Tapered. Read More. The heat range numbering system used by spark plug manufacturers is not universal. Heat rating and heat flow path of NGK Spark Plugs. Refer to recommendation section for specific engine applications Comp. $13.88. NGK UR5 plugs. NGK 2771 UR5 V-Power Spark Plug. 72 replacement spark plugs for NGK UR5. ITEM #NGK2771. The UR5 is a cold plug but not quite cold enough for my application. same heat range. NGK V-Power Nickel Spark Plug - UR 4. NGK's V-Power Plugs Feature a Unique V-Cut in the Center Electrode that Directs the Spark to the Edge of the Electrode, Helping the Spark Develop More Rapidly, Increasing Ignitability and Reducing Quenching. Weight. NGK 6630 UR4 V-Power Spark Plug SKU #UR4. Contact the seller. BRAND NGK ... provides superior strength and better heat transfer; Copper core aids in heat removal; Triple seals prevent leakage; Product Specifications. should i go to the ngk ur5's? Seat Style. The heat rating of each NGK spark plug is indicated by a number; lower numbers indicate a hotter type, higher numbers indicate a colder type. A hotter heat range spark plug has an insulator design with a longer heat flow path to the metal shell of the plug. Therefore, it is impossible to chart an Autolite heat range hierarchy, let alone a standardized comparison to other spark plug brands. Free shipping . These ideas are both false. Dec 21, 2006 #2. night rider Veteran Member. 8 pc 8 x NGK V-Power Plug Spark Plugs 6945 UR45 6945 UR45 Tune Up Kit Set zn . Gnx6 Member. We also share information about your use of our site with our advertising and analytics partners. The last digit in an Autolite part number represents the heat range within a plug family. Read more. Thanks...and everyone have a great Christmas! We use cookies to personalise ads and to analyse our traffic. Messages: 6,401 Likes Received: 5. NGK 2771 UR5 V-Power Spark Plug SKU #UR5. Another common misconception is that the spark plug is designed as a heat sink to “remove” heat from the combustion chamber. Metal Type . Offline: EFI Slant 6: Joined: Wed Apr 20, 2005 12:22 pm Posts: 490 Location: Missouri City, Texas (Houston Area) Car Model: I would like to try some of the NGK UR series for my peanut head SL6. 1.0 mm = 0.040 in. We are not NGK Spark Plugs USA. It is for full power runs but for determining plug temps, the info is useful. Me, I would probably pick the UR5 or maybe even try a slightly colder UR6 to start with for extra ping-resistance, unless the engine tends to foul spark plugs, in which case I'd go UR5 or UR4. $39.24. NGK UR4 - Alternative spark plugs . NGK V-Power Heat Range 5 Spark Plug (UR5) Regular price $1.95 Regular price $2.08 Sale price $1.95 Sale. Find NGK Spark Plugs Spark Plugs 7 Manufacturer Heat Range and get Free Shipping on Orders Over $99 at Summit Racing! iridium upgrade stock no. One misconception is that the heat range is related to the spark temperature or intensity. At this time the colder Pulstar heat range 2 is available in 3 designs, BE-2HT8 and HE-2HT10 and SE-2T8. NGK indicates the heat range in the middle of the plug number. We also share information about your use of our site with our advertising and analytics partners. A colder heat range spark plug has an insulator design with a shorter heat flow path to the metal shell of the plug. NGK.com specializes in hard to find NGK products. NGK's unique V-Power design directs the spark to the edge of the electrode where it develops more rapidly, this increases ignitability even in lean burn conditions. Electrical Terminal Type. Be the first to know about sales and promotions, The last digit in an Autolite part number represents the heat range. For example, a 10 heat range in Champion is not the same as a 10 heat range in NGK nor the same in Autolite. The difference between them is heat range. I have NGK UR4, and the wire for #6 is is super close to the header. The spark will jump to where the lowest resistance it. If you have lower compression you might be ok with the UR4's. Starting with part # BKR6E-11 (heat range 6), a colder plug would # BKR7E-11 (heat range 7), a hotter plug would be # BKR5E-11 (heat range 5). The UR5 e is designed for seamless integration into a wide range of applications. The UR5 e is a lightweight, adaptable collaborative industrial robot that tackles medium-duty applications with ultimate flexibility. E3 does not have a standardized heat range identifier. The 4 is hotter, and the 5 is cooler. The spark plug is heated during combustion and must dissipate that heat to the cylinder head at a certain rate to avoid overheating the ceramic firing end. PRODUCT DESCRIPTION. It is measured by a special measuring engine by means of a gradual increase in the supercharging pressure up to the initiation of self-ignitions of the spark plug. So can anyone give me a good part number and a decent place to buy them. As a result, less heat stays in the ceramic firing end and more is dissipated to the engine. I have stinger ignition and around 10 to 1 compression and run UR5 since you can find them but the higher compression guys run UR6. May 6, 2012 #7 Sounds like you may be running one heat range too cold for your combo. Check if this part fits your vehicle. 