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Author Topic: Nitrous 101: Spark plugs  (Read 12287 times)

Offline A&J Performance

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Nitrous 101: Spark plugs
« on: September 27, 2004, 08:29:16 AM »
Spark plugs & nitrous performance
Quite often, a factory type wide-gap projected nose plug will produce a detonation condition after a few seconds of nitrous use. The detonation is not due to the heat range, it occurs because the ground strap of the spark plug becomes a glow plug instead of a spark plug. The ground strap is too long to dissipate the extra heat produced by the extra nitrous power. The correct solution is to replace the plugs with units that have shorter ground straps. By doing this, you will shorten the heat path from the ground strap to the plug base. It is also wise to go one or two heat ranges colder when using larger amounts of gas.

Anonymous

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Nitrous 101: Spark plugs
« Reply #1 on: September 27, 2004, 01:44:36 PM »
recommend any certain plug for stock motors using your 40hp dry kit?

Offline A&J Performance

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Nitrous 101: Spark plugs
« Reply #2 on: September 27, 2004, 11:25:24 PM »
Quote from: Anonymous
recommend any certain plug for stock motors using your 40hp dry kit?


For my basic 60 hp dry kit, you can use the stock plugs.
Although I am not saying that you could not use a one step colder plug either.

Offline YAG

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Nitrous 101: Spark plugs
« Reply #3 on: September 28, 2004, 01:40:53 AM »
What plug has a shorter ground electrode?
Intercooled MCXpress 58/12 twin entry power

Offline A&J Performance

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Nitrous 101: Spark plugs
« Reply #4 on: September 28, 2004, 04:41:54 PM »
Quote from: yagmaster
What plug has a shorter ground electrode?


Shorter than stock ?

Offline j winkelman

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Nitrous 101: Spark plugs
« Reply #5 on: October 01, 2004, 05:11:05 AM »
anyone have any pics on how to read a plug with race fuel in it?

Offline YAG

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Nitrous 101: Spark plugs
« Reply #6 on: October 01, 2004, 11:06:36 AM »
Quote from: A&J Performance
Quote from: yagmaster
What plug has a shorter ground electrode?


Shorter than stock ?


Yeah shorter than stock.
Intercooled MCXpress 58/12 twin entry power

Offline ZX12richard

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Nitrous 101: Spark plugs
« Reply #7 on: October 12, 2004, 08:19:30 PM »
I am running on heat range cooler than stock... My plugs have 2 short electrodes...
CR10EK's... CR9EKPA was stock... Someone said they had troubles with the platinum fracturing so switched to them...
Two bottles no waiting...


Offline hawkwind

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Nitrous 101: Spark plugs
« Reply #8 on: October 31, 2004, 05:05:28 AM »
for the bussa you have  "cheap"  CR10E this is the coldest projected type available  there are also 2 other "racing types " but be warned they are extreamly expensive  at least in Australia  
R0373A-10   or R0045Q-11
Im using the CR10E 's so far so good  but with up to a 300 shot I doubt it
DONT use the iridium's  each time I have they have melted the electrodes
hope I dont have to go to the special racing plugs as they cost $150 + tax EACH plug  :shock:  :shock:
Hawkwind
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Offline SPEED KING

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Nitrous 101: Spark plugs
« Reply #9 on: November 11, 2004, 12:14:46 AM »
Quote from: hawkwind
for the bussa you have  "cheap"  CR10E this is the coldest projected type available  there are also 2 other "racing types " but be warned they are extreamly expensive  at least in Australia  
R0373A-10   or R0045Q-11
Im using the CR10E 's so far so good  but with up to a 300 shot I doubt it
DONT use the iridium's  each time I have they have melted the electrodes
hope I dont have to go to the special racing plugs as they cost $150 + tax EACH plug  :shock:  :shock:
Hawkwind


I run the hand assembled 12 heat range plugs...they work great..

Joe the main problem is not the ground strap length it is the heat range of the plug, the insulator if the correct heat range will assist in absorbing the heat that may lead to preignition or a better term is "abnormal" combustion..

J
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Congrats to Richard Assen 260.7

Offline hawkwind

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Nitrous 101: Spark plugs
« Reply #10 on: November 12, 2004, 03:42:54 AM »
I run the hand assembled 12 heat range plugs...they work great..



J[/quote]

what hand assembled  12's NGK?  where & how much ?  :?
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Offline southsidexpress

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Nitrous 101: Spark plugs
« Reply #11 on: December 31, 2004, 10:20:07 AM »
CR10EK DUAL TIP NGK!!!!!!
NEVER EVER,EVER, EVER, BURNT A TIP OR HAD ONE FAIL!!!!!!!
IF BETTER IS POSSIBLE THEN GOOD IS NOT ENOUGH!

THEMOTORHEAD

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Nitrous 101: Spark plugs
« Reply #12 on: January 10, 2005, 08:52:36 PM »
THE BIG PROBLEMS IGNITION LEAD
PULL MORE TIMING OUT AND ADD A LIL FUEL
AFTER 16 YEARS OF PROMOD/PROCOMP YOU'LL FIND OUT SHIT

Offline 2fast4u2c

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Nitrous 101: Spark plugs
« Reply #13 on: January 11, 2005, 05:41:25 AM »
Quote from: THEMOTORHEAD
THE BIG PROBLEMS IGNITION LEAD
PULL MORE TIMING OUT AND ADD A LIL FUEL
AFTER 16 YEARS OF PROMOD/PROCOMP YOU'LL FIND OUT SHIT


Ditto on the timing and adding more fuel.

Guy
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Offline MATT_WRIGHT

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Nitrous 101: Spark plugs
« Reply #14 on: January 11, 2005, 06:20:15 AM »
Quote from: THEMOTORHEAD
THE BIG PROBLEMS IGNITION LEAD
PULL MORE TIMING OUT AND ADD A LIL FUEL
AFTER 16 YEARS OF PROMOD/PROCOMP YOU'LL FIND OUT SHIT


    I agree 100% this will eliminate "abnormal combustion", pre ignition, detnation.  As a byproduct of doing it this way you lose lots of power.  It doesn't make sense to spray 150hp of nitrous into a motor that only makes 195 hp because you have too much timing backed out of it, and loading it with too much fuel.  195+150 yeilds you 345  
    This has been my arument with big wet kits for years.  Subtract another 10 motor hp for the pertruding nozzles. now you have a 335hp motor  
    Nitrous is a balancing act, The most timing you can keep in, the least amount of fuel, and the hottest spark makes the most power every time.  You just have to figure out what works and what burns parts.  Last year our motor made 253, and we hit it with 150+ dry nitrous pulling out minimal timing, and adding probably too much fuel.  This combination made 400+hp with the back tire breaking lose.  
    There is a lot more to be made.  Control is the issue
Matt Wright

Offline Hybrid

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Nitrous 101: Spark plugs
« Reply #15 on: January 15, 2005, 08:49:58 AM »
Stock on my 1000 is CR8EK. If I go to a CR10EK how much will that affect the bike OFF the nitrous?

Offline Bossman

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Nitrous 101: Spark plugs
« Reply #16 on: February 07, 2005, 09:07:11 PM »
Good stuff to know Matt. I guess I will not hve to go bigger than a 100 shoot then.
living life 1320 ft at a time

Offline MATT_WRIGHT

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Nitrous 101: Spark plugs
« Reply #17 on: February 07, 2005, 09:19:54 PM »
Let me know if I can help.  

We're building a new controller to work in conjunction with ours, or most any other aftermarket fuel system.   We'll get them out working on the track then pass the ideas along.  We're keeping it real simple this time.
Matt Wright