Iridium plugs and Nitrous
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Originally Posted by Z28XTC
These are TR55IX any good?
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Originally Posted by 02 Pewter LS1
I run the TR6IX and really like them Blacktransam turned me onto them. 
i love my irridiums.. change my plugs at 20k miles if i want to..
Mike
Originally Posted by 02 Pewter LS1
I run the TR6IX and really like them Blacktransam turned me onto them.
11 Second Club
Joined: Apr 2005
Posts: 172
Likes: 0
From: Tucson, Arizona
iridiums + nitrous = melted electrode and holed piston. been there done that with my nitrous injected drag bike. do yourself a favor and run spark plugs with thick electrodes when sprayin
Originally Posted by FAST FREDDY
iridiums + nitrous = melted electrode and holed piston. been there done that with my nitrous injected drag bike. do yourself a favor and run spark plugs with thick electrodes when sprayin
11 Second Club
Joined: Apr 2005
Posts: 172
Likes: 0
From: Tucson, Arizona
no lack of fuel as the bikes a/f ratio was dialed in on a motorcycle chassis dyno (dynojet 250). i run a power commander 3r, for bikes this is like ls1 edit for cars. as far as the heat range goes the plugs were stock heat range and the timing was left stock as well. gas was 100 octane unleaded race gas. the pistons were forged. the plugs electrode melted and then piston got a hole in it the size of a dime. even if the plug was 1-2 steps colder heat range i think this problem would have occured. i was doin 178 mph on GPS when this happened. got some oil on my rear tire and it was a wonder i didn't wreck. anyway, i run the old skool plugs with the thicker electrode now. i had my motor rebuilt with JE forged pistons and jacked my compression ratio up from 11.3:1 to 12.5:1. i backed my nitrous down from a 40 horse shot to a 35 horse shot. i run 100 octane full time now and when i spray now i run 110 octane leaded. oh yea, the bike is a year 2001 honda CBR-929
WOW, that had to be HOT HOT HOT!!!!!
The melting point of Iridium is over 4400 degrees (4435) and copper is a little over 2400 degrees (2446). Something seems a little off but not sure what... Either way copper would have given up the ghost much faster.
FYI, on the Denso Iridium plugs, the electrode is about the same size as a copper electrode on standard plugs, not small like on a platinum plug, which is known to hold heat too much for nitrous applications.
The melting point of Iridium is over 4400 degrees (4435) and copper is a little over 2400 degrees (2446). Something seems a little off but not sure what... Either way copper would have given up the ghost much faster.
FYI, on the Denso Iridium plugs, the electrode is about the same size as a copper electrode on standard plugs, not small like on a platinum plug, which is known to hold heat too much for nitrous applications.
11 Second Club
Joined: Apr 2005
Posts: 172
Likes: 0
From: Tucson, Arizona
Originally Posted by Airwolf
WOW, that had to be HOT HOT HOT!!!!!
The melting point of Iridium is over 4400 degrees (4435) and copper is a little over 2400 degrees (2446). Something seems a little off but not sure what... Either way copper would have given up the ghost much faster.
FYI, on the Denso Iridium plugs, the electrode is about the same size as a copper electrode on standard plugs, not small like on a platinum plug, which is known to hold heat too much for nitrous applications.
The melting point of Iridium is over 4400 degrees (4435) and copper is a little over 2400 degrees (2446). Something seems a little off but not sure what... Either way copper would have given up the ghost much faster.
FYI, on the Denso Iridium plugs, the electrode is about the same size as a copper electrode on standard plugs, not small like on a platinum plug, which is known to hold heat too much for nitrous applications.
i am not sure how iridium plugs are built for cars. in other words how thin or thick the electrodes are? i run ngk TR6's in my camaro. but in motorcycles the iridium plugs electrodes are literally like 4x thinner in diamater than non-iridium plugs.
Another good point on the size as well as how they are made.
The Denso "look" to have the same size tip as my TR6's had. I did not actually get the calibers out and measure but the tip was large. The larger (I'll call it amount of Iridium) tips in the Denso may also be why they are more expensive then the other Iridium plugs out there.
I have been running them for over a year and they still look new and have had no trouble on the spray. The only advantage I personally saw over the TR6 was a smoother idle. The TR6 worked fine for me also.
The Denso "look" to have the same size tip as my TR6's had. I did not actually get the calibers out and measure but the tip was large. The larger (I'll call it amount of Iridium) tips in the Denso may also be why they are more expensive then the other Iridium plugs out there.
I have been running them for over a year and they still look new and have had no trouble on the spray. The only advantage I personally saw over the TR6 was a smoother idle. The TR6 worked fine for me also.
You cant use a stock heat range plug with that much spray in relation to NA power thats is exactly why you melted holes in the pistons forged or not. The tip protrudes too far on a stock heat range plug and acts like a freaking glow plug especially with N2O....it got hot...VERY HOT.
The advantage of Iridium is a sligthly smoother idle and you never have to change them!
The advantage of Iridium is a sligthly smoother idle and you never have to change them!
Originally Posted by FAST FREDDY
iridiums + nitrous = melted electrode and holed piston. been there done that with my nitrous injected drag bike. do yourself a favor and run spark plugs with thick electrodes when sprayin
also the power commander 3R suxass.. i had it on the GSXR1000 when we tried to spray it.. **** that thing .. ended up with a yoshi box and actually flashing the ecu..
Mike
Originally Posted by blacktransam
that makes no sense.. a heat range is a heat range.. wether it be copper plaitnum or irridium.. platinims just have a low melting point.. irridiums.. have a higher Melting point and a smaller tip making them harder to foul and great for BIG tune ups with lots of fuel..
also the power commander 3R suxass.. i had it on the GSXR1000 when we tried to spray it.. **** that thing .. ended up with a yoshi box and actually flashing the ecu..
Mike
also the power commander 3R suxass.. i had it on the GSXR1000 when we tried to spray it.. **** that thing .. ended up with a yoshi box and actually flashing the ecu..
Mike