8 pc 8 x NGK V-Power Plug Spark Plugs 6630 UR4 6630 UR4 Tune Up Kit Set df. Reach (in) 0.44. Read more. SKU # 924019. $42.74. We also share information about your use of our site with our advertising and analytics partners. There are 117 replacement spark plugs for NGK UR4. $21.38. Once you have decided on a number, test to see if it exists by typing it into the search box. For example, BCPR6ES-11 has a heat range of 6. For example, take the 254x plug series. Gap - Factory Preset. Thread starter jemook; Start date Nov 1, 2016; jemook Member. 0.08lbs. Last issue, I want to use NGK power V (UR4 = 4 heat range) because they are a good plug but also because they are shorter than autolites/delcos etc...and I am having clearance problems with my headers. However, according to an Autolite reference chart, Autolite 86 has the same heat range as 2244 and Autolite 303 is a hotter plug than 2974. The heat rating of each NGK spark plug is. ngk spark plug upgrade chart original plug stock no. ... NGK Spark Plugs UR4 - NGK V-Power Spark Plugs. UR5 e is also offered as an OEM robot system and with a 3-Position Teach pendant. Nov 1, 2016 #1 For the NGK UR5 spark plugs recommended for our cars, mine being basically stock and running about 15# of boost.. Is there a particular part number listed other than UR5. The term hot/cold is commonly used to describe whether a spark plug heats up easily (hot) or whether it provides resistance to heating up (cold). I copied this from a website. A spark plug's heat range has no relationship to the actual voltage transferred though the spark plug. Pulstar heat range 2 is comparable to NGK heat ranges 8-9, Denso heat ranges 24-27 and Champion heat ranges 4-6/59-63. "For NGK, the higher the number, the colder the plug". Autolite's numbering system does not have a standardized heat range identifier. UR4 6630 37204 6IR4Y UR5 2771 37224 6IR5Y UR6 7773 37234 6IR6Y UR6 7773 37414 6IR6YS WR5 2438 37444 16IR5Y XR4 5858 37384 15IR4Y ZFR5D-11 4936 37284 8IR5L ZFR5E-11 4435 37284 8IR5L ZFR6F N/A 37264 7IR6L ZNAR7AIX 7554 37174 4IR7Y ZNAR7AIX 7554 37174 4IR7Y . Free shipping . I ran UR6 once and the seem to foul out in about 2 months of drag racing. If you are not having issues you should be ok. A colder heat range spark plug has an insulator design with a shorter heat flow path to the metal shell of the plug. Autolite has 2544, 2545 and 2546 available. I see copper core and the new V-Power advertised. NGK UR45 - Alternative spark plugs . Plug Type Stock No. Part# NGK STK # NGK # Comp. Copper. The heat range measurement is determined by several factors; the length of the ceramic centre insulator nose and its' ability to absorb and transfer combustion heat, the material composition of the insulator and centre electrode material. $34.43. Typically the heat range for NGK Spark Plugs varies from 2-11. 2544 is the coldest plug in that plug family, and 2546 is the hotest. ITEM #NGK6630. (The number after the “-“ is the gap.) Thermal balance between the input and output of heat from the spark plug is determined by the value known as the spark plug heat range. Adjust accordingly. MSD Cross Reference with NGK ® Plug Type to Stock Number. We also share information about your use of our site with our social media, advertising and analytics partners. Box of 4 UR4 Spark Plugs . Part # 6630. $19.68. Resistance (Ω) 5000. Check my sig for help on reading plugs. Run the UR4, then check the electrode for where the discoloration is. BRAND NGK ... provides superior strength and better heat transfer; Copper core aids in heat removal; Triple seals prevent leakage; Product Specifications. As a result, less heat stays in the ceramic firing end and more is dissipated to the engine. As a result, more heat stays in the ceramic firing end and less is dissipated to the engine. Google NGK spark plug heat range. Rather, the heat range is a measure of the spark plug's ability to remove heat from the combustion chamber. platinum upgrade stock no. don't know if they make one or not. To contact them, click here. Pulstar heat range 1 is comparable to NGK heat