Denzo IK 16 plugs?
- Thread starter Vipermann
- Start date
Racer Robbie
Enthusiast
yes i did and they are terrible. go with Autolite xp985, .035, 20 lb ft torque. if you can not find them I can sell them to you for 7.95 eaqch. The denso are not a projected tip but if you insist on tryinh them i have a brand new set for $50.00 including the UPS
After looking at the websites, the Denzo have a .4mm tip, and the XPs have a .6mm tip, so the Denzos should be better. The Denzos also run a .44 gap vs .35 for the XPs. I've also had great experience with Denzo in other cars ... wonder why not great for the SRT?
I run the Denso IQ16 in my SRT-10, and the IQ20 in Supercharged cars... EXCELLENT plugs. (one step colder, 2 steps colder than stock respectively) They got rid of an annoying cruise-speed unburned fuel popping/slight backfire issue in an SC GTS- that goes to show how much better they are at igniting the mixture than the previous plugs- which were brand bew Bosch plugs.
While the plugs may pose an issue in a bone stock car, a car with a VEC2 that is running a timing advance and additional fuel down low, the plugs work very well, and the step colder is a no-brainer, the stock Viper plugs are slightly too hot in my opinion.
While the plugs may pose an issue in a bone stock car, a car with a VEC2 that is running a timing advance and additional fuel down low, the plugs work very well, and the step colder is a no-brainer, the stock Viper plugs are slightly too hot in my opinion.
Racer Robbie
Enthusiast
on a stock car the autolites are the best besides the denso do not have an extender tip and if you melt down your engine DC will not honor the warranty
"The smaller the center wire, the stronger the spark for any given level of voltage"
Excuse my ignorance again. Platinum tip plugs have smaller center wires as well, but have lower kernel temperature (primary reason they are not preferred for high compression/power adders). I know nothing about iridium. How does it conductivity compare with copper or platinum? Similar concern as platinum?
Excuse my ignorance again. Platinum tip plugs have smaller center wires as well, but have lower kernel temperature (primary reason they are not preferred for high compression/power adders). I know nothing about iridium. How does it conductivity compare with copper or platinum? Similar concern as platinum?
Who the hell told you that? Spark plugs are a maintenance item- if Dodge does not offer them to you for free, you are free to use ANY type you want as long as it does not mechanically damage the engine from installation or type. (IE- wrong thread pitch, using a HOTTER plug that would induce detonation and damage resulting from, etc) There is NO WAY Dodge could void your warranty for using a NON projected tip, and a COLDER plug. Now, Vice-Versa, yes, I could see them doing it, if the piston took off the tip of a too long plug, or detonation, etc.
Racer Robbie
Enthusiast
Guys,
The autolite XP plugs are a hybred plug. Try them , you will love them. One should not condem something new unless you have tried them first. And yes, I havr run the Denso's and they stink. I have 15 brand new Denso's in unopened boxes if you want to buy them. Just email or call me with an offer, pay by credit card, and I will pick up the UPS charges.
Here is the ling for the nAutolite XP985 Plugs:
http://www.autolite.com/xp/index.html
The autolite XP plugs are a hybred plug. Try them , you will love them. One should not condem something new unless you have tried them first. And yes, I havr run the Denso's and they stink. I have 15 brand new Denso's in unopened boxes if you want to buy them. Just email or call me with an offer, pay by credit card, and I will pick up the UPS charges.
Here is the ling for the nAutolite XP985 Plugs:
http://www.autolite.com/xp/index.html
Racer Robbie
Enthusiast
as a side note guys I do run Denso's in my 365 HP Mercury Marauder therefor I also thought they would work in the Viper which they do not. I have talked with Denso many times and they told me they do not have a plug for the viper and if you use a plug that is not for the viper application that they will not honor the warranty if the engine melts down, They also said DC will not too. They told me their plugs make the combustion chamber run way to hot on account of not having a projective tip. Skip White and I have covered this topic many times and have both done dyno pulls with different plugs. The Autolit XP's make your engine run smoother at idle, and reduce flat spots right up to red line. An added benifit is better fuel mileage.
-Technically speaking, just changing the heat range alone makes it a "non-viper" application. Seeing as an iridium plug is not even available in the OEM Vipers' TOO HOT 12 heat range, it is not even possible to get a true Viper application, even if a projected tip were available. Iridium plugs do not come in lower (hotter) than a 16 heat range. I stand by my "they will not void your warranty without MECHANICAL damage or INDUCED damage from the plug you used." PERIOD.
-While the absence of a projected tip does give less surface area for heat to channel through out of the combustion chamber, the colder heat range makes up the difference. However, you are only looking at the low-speed side of things. During heavy loads at high RPMs, a projected tip cannot channel the amount of heat it recieves, thus overheating- which leeads to pre-ignition much sooner than a non-projected plug. The whole "projected tip" idea is based upon low-speed driveability, as the plug tip gets hotter and does not foul as easily... high speed, heavy load, it is a no-no, especially in a HOT 12 heat range. The other thing a projected tip does is (in effect) advance the timing a couple degrees due to it being projected into the cylinder. This gives the "feeling" of more power and better reponse. Again, on a STOCK engine. A VEC-2 equipped car can get the best of both worlds with the ability to advance the timing back, and run a colder non-projected plug that will not cause detonation after tuning in some additional power.
On a side note: I recently uncovered that the RC12ECC used in the SRT-10 is available in an RC10ECC variation. At two heat ranges colder, (USA Heat Range Style), with all other configurations being the same, it may be "the plug" to use. Does not look to be readily available however...
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