turbo spark plugs?
10-26-2004, 09:49 PM
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turbo spark plugs?
what type of plugs are recommended for greddy tt engine running 6lbs of boost??
brand?/where to buy?
also...while on the subject, any other precautions to be taken running 6-7 pounds????
brand?/where to buy?
also...while on the subject, any other precautions to be taken running 6-7 pounds????
10-27-2004, 12:42 AM
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I got the Denso Iridium's! Hey T, Was supposed to pick up my car today and they said it wasn't finnished. Should have kept my fingers crossed huh. It figures.
10-27-2004, 05:04 AM
#4
yup...one step colde is sufficient. I have the NGK's that Dynamic6er mentions above. I used to have the Greddy two steps colder, and they were totally fouled and carboned up. I think they are too cold for street usage. I switch to one step colder and havent had any problems. 
10-27-2004, 11:11 AM
#7
I am using the standard gap they came with. roughly .45
I know its a bit wide, but those NGK Iridiums are so dam hard, a was afriad to damage the electrode by forcing it...so I left them alone. The Greddy's were pre-gapped at .35
I dyoned 416whp after swapping plugs and plenum...no issues whatsoever.
I know its a bit wide, but those NGK Iridiums are so dam hard, a was afriad to damage the electrode by forcing it...so I left them alone. The Greddy's were pre-gapped at .35
I dyoned 416whp after swapping plugs and plenum...no issues whatsoever.
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10-28-2004, 09:40 PM
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The NGK Iridiums don't come in one step colder than stock... Does Denso make Iridiums one step colder than stock? I need to get the plugs tomorrow... I might just have to get the Greddy ones or the HK$ ones.
10-29-2004, 04:13 AM
#11
Originally posted by HK$FairladyZ
The NGK Iridiums don't come in one step colder than stock... Does Denso make Iridiums one step colder than stock? I need to get the plugs tomorrow... I might just have to get the Greddy ones or the HK$ ones.
The NGK Iridiums don't come in one step colder than stock... Does Denso make Iridiums one step colder than stock? I need to get the plugs tomorrow... I might just have to get the Greddy ones or the HK$ ones.
10-30-2004, 08:54 AM
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Anyone running FI should use platinum. We find that the iridiums tend to break or be too brittle to be gapped properly. We've actually had quite a few Supra guys that have found they're missing parts of their plug when they pull them out. Not good 
but better then a broken motor
but better then a broken motor
10-30-2004, 11:10 AM
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dynamic6er - that's the first time I have ever read someone endorse platinum for heavy hp FI - it is the poorest conductor of electricity for a plug.
I know we have used iridiums alot and never ran into an issue even on high hp machines - of course alot of this depends on what you are using as far as a coil. On my 280 ZX (uses an Electromotive ecu which has its own high power coilpacks) I use normal plain old NGK copper for purely economic reasons. At last check, I was even using stock temp plugs too (a tad under 600hp)
GQ - thanks for the clarification - I forgot Greddy used rebadged NGK.
I know we have used iridiums alot and never ran into an issue even on high hp machines - of course alot of this depends on what you are using as far as a coil. On my 280 ZX (uses an Electromotive ecu which has its own high power coilpacks) I use normal plain old NGK copper for purely economic reasons. At last check, I was even using stock temp plugs too (a tad under 600hp)
GQ - thanks for the clarification - I forgot Greddy used rebadged NGK.
Last edited by Z1 Performance; 10-30-2004 at 11:12 AM.
10-31-2004, 03:56 AM
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Originally posted by booger
NGK does make a one step colder plug.....LFR6AIX-11 6619 www.clubplug.net
NGK does make a one step colder plug.....LFR6AIX-11 6619 www.clubplug.net
10-31-2004, 06:06 PM
#18
Just about everyone on this board is using one or two steps colder NGK, Greddy, Denos...etc...but all Iridium. Those that are breaking pieces of plugs...have much bigger problems...I think...like detonation. These are the best plugs for turbo applications.
