Spark Plugs
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Member
Joined: Nov 2001
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From: New York
Spark Plugs
Has anyone ever tried changing the mercedes stock spark plugs and replacing them with thos Uridium spark plugs. They state that its the best kind of pulg you can have. ANy ideas guys?
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Joined: Jun 2002
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From: Encino
2002 C230K
it;s not the iridium spark plugs that are the best, it's iridium ignition coil/cables/wires. best plugs are platinum. most new benzes already come with NGK iridium wires, as far as i know anyway. and most cars in general come with platinum plugs.
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my car has no wires, there is a coil on top of each plug. as for the platinum plugs this is due to the fact that americans are lazy and dont want to have their cars serviced on a regular basis. the platinum plugs are there so you acn go 100000 on plugs. i on the other hand will change plugs every 30000 on my car, it doesnt bother me. as for iridium wires/coil the wires dont make any difference in performance.
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From: Encino
2002 C230K
the iridium wires help keep consist currents running to the plugs. they also can handle higher current which will give a hotter spark resulting in better burn. it may not do jack for power, but it does help keep the exhaust relatively clean and the power consistent.
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ok the wire only transmits the amount of energy the coil produces, and actually it transmits less than the coil produces due to resistance. how do the wires keep the exhaust cleaner???
please explain this one!
as for wires, they produce NO hp. the only reason you might see a hp gain is if your old wires were so ****ed up that a new set actually returned the hp to original figures. the only way to produce hp is to burn more gas/air per stroke.
please explain this one!
as for wires, they produce NO hp. the only reason you might see a hp gain is if your old wires were so ****ed up that a new set actually returned the hp to original figures. the only way to produce hp is to burn more gas/air per stroke.
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From: Chicago
Volvo V90 CC
Originally posted by nov0798
ok the wire only transmits the amount of energy the coil produces, and actually it transmits less than the coil produces due to resistance. how do the wires keep the exhaust cleaner???
ok the wire only transmits the amount of energy the coil produces, and actually it transmits less than the coil produces due to resistance. how do the wires keep the exhaust cleaner???
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dude the wires will not produce any hp. plain and simple! as for how well the fuel mixture burns, if your fuel ratio is not correct then it will not burn correctly. plus i dont know why we are arguing this as our cars do not have wires on them, and its obvious that you do not know about how an engine works. like i have said the ONLY way to produce more hp is to burn more fuel/air in a given amount of time.
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From: Chicago
Volvo V90 CC
Originally posted by MKB-C32
Maybe this will help you NGK
Maybe this will help you NGK
I switched to SplitFire (non platinum) and I gained 2 tenths back.
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Joined: Apr 2002
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From: Chicago
Volvo V90 CC
Originally posted by nov0798
well switching to new plugs at anytime will give you 2/10
well switching to new plugs at anytime will give you 2/10
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From: York, PA
2003 C230K Sport Coupe, 1986 190E 2.3
Higher quality spark plug wires have less elctrical loss in them causing less current loss. Ie. more current to get the the plug and less fluctuation in that current. Sometimes new wires just let the juice flow better causing a hotter spark, this does not let you gain any HP unless your old wires sucked. I would imagine that was what dswilfire was trying to imply. Just like a bigger hot lead to your stereo amplifiers and bigger speaker wire allow more power to flow so does a better plug wire. So instead of a .1% loss you may get a .05%, that is all speculation since I am not going to look up the current loss accross diferent wire sets.
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From: U.K.
SL55
From NGK site.
Frequently Asked Questions
Q: How much of a performance improvement can I expect from changing plugs?
A: A common misconception is that changing spark plugs will result in a large power increase. In most cases, removing even seriously worn out spark plugs will only result in very modest power gains, typically about 1-2% of total engine output. This could be even less for computer-controlled vehicles, primarily because most newer vehicles have more powerful ignition systems and the vehicle's computer can make adjustments so that vehicle operation seems smoother and more seamless.
Many people think that simply supplying more spark to the firing tip can and will combust more fuel. What they don't understand is that most newer cars' engines are so efficient that they are already burning all of the available fuel. Simply adding more spark voltage can't burn more fuel because there is no more fuel to burn.
When a stock or near-stock engine is given a fresh set of spark plugs, peak efficiency is restored. The power gains that come from this restored state of tune are usually minimal. Any company that tells you that their spark plug will provide significant gains in power in a stock or near-stock engine is making blanket statements that may not be supportable.
Frequently Asked Questions
Q: How much of a performance improvement can I expect from changing plugs?
A: A common misconception is that changing spark plugs will result in a large power increase. In most cases, removing even seriously worn out spark plugs will only result in very modest power gains, typically about 1-2% of total engine output. This could be even less for computer-controlled vehicles, primarily because most newer vehicles have more powerful ignition systems and the vehicle's computer can make adjustments so that vehicle operation seems smoother and more seamless.
Many people think that simply supplying more spark to the firing tip can and will combust more fuel. What they don't understand is that most newer cars' engines are so efficient that they are already burning all of the available fuel. Simply adding more spark voltage can't burn more fuel because there is no more fuel to burn.
When a stock or near-stock engine is given a fresh set of spark plugs, peak efficiency is restored. The power gains that come from this restored state of tune are usually minimal. Any company that tells you that their spark plug will provide significant gains in power in a stock or near-stock engine is making blanket statements that may not be supportable.
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From: IN A BUS CONVERSION, ON TOUR !
1998 e420 ( 210 / 119 )
plugs
" MOVE THE CAT ASIDE FROM MY CHAIR, OPEN THE NEWSPAPER, TURN T.V. ON, AND YAWN!" https://mbworld.org/forums/newreply....te=1&p=165219#
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Joined: Jun 2003
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From: Socal
06' Clk 500 Cabriolet, 01' CL 55, 00' Clk 430
Originally Posted by nov0798
whatever dude! do some homework
Where's Vadim when we need him. Maybe, you should do your homework too by checking out www.evosport.com.
