Yup. It may be a waste but I'm trying them. I'm tired of fouled plugs. I have tried many different plugs over this season and I'm sick of fouled plugs. The problem may not be the plugs themselves but at this point I'm pretty desperate to be fix the consistency problems I have been having this season.

So, does anyone have experience with iridium plugs, good or bad?

 

Well, Iridium tipped plugs came oem on my wife's Lexus. I recently swapped plugs at 70k miles and the plugs I removed were barely worn! I reinstalled NGK Iridum plugs.

Iridium is the least corrosive metal and is extremely hard. They use Iridium tipped plugs on helicopters. They should work well, but if you keep fouling plugs you need to address that issue or you will waste a lot of money on plugs and elbow grease replacing them all the time.

 

Prior to my 160* thermostat my plugs never fouled up regardless of the brand name... Now after my 160* thermo was installed I have seen some carbon build up on the plugs.

I wonder if this is related to the Colder Thermo.


Marvin

 

Sounds like a fuel/spark problem. What plugs were you running? What were you gapping them at? etc...

Car running rich? Missfiring often? a:f?

 

Are you running an aftermarket ignition.....if not , it would help.

 

There have been problems all year with my car.

In the last six weeks or so there have been new:

starter
alternator
ground
hot leads
ICM
coil
cleaned all contacts and connections
new kill switch

I have had Champion and Autolite plugs (regular plugs).
compression is fine

This last weekend I re-hooked up the MSD 6AL and that did not make any difference.

 

Irridium is also used in xray tubes, specificly the rotor which is subject to very high voltage and heat. No doubt the material would not breakdown for a very long time, but I'm not sure if this would significantly reduce fouling. Good luck, I'm sure its worth a try though. I bet you could clean them and reuse them over and over and over before you ever needed to replace them.

 

Have you done any logging to see what your BLMs are? I dont think the IX plugs will solve your problem.

 

sounds like you are trying to band aid a symptom, not fix the cause.

 

ted, I have to agree with the others. If your fouling plugs, the TR55IX plugs isnt going to help. Yes they might not foul or go bad as easy due to the material but its still just a band aid to some other problem. Are they fuel fouled or oil fouled?

BTW, Ive been running the TR55VX plugs for 2 years now. Ive pulled them 2 times just to take a look and they were fine. Cleaned them up and put them back in.

If the plug is just fouled then you can clean them up with a brass brush (and I stress brass) and some brake clean and reuse em. Brass is softer than copper/platnium and iridum so it wont harm the plug. If they are worn then there is most likely some other ignition related problem.

 

I know this is a temporary fix. I have a buddy and fellow racer who will go through the car over the Winter and clean up many things from the fouling problem to the clutch pedal that has been dead weight for three years, loose wires, and the left over AC plumbing... He knows what he is ding and wants to do it.

However, I have two points races and the bracket finals left on my schedule for this year. The next points race is this Sunday. I just need a short term fix.

Thanks for all the advice. The other comment that a few racers have made is to maybe try heated 02's.....