JapCarForum Car Manufacturers Lexus/Toyota IS200 / IS300 / SPORTCROSS / Altezza Spark Plugs

Spark Plugs

Spark Plugs

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toxo
Posting Freak
4,843
22-03-2017, 06:37 AM
#11
The problem arises from incomplete burn or detonation overheating the ceramic part of the plug, which releases the iridium tip to fall into the bore :o
toxo
22-03-2017, 06:37 AM #11

The problem arises from incomplete burn or detonation overheating the ceramic part of the plug, which releases the iridium tip to fall into the bore :o

edeath
Senior Member
525
22-03-2017, 06:37 AM
#12
Some TTs ran 180bhp 1.8ts so could be beaten at a push Smile

Was Supercharged Racing Green IS200 Sport. Now APR Stage 1 Seat Leon Cupra (220 Bhp).
edeath
22-03-2017, 06:37 AM #12

Some TTs ran 180bhp 1.8ts so could be beaten at a push Smile


Was Supercharged Racing Green IS200 Sport. Now APR Stage 1 Seat Leon Cupra (220 Bhp).

toxo
Posting Freak
4,843
22-03-2017, 06:40 AM
#13
Maybe with an S/C kit... Tongue
toxo
22-03-2017, 06:40 AM #13

Maybe with an S/C kit... Tongue

steviewevie
Posting Freak
7,993
22-03-2017, 06:52 AM
#14
toxo The problem arises from incomplete burn or detonation overheating the ceramic part of the plug, which releases the iridium tip to fall into the bore :o

Isn't that a different problem though, i.e. not a problem with the plug itself ?

Never heard of it being a problem on the IS200, and the factory plugs are iridium-tipped.

Are the OEM MR2 plugs iridium ones, or an aftermarket option ?

[Image: Sig-enginebay.jpg]
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !
steviewevie
22-03-2017, 06:52 AM #14

toxo The problem arises from incomplete burn or detonation overheating the ceramic part of the plug, which releases the iridium tip to fall into the bore :o

Isn't that a different problem though, i.e. not a problem with the plug itself ?

Never heard of it being a problem on the IS200, and the factory plugs are iridium-tipped.

Are the OEM MR2 plugs iridium ones, or an aftermarket option ?


[Image: Sig-enginebay.jpg]
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !

toxo
Posting Freak
4,843
22-03-2017, 06:56 AM
#15
I don't think iridium plugs existed when the MR2 was released lol. Unfortuantely pre and post ignition does happen in engines (admittedly more so in forced induction) and that breaks the plugs down. It's more of an issue with iridium than copper plugs due to their design - the tip element on an iridium plug is smaller and more easily seperated from the body.
toxo
22-03-2017, 06:56 AM #15

I don't think iridium plugs existed when the MR2 was released lol. Unfortuantely pre and post ignition does happen in engines (admittedly more so in forced induction) and that breaks the plugs down. It's more of an issue with iridium than copper plugs due to their design - the tip element on an iridium plug is smaller and more easily seperated from the body.

Chri5
Posting Freak
1,894
22-03-2017, 07:03 AM
#16
so in my case wher it seriously overheated then.
am i more at risk of it dropping off???
Chri5
22-03-2017, 07:03 AM #16

so in my case wher it seriously overheated then.
am i more at risk of it dropping off???

steviewevie
Posting Freak
7,993
22-03-2017, 07:05 AM
#17
I still wonder whether this is more of an MR2 issue rather than an iridium plug issue. Admittedly I know virtually nothing about the MR2 engine. But I do know that this doesn't seem to be a common issue (an issue at all ?) on the IS200s, and that the IS200 from the start had iridium plugs.

[Image: Sig-enginebay.jpg]
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !
steviewevie
22-03-2017, 07:05 AM #17

I still wonder whether this is more of an MR2 issue rather than an iridium plug issue. Admittedly I know virtually nothing about the MR2 engine. But I do know that this doesn't seem to be a common issue (an issue at all ?) on the IS200s, and that the IS200 from the start had iridium plugs.


[Image: Sig-enginebay.jpg]
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !

steviewevie
Posting Freak
7,993
22-03-2017, 07:05 AM
#18
What sort of plugs do you have Chri5 ?

[Image: Sig-enginebay.jpg]
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !
steviewevie
22-03-2017, 07:05 AM #18

What sort of plugs do you have Chri5 ?


[Image: Sig-enginebay.jpg]
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !

Chri5
Posting Freak
1,894
22-03-2017, 07:07 AM
#19
sure mine are iridium tipped mate
Chri5
22-03-2017, 07:07 AM #19

sure mine are iridium tipped mate

steviewevie
Posting Freak
7,993
22-03-2017, 07:13 AM
#20
Phil will probably be able to tell you when they were put in ?

[Image: Sig-enginebay.jpg]
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !
steviewevie
22-03-2017, 07:13 AM #20

Phil will probably be able to tell you when they were put in ?


[Image: Sig-enginebay.jpg]
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !

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