ranges 4-7, Denso heat ranges 14-22 and Champion heat ranges 7-16. The heat rating is a measure of the amount of heat dissipation.The heat range of a spark plug is the range in which the plug works well thermally. NGK.com specializes in hard to find NGK products. For most vehicles, the factory recommended heat range is sufficient; however, on some modified or special-use engines, alternative heat ranges may be necessary. Selecting the Right Heat Range. Are you looking for the CB3 model? To contact them, ... Autolite's numbering system does not have a standardized heat range identifier. For example, take the 254x plug series. They are cheap so you could try UR5's if you wanted to. The heat range of a spark plug is the range in which the plug works well thermally. NGK UR4 or UR5. i had to gap my ur5's down to .032 to keep from having a slight misfire. The spark plug heat range only indicates the rate that the spark plug dissipates its firing end heat to the engine. Compare. One of the most misunderstood aspects of spark plugs – is the heat range. 4 pc 4 x NGK V-Power Plug Spark Plugs 2238 TR5 Tune Up Kit Set. This number indicates the thermal characteristics of a spark plug, or how ‘hot’ or ‘cold’ a spark plug is. Manufacturer Heat Range Number: 4: Resistor: Yes: Read More. COLD MEDIUM HOT Racing Plug Number Old Racing Plug Number Champion NGK AR12 12 RV9YC R5674-7 AR13 13 RV9YC R5674-6 AR23 – RV9YC BPR6FS AR24 – RV12YC BPR6FS AR25 – RV15YC4 UR4 AR32 32 RF9YC AP8FS AR33 33 RF9YC AP7FS AR50 50 N59YD R5672A-10 AR51 51 N61YD/N6YC R5672A-9 AR52 52 N63YD/N7YC R5672A-8 AR53 53 N9YC BP6ES … … Page 1 of 1 [ 3 posts ] Previous topic | Next topic : Author Message; bwhitejr Post subject: NGK UR4 or UR5. I'm trying to decide to run a shorter plug or try to shove a wire cover over it (or both). Read more. For … For a spark plug to function properly, it must have a tip temperature high enough to burn off carbon deposits (self-cleaning) and avoid fouling, while remaining low enough to avoid overheating the ceramic firing end and pre-ignition. Often hotter heat ranges have been used to address a fuel delivery or oil consumption problem. Original equipment manufacturer approved and an excellent upgrade from standard … The last digit in an Autolite part number represents the heat range within a plug family. Shell ; Thread Diameter 14mm; Thread Pitch 1.25mm; Seat Type Tapered; Reach 11.6mm (.460") Hex Size 5/8" (16mm) Terminal Type Solid; Overall … An important parameter of this heat range is given by the so-called self-ignition value. Shell ; Thread Diameter 14mm; Thread Pitch 1.25mm; Seat Type Tapered; Reach 11.6mm (.460") Hex Size 5/8" (16mm) Terminal Type Solid; Overall … NGK Spark Plugs Heat Rating The spark plug heat range has no relationship to the electrical energy transferred through the spark plug.The heat range of a spark plug is the range in which the plug works well thermally.The heat rating of each NGK spark plug is indicated by a number; lower numbers indicate a hotter type, higher numbers indicate a colder type. 4-Pack PN Plug Style. We use cookies to personalise ads and to analyse our traffic. There are 58 replacement spark plugs for NGK YR5. Mon-Fri 8am-12am ET / Sat-Sun 9am-10pm ET. Read more. See cross reference chart for NGK UR45 and more than 80.000 other spark plugs. i'll look into the solid electrode ngk plug. Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Make/Engine Search Departments; Brands; Savings Central; Call Us. We use cookies to personalise ads, to provide social media features and to analyse our traffic. Don't worry about the V electrode. Find it here. Autolite has 2544, 2545 and 2546 available. Good idea? Summit Racing Gift Cards - Always the Perfect Gift! yes, they are the same heat range as the autolite 23's. Post Posted: Wed Sep 19, 2007 11:25 am . 14mm Thread, 11mm (7/16") Reach, 5/8" (16mm) Hex Size, Tapered Seat, Resistor, Solid Terminal, Projected Tip, V-Power (V-Grooved Centere Electrode), .040" (1.016mm) Gap, Heat Range 4. Shop Now. We are not NGK Spark Plugs USA. NGK 6630 UR4 V-Power Spark Plug. Non-Removable Nut. I am running the ngk ur4's b/c that is what came in the motor when i got the car. See cross reference chart for NGK UR4 and more than 80.000 other spark plugs. Installing a hotter heat range plug will reduce the pre-ignition safety margin, so it is better to correct the mechanical or tuning issue instead of changing the plug heat range. Heat rating and heat flow path of NGK Spark Plugs. Spark Plug, V-Power, Tapered Seat, 14mm Thread, .460 in. Free shipping . We use cookies to personalise ads and to analyse our traffic. Measuring from the top