The typical copper ones will wear out between 10,000 to 20,000 miles. Iridium – The pinnacle of spark plug tech. The heat range numbering system used by spark plug manufacturers is not universal. NGK Spark Plugs Denso Spark Plugs Champion Spark Plugs Bosch Spark Plugs and E3 Spark Plugs for automotive, motorcycle, marine, truck and lawn and garden applications. They contain an Yttrium-enhanced alloy, which enables up to 8 percent reduction in side wire temperatures for improved durability and less preignition. ... the opportunity—especially with power-adder combinations like superchargers or nitrous—that a non-projected nose spark plug with a short ground strap is the best choice. Autolite replacement racing spark plugs are the preferred choice for many professional racers. Spark Plug Reading HOME Reading Spark Plugs ... a R5671A-7 (a good street/strip plug) is a cold plug where a R5671A-10 is a very cold plug used for large 400hp and up nitrous and other power adder applications) Autolite Heat Ranges - The larger the number the hotter the plug is. So i got my spark plugs and since i am going to continue to run nitrous, with higher octane gas of course, i need to gap the spark plugs to .38 like i am used to. I like the NGK's -9 and -10 (for heavy nitrous and high compresion) the Autolites 3922 and I think 3923's are also a great nitrous plug. I am currently using AR94 and have only sprayed a 200 shot so far. ... Autolite AR3932X Spark Plugs 8 Pack Drag Racing Nitrous Supercharger Outlaw. Hot vs. On the bottle I always used non-projected R5671A-10's. I prefer Autolite plugs. Fitment: - 1965-1973 Mustangs Finding the right plug to use in a nitrous engine is one of the easier issues in tuning a nitrous engine. I was told to get Autolite spark plugs that are "colder," so I go to O' Reileys where they look at me all stupid. By internet suggestion i was sent to the Autolite HTO spark plugs that were 9.99$ each from summit racing. The Autolite Revolution HTO is commonly used in supercharged, turbocharged and nitrous applications as a colder spark plug to prevent detonation. Best thing is plugs for the track and plugs for the street. Zex makes thier own spark plugs for nitrous applications but I dont really trust a plug made by a nitrous only company, ya know. Im running a 255 lph fuel pump with 24 lb fuel injectors with a calibrated 75mm maf. right now i have autolite 24's in the car which i understand is that they are 1 heat range colder then stock. Spark plugs don’t last forever. 5.0 average based on 3 product ratings. Find Autolite R3935 Autolite Racing Spark Plugs and get Free Shipping on Orders Over $99 at Summit Racing! The words "hot" or "cold," when used in referencing spark plugs, are often a source of confusion and misunderstanding, since normally a hot spark plug is used in a cold engine (low horsepower) and a cold plug in a hot engine (high horsepower). 3. if i can use the 3933, i … When you add nitrous, superchargers, or turbos to your Pony you need the correct spark plug to maximize the horsepower benefits available from these modifications. 4 Stars, 0 product ratings 0. i will be running a wet kit. That is where Autolite "HT0" Spark Plugs come into play, these plugs are specifically designed for applications that require one step colder heat range. Autolite 103's or Motorcraft AWSFA 22C's. These plugs work well with moderate shots of nitrous along with forced induction. Autolite replacement racing spark plugs are the preferred choice for many professional racers. They are essentially resistors that glow red-hot when high amperage current is passed through the plug. I may get up to a 300 shot for the '09 season. This Set of Autolite Spark Plugs comes with eight (8) spark plugs that will fit 289, 302 or 351W engines. Now i have pro 1 heads with angled plugs, so i use autolite 3933 plugs. Superior Materials. This from the Autolite site.... An unaltered engine will run within the optimum operating range straight from the manufacturer, but if you make modifications such as a turbo, supercharger, increase compression, timing changes, use of alternate racing fuels, or sustained use of nitrous oxide, these can alter the plug tip temperature and may necessitate a colder plug. Find Autolite R3933 Autolite Racing Spark Plugs and get Free Shipping on Orders Over $99 at Summit Racing! Iridium plugs will deliver the best performance, the best fuel efficiency and the longest life span – but also the highest price tags. NGK Spark Plugs - Combo Deal - MSD 8.5mm Super Conductor Spark Plug Wires, 1998-2002 By Stealthperf.com in forum Sales and Group Purchases from our Great Sponsors! I know they are a colder plug than the 25's I use to run but are they cold enough?? A timer circuit preheats the glow plugs before the engine is cranked, and then turns the plugs off after a preset time when the extra heat is no longer needed. NOTE: Plugs are priced individually but may only be ordered in sets of 4. Autolite Race Plugs feature the latest plug design technology. Autolite has been in operation for over 100 years and has produced more than 11 billion spark plugs and glow plugs. These plugs are specifically designed for each application to meet or exceed OE quality and performance. We suggest the plugs for nitrous applications with approximately 175 to 225 hp jetting. from edelbrock: The term "heat range" refers to the relative temperature of the core nose of a spark