2000 Lexus GS400 Supercharged...what spark plugs should i use?

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06-27-10, 03:58 PM

blklexgs

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2000 Lexus GS400 Supercharged...what spark plugs should i use?

As stated in the title of the thread, I am wondering what type of spark plugs would work best for my supercharged lexus. I bought some Denso Platinum TT plugs (PK20TT) from Advanced Auto Parts, but am looking to see if something is better for my vortech supercharged setup. I'm not a fan of iridium based spark plugs, as I've had bad experiences in the past with horrible gas mileage. Thanks ahead of time!

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06-27-10, 06:24 PM

tmf2004

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Welcome to CL... check out the GS performance section.. Many members have had SC GS's.. Try the search also.. Sorry don't have any links at the moment

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06-27-10, 06:37 PM

DaveGS4

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I used NGK BKR7-EIX

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06-27-10, 07:02 PM

Alexus_300

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Quote:

Originally Posted by DaveGS4

I used NGK BKR7-EIX

I'm currently using the same plugs on my SC'd GS300 also and it's great. Just make sure the gap is around .031.

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06-27-10, 08:44 PM

speedaddic

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I use the same^

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06-28-10, 12:00 AM

Mr Jokster

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IIRC i'm using TR8ix

Quote:

Originally Posted by Alexus_300

I'm currently using the same plugs on my SC'd GS300 also and it's great. Just make sure the gap is around .031.

I thought Iridium plugs could not be gapped because of how delicate the tips were?

I suppose they can... if you're brave enough

Last edited by Mr Jokster; 06-28-10 at 10:42 AM.

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06-28-10, 02:54 PM

speedaddic

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you can't gap iridiums.

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06-28-10, 02:59 PM

vwynn

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Quote:

Originally Posted by DaveGS4

I used NGK BKR7-EIX

use the same as well.. "colder plugs"

what supercharger kit do you have?

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06-28-10, 08:54 PM

blklexgs

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Quote:

Originally Posted by vwynn

use the same as well.. "colder plugs"

what supercharger kit do you have?

I have a Vortech supercharger on my gs400... I'm glad to be part of club lexus, lots of great info on this forum and thanks for the replies! what do you guys think about Denso Double Platinum plugs compared to the NGK BKR7-EIX?

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06-29-10, 02:25 AM

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Mr Jokster

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Quote:

Originally Posted by speedaddic

you can't gap iridiums.

Heres Densos "guide" do doing so

http://densoiridium.com/installationguide.php

I personally wouldnt do it

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06-29-10, 06:18 AM

#11

speedaddic

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yea...I've tried that before and learned the hardway. Its not too easy...

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06-29-10, 07:04 PM

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Alexus_300

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Quote:

Originally Posted by Mr Jokster

Heres Densos "guide" do doing so

http://densoiridium.com/installationguide.php

I personally wouldnt do it

Technically you shouldn't need to gap the plugs but it's doable. I would however not use one of those round spark plug gap gauge to check the gap as it's not very accurate and will rub against the electrode. I use a feeler gauge to verify the gap.

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07-06-10, 01:46 PM

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blklexgs

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Quote:

Originally Posted by DaveGS4

I used NGK BKR7-EIX

i've replaced my plugs with the ones you suggested. the car feels a lot more smooth.

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11-05-10, 01:10 PM

#14

Rock-a-Lex

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Quote:

Originally Posted by blklexgs

i've replaced my plugs with the ones you suggested. the car feels a lot more smooth.

...old thread. Did you by any chance buy this car recently? Does it have SSR wheels? If so, I think I know the car...I have seen it once before for sale on long island. In any event...Welcome to ClubLexus!