copper plugs but make sure they are gapped...however, copper plugs don't last as long.
well, I've tried both and and can't tell any difference performance wise. I had heard about the cracking and those tiny tips melting in combustion chamber , so i have been using the copper NGK's. they don't last nearly as long but I feel safer with them. maybe I'm just paranoid.
I think you're talking about iridium plugs. Toyotaspeed90 prolly meant the same.
Iridium plugs have tiny electrodes and they have a tendency to crack and cause dmage to valves and/or the tops of pistons.
Platinum plugs are completely fine for a moderately modified turbo MR2. However, you would be hard pressed to find a worse plug than the Bosch's.
Save your money. They are awful.
The best plug to use in the turbo MR2 is the copper NGKs (6097), but you need to change them every 3000 miles or so. Not a big deal since they are very cheap
thats what I've been using. NGK 6097 coppers... and yeah,OEMonkey,you are correct, I had the Iridium plugs. which I stopped using. especially for $38.00/set.. I will stick with the copper NGK's... thanks guys!
+4 works great with 4A-FE. No problem with 5S-FE.
High compression and boosted engine don't like the small tips. They don't carry heat away fast enough and will cause pre-ignition.
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