plug. Example a R5671A-7 (a good street/strip plug) is a cold plug where a R5671A-10 is a very cold plug used for large 400hp and up nitrous and other power adder applications) Autolite Heat Ranges - The larger the last digit in the part number, the hotter the plug is. The J-Body Organization, j-body.org, is the worlds largest automotive enthusiast group exclusively geared towards the General Motors GM J-car platform including the Chevrolet Cavalier, Pontiac Sunfire, Pontiac Sunbird, Pontiac J 2000, Oldsmobile Firenza, Buick SkyHawk and … Details about Autolite AR3931 Spark Plug 8 Pack Spark Plugs Drag Racing Nitrous Promod Outlaw. In identical spark plug types, the difference from one full heat range to the next is the ability to remove 70°C to 100°C from the combustion chamber. Alright sorry guys I'm retarded with this whole nitrous thing and I'm trying to learn this stuff inside and out. These plugs are specifically designed for smaller bore engines like the Ford Modular Engines. Free shipping Glow plugs resemble spark plugs except without an electrode gap and no spark. Linc's bout 3 weeks ago did 347 with 750 Holly D/P and AFR 185 i started with the Autolite 3924's and those were fine N/A then we hit it with a 125 shot of NOS and plugs didn't look so good rejeted carb still not so good so then went 1 range colder then the plugs looked good. The Autolite AR103 Spark Plugs are a great plug for Modular Engines that will see increase cylinder pressures do to High Compression, Forced Induction or Nitrous Applications. My timing is at 12 degrees and my fuel pressure is 39 psi at wot. These NGK plugs are two heat ranges colder than factory and have a non-projected tip. Gap at .025-.027" Autolite makes plugs for Japanese, European, and Korean cars as well as plugs for Lawn & Garden and Power Sports. NGK #3186 G-Power Platinum Spark Plugs TR5GP (6-Pack) Starting off our list, we’ve chosen the NGK spark plug, or more accurately, a pack of 6 spark plugs that give you more than enough to upgrade the current ones in your LS1 engine, and then keep some at the side for spares. Autolite AR3931 Spark Plug 8 Pack Spark Plugs Drag Racing Nitrous Promod Outlaw. Their multi-rib insulator, copper center electrode, large cut back ground electrode (covered in nickel plating and sealed inside a longer insulator to resist carbon fouling), and double terminated suppressor provide the best EMI suppression. For example, a 10 heat range in Champion is not the same as a 10 heat range in NGK nor the same in Autolite. Autolite spark plugs are the best alternative to OE spark plugs, offering OE form, fit and function for all makes and models, both foreign and domestic, at a value price. i am trying to figure out which plugs to run. Re: Nitrous Spark plugs i run autolite 3922 plugs with timing on 14 works very well 89 LX TFS STREET KILLER stock block,twisted wedge heads, eldo intake, 24lb inj., 75tb, 73 mass air, comp cam, 4.10 gear, lakewood 90/10,50/50, 150 shot of gas. what spark plugs should i run for nitrous? Most avid Mustang owners, and professional engine builders of supercharged Mustang engines, recommend a variety of spark plugs that are one step colder for street applications. Signs That You Need to Change Your Spark Plugs . Thanks guys . Can i use those for my 150 shot or which ones should i use? Some people suggest also gapping them at .035 but they will wear quickly with such a small gap.Running a gap around .042 will cut the wear down and still allow you to spray, hopefuly without missing (spark blowout). On motor only I run projected nose R5672A-9 or -10's. Autolite provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs. I used to have 441 heads and went with the 43 plug when i ran nitrous. 5. $49.99. is this true? Please Note: These Spark Plugs will not work with 351C engines. i have e7's still. Cold Spark Plugs. Replies: 1 These spark plugs are OEM-style replacements that will restore your fuel economy and help you get smoother acceleration and quicker starts! I have afr 165 heads with autolite 3924 spark plugs and a 100 whp wet shot of nitrous. They contain an Yttrium-enhanced alloy, which enables up to 8 percent reduction in side wire temperatures for improved durability and less preignition. Free shipping . My fuel and nitrous jets are right, 52 nitrous and 32 fuel. Completely stock bottom end here. 4. 5 Stars, 3 product ratings 3. I always found Autolite Race plugs to last the longest before performance started to fall off, but NGK's cost half as much, and last almost as long. I think Im gonna save up for the denso irridium set. Gapping the plugs to your engine’s specifications is important to prevent pre-ignition, detonation, fouling and poor fuel economy. Autolite 103 for up to a 150 shot, AR94 up to a 250 shot. $32.99. Autolite spark plugs are the best alternative to original equipment spark plugs, offering original equipment form, fit and function for all makes and models, both foreign and domestic, at a value price. Are the Autolite 3924's good for nitrous use?? However, a plug may fit hundreds of engines, from cars to golf carts. Plug: NGK TR55 (stock number 3951); NGK TR55IX (stock number 7164); Autolite 764; Champion RS14YC6 (stock number 13); Denso IT-16 (stock number 5325) Nitrous (one step colder) Autolite spark plugs traditionally leave the factory pre-gapped for their most popular application. 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