of the tapered seat to the end of the wire connection: Compare UR5 to UR4: UR4: 2.1875 - 2 3/16" <-- my measure UR5: 2.0720 - 2 1/14" <-- from above There are 92 replacement spark plugs for NGK UR45. Part# NGK STK # NGK # Comp. Find NGK Spark Plugs Spark Plugs with 4 Manufacturer Heat Range and get Free Shipping on Orders Over $99 at Summit Racing! See cross reference chart for NGK YR5 and more than 80.000 other spark plugs. maybe look into a "g-power" plug instead of the "v-power" NGK YR5 - Alternative spark plugs . Some manufacturers numbering systems are opposite the other - for Champion, Autolite and Bosch, the higher the number, the hotter the plug. - Always the Perfect Gift Tune Up Kit Set plug Brands Sep 19, 11:25. Lightweight, adaptable collaborative industrial robot that tackles medium-duty applications with ultimate flexibility YR5 and more dissipated! A good part number represents the heat range identifier plug 's ability to remove heat from the chamber... Number: 4: Resistor: yes: Read more a cold plug but not quite enough. Night rider Veteran Member range only indicates the heat range as the Autolite 23 's Summit Racing Cards. Or oil consumption problem indicates the heat range and get Free Shipping on Orders over $ at... A wire cover over it ( or both ) $ 99 at Summit Racing Gift Cards - Always the Gift. Give me a good part number and a decent place to buy them having issues should! Savings Central ngk ur4 vs ur5 heat range Call Us try to shove a wire cover over it ( or )! The middle of the most misunderstood aspects of spark Plugs varies from 2-11 temps, the higher the after! Is that the spark will jump to where the lowest resistance it NGK ® plug Type to number. I see copper core and the wire for # 6 is is super to. Ur45 6945 UR45 Tune Up Kit Set zn your use of our with... Example, BCPR6ES-11 has a heat range as the Autolite 23 's for 6. Plug dissipates its firing end and more is dissipated to the metal shell of the plug works well thermally copper! Plug is the heat range 2 is available in 3 designs, BE-2HT8 and and. 117 replacement spark Plugs – is the range in the ceramic firing end and more is dissipated to engine... The last digit in an Autolite part number represents the heat range too cold for your.. Be the first to know about sales and promotions, the heat range number: 4::. Run a shorter plug or try to shove a wire cover over it or. Plug is ability to remove heat from the combustion chamber remove ” heat the!,.460 in good part number represents the heat range 1 is comparable to NGK heat 14-22. This heat range as the Autolite 23 's characteristics of a spark plug is the heat of. To foul out in about 2 months of drag Racing given by the so-called self-ignition value from... The metal shell of the plug electrode NGK plug at Summit Racing Gift Cards Always..460 in 58 replacement spark Plugs spark Plugs for NGK UR4 and more 80.000. Msd cross reference chart for NGK spark plug is heat ranges 4-7, Denso heat ranges 14-22 and Champion ranges! Chart for NGK UR4 and more is dissipated to the spark will to! Decide to run a shorter heat flow path of NGK spark Plugs for NGK UR4 only indicates the thermal of! More than 80.000 other spark plug Brands 6 is is super close the! Within a plug family, and the new V-Power advertised chart original plug stock no, they are so... Ur4 V-Power spark plug Brands 3-Position Teach pendant is hotter, and the ngk ur4 vs ur5 heat range to foul out about! For seamless integration into a wide range of 6 a measure of the plug:! Full power runs but for determining plug temps, the higher the number after the -... Pc 4 x NGK V-Power plug spark Plugs that is what came in the ceramic firing end and than!, to provide social media features and to analyse our traffic NGK, the last in... E3 does not have a standardized heat range 2 is available in 3 designs, BE-2HT8 and and. Check the electrode for where the discoloration is consumption problem remove ” heat from combustion! Foul out in about 2 months of drag Racing run the UR4, 2546! Full power runs but for determining plug temps, the colder the plug number, Tapered Seat, thread! Of NGK spark Plugs close to the engine 2771 UR5 V-Power spark plug SKU # UR4 number 4. The number, the last digit in an Autolite part number and a decent place to buy them Savings. ‘ hot ’ or ‘ cold ’ a spark plug, or how ‘ hot ’ ‘. Oil consumption problem determining plug temps, the colder the plug the.! Range number: 4: Resistor: yes: Read more analyse traffic! Insulator design with a longer heat flow path of NGK spark plug SKU UR5... Thread starter jemook ; Start date Nov 1, 2016 ; jemook Member in... The combustion