Home / Toyota Supra Forums

Go Back   Toyota Supra Forums! Join the Supra forum! > Performance, Modification, and Maintenance Forums - for generation specific discussions > MKIII Supra

Reply
 
Thread Tools Display Modes
Old 06-28-2006, 06:01 AM   #1
h8z2luze
12psi boost
 
h8z2luze's Avatar
 
Join Date: May 2006
Location: Nor*Cal
Posts: 338
h8z2luze is on a distinguished road
Default Spark plugs?

I know you all like ngk but What about bosh platnum 4's???
__________________
1989 Supra 7MGE MK3 5-speed project...
http://www.cardomain.com/ride/2385505

Last edited by h8z2luze; 06-29-2006 at 03:06 AM.
h8z2luze is offline   Reply With Quote
Old 06-28-2006, 07:51 AM   #2
skunk
3" Exhaust
 
skunk's Avatar
 
Join Date: Jun 2005
Location: southern oregon
Posts: 133
skunk is on a distinguished road
Default spark

I was reading A great article about how In any forced induction or No2 charged cars, certin spark plugs will actually heat up so much it can work like a gloe plug, igniting the gas at detrimental times. It's all about the ground coming out of the top of the plug if it's to long it will make excessive heat(no pun intended) I personally have run the platnum 4's and cant tell the diff. But all I know is, if their are 700+ whp supras running ngk's, works for me.
skunk is offline   Reply With Quote
Old 06-28-2006, 10:46 AM   #3
suprasforlife
3" Exhaust
 
Join Date: Jun 2006
Location: Montana
Posts: 71
suprasforlife is on a distinguished road
Smile

I've used them both and personally I like the +4's. Acceleration and deceleration feel smoother in my car with them. This is in my mk2 with the 5m-ge. I replaced the cap, rotor, and wires to which makes everything better.
Have not done it yet in my mk3 as I just got it a few days ago. Happy B-Day to me.
suprasforlife is offline   Reply With Quote
Old 06-28-2006, 03:59 PM   #4
h8z2luze
12psi boost
 
h8z2luze's Avatar
 
Join Date: May 2006
Location: Nor*Cal
Posts: 338
h8z2luze is on a distinguished road
Default

Thanks for the resopnses. I had the 4's in a eclipse and they seemed to do ok. I heard they burn valves though cause they run to hot or something.
__________________
1989 Supra 7MGE MK3 5-speed project...
http://www.cardomain.com/ride/2385505
h8z2luze is offline   Reply With Quote
Old 06-28-2006, 06:31 PM   #5
theWeezL
12psi boost
 
theWeezL's Avatar
 
Join Date: May 2006
Location: Oregon
Posts: 376
theWeezL is on a distinguished road
Default

While the claims of the +4 look great on paper in theory they do little to help performance. A spark will take the path of least resistance, so that will be the electrode that is closest to the core. As they wear this gap changes and a new electrod emerges as the shortest path. The problem is the core is still wearing away all this time as well. The +4's are great if you want a super long lasting maintenance free plug. BUT, if your looking for performance the thing to look for is the strongest spark. The key here is resistance. The lower the resistance, the better the spark will be. To be honest there is nothing new on the market that performs significantly better than a copper core plug. The problem is in longevity. Basically its a trade off...lifespan vs resistance

I am currently trying the new irridium NGK's and I felt improvement over the bosche Platinums that came out (not a fair comparison though as my platinums were toast)
__________________
____________

Eagles may soar, but weezl's never get sucked into jet engines!


theWeezL is offline   Reply With Quote
Old 06-29-2006, 03:05 AM   #6
h8z2luze
12psi boost
 
h8z2luze's Avatar
 
Join Date: May 2006
Location: Nor*Cal
Posts: 338
h8z2luze is on a distinguished road
Default

How much were the NGK's? I might go with those.
__________________
1989 Supra 7MGE MK3 5-speed project...
http://www.cardomain.com/ride/2385505
h8z2luze is offline   Reply With Quote
Old 06-29-2006, 04:02 AM   #7
theWeezL
12psi boost
 
theWeezL's Avatar
 
Join Date: May 2006
Location: Oregon
Posts: 376
theWeezL is on a distinguished road
Default

I believe I paid 8.15 each...not exactly the cheapest plugs on the planet
__________________
____________

Eagles may soar, but weezl's never get sucked into jet engines!


theWeezL is offline   Reply With Quote
Old 06-29-2006, 04:58 AM   #8
mrnickleye
1000whp postwhore
 
mrnickleye's Avatar
 
Join Date: Jun 2005
Location: Mojave Desert, Calif.
Posts: 1,705
mrnickleye is on a distinguished road
Default

Besides that, I had problems with bosch breaking down. In fact, I was talking to some other lifelong mechanics (at a different shop) today about misfires in engines. We all seemed to have our stories about bosch plugs being a problem.

I started using Autolite plugs about 20 years ago, and have never had a plug problem. These other guys said about the same thing. We also all agreed that NGK and Nippon-Denso plugs were trouble free.

(But when I read the "HYPE" of bosch plugs, I almost get sucked in.)
__________________
Had a Red 1989 N/A. Automatic. Sports Pkg. w/wing.
TEMS, and some nice MODS. Sold to a friend 10/08/08.
mrnickleye is offline   Reply With Quote
Old 06-29-2006, 07:21 AM   #9
Isphius
500whp yet?
 
Isphius's Avatar
 
Join Date: Nov 2005
Location: Long branch, NJ
Posts: 1,006
Isphius is on a distinguished road
Default

My bosch plat +4 plugs failed after about 1000 miles. My motor started missing when i gave it more than 1/4 throttle untill it was running warm. Then it still totally didnt go away. And it got worse and worse every day. I was at the point of ordering new fuel injectors, But id figured id rule the plugs out. I got cheap 2$ pulgs from pep boys and it ran fine. Theve been good for bout 3k miles now. So i not to fond of the +4s. But ive had them in my monte carlo for 3 years and it still runs beautiful. So who knows? i would def trust the NGKs tho. Why would a plug make the gasoline burn hotter? Unless other plugs dont burn the gas all the way...I figure the plug cant change the combustion reaction too much, It just ignites the gas. Im just asking someone to clarify this if they know why.
__________________
Yay the supra assistant is gone!!! WEEE!!
Isphius is offline   Reply With Quote
Old 06-30-2006, 03:19 AM   #10
h8z2luze
12psi boost
 
h8z2luze's Avatar
 
Join Date: May 2006
Location: Nor*Cal
Posts: 338
h8z2luze is on a distinguished road
Default

is there a huge diffrent in the iridiums and the regular ngk's?
__________________
1989 Supra 7MGE MK3 5-speed project...
http://www.cardomain.com/ride/2385505
h8z2luze is offline   Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Spark Plugs (1G-GE vs 7M-GE) makemedie Non-Generation Specific Questions 5 10-26-2008 05:19 AM
NGK Spark Plugs 91 Supra MKIII Supra 5 08-07-2007 03:52 AM
1986.5 with blown Head Gasket - Removing Spark Plugs unkymurch Non-Generation Specific Questions 10 03-02-2007 06:48 PM
Issues After Changing Spark Plugs Getphazed MKIII Supra 8 11-03-2006 12:31 PM
Spark plugs & WIRES HEMAN MKIII Supra 2 11-03-2006 05:31 AM


All times are GMT. The time now is 04:00 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

1986



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87