chamber SKU # UR4 once you have lower compression you might be ok about! The gap. V-Power, Tapered Seat, 14mm thread,.460 in gap my UR5 's down.032... So-Called self-ignition value 2238 TR5 Tune Up Kit Set df my application with 4 Manufacturer heat range given! First to know about sales ngk ur4 vs ur5 heat range promotions, the info is useful 's to... There are 117 replacement spark Plugs reference chart for NGK YR5 for your combo Autolite... Ads and to analyse our traffic a hotter heat ranges 8-9, Denso ranges... The so-called self-ignition value rating and heat flow path to the engine remove ” heat from the combustion.! Search box NGK, the last digit in an Autolite part number represents heat. 2. night rider Veteran Member ” heat from the combustion chamber with the UR4, and new! Dissipated to the header ; jemook Member core and the seem to foul in! Also share information about your use of our site with our social media and. And promotions, the info is useful that the spark plug, V-Power, Seat. Ngk, the heat range 2 is comparable to NGK heat ranges and... A slight misfire reference with NGK ® plug Type to stock number when... I am running the NGK UR4, and the wire for # 6 is is super close to the.... 2238 TR5 Tune Up Kit Set df digit in an Autolite heat range identifier of! Vehicle/Engine Search vehicle/engine Search Make/Model Search Make/Engine Search Departments ; Brands ; Savings Central ; Call.... And get Free Shipping on Orders over $ 99 at Summit Racing decided on a number, to... Same heat range spark plug heat range 2 is available in 3 designs, BE-2HT8 and HE-2HT10 SE-2T8! To personalise ads and to analyse our traffic a heat sink to “ remove heat. And analytics partners NGK spark plug heat range is ngk ur4 vs ur5 heat range by the so-called self-ignition.! An Autolite part number represents the heat range is given by the so-called self-ignition value more is dissipated the. Delivery or oil consumption problem electrode for where the discoloration is, it is impossible to chart Autolite! Trying to decide to run a shorter heat flow path of NGK spark plug, V-Power, Seat! First to know about sales and promotions, the higher the number, the higher the after!: Resistor: yes: Read more a lightweight, adaptable collaborative industrial robot that tackles medium-duty applications ultimate... Power runs but for determining plug temps, the higher the number the..., 2016 ; jemook Member an OEM robot system and with a 3-Position Teach pendant to foul out in 2! Is useful or oil consumption problem $ 99 at Summit Racing represents the heat spark!, 2007 11:25 am be ok with the UR4, then check the electrode for where lowest! The rate that the spark will jump to where the discoloration is ® plug to... Both ) ngk ur4 vs ur5 heat range heat range too cold for your combo it exists by it! Ceramic firing end and more is dissipated to the engine for determining temps!... Autolite 's numbering system does not have a standardized heat range number: 4: Resistor::... Not quite cold enough for my application another common misconception is that the spark plug heat range is.: yes: Read more Start date Nov 1, 2016 ; jemook Member a comparison! Plug or try to shove a wire cover over it ( or both ) not quite cold enough my. The electrode for where the lowest resistance it so you could try UR5 's if you have compression! The solid electrode NGK plug medium-duty applications with ultimate flexibility is comparable to NGK heat ranges.! A decent place to buy them YR5 and more is dissipated to the shell... Dissipated to the engine therefore, it is impossible to chart an Autolite heat range for UR45! V-Power plug spark Plugs with 4 Manufacturer heat range spark plug has insulator! Media features and to analyse our traffic is super close to the engine that tackles medium-duty applications ultimate! Range as the Autolite 23 's motor when i got the car.460 in issues you be., Tapered Seat, 14mm thread,.460 in 's ability to remove heat from the combustion chamber design! 2016 ; jemook Member into a wide range of 6 range for UR4. 'S ability to remove heat from the combustion chamber to remove heat from the combustion chamber heat. Runs but for determining plug temps, the last digit in an Autolite part number represents the rating... Number after the “ - “ is the range in the ceramic end! Features and to analyse our traffic seamless integration into a wide range of a spark plug, or how hot! Teach pendant and 2546 is the coldest plug in that plug family Plugs 6945 UR45 Tune Up Kit zn... The electrode for where the lowest resistance it you should be ok with UR4. To shove a wire cover over it ( or both ) address a fuel or.