Catalog: Spark Plugs 2008/2009
Company/Brand: Denso
spark plug heat range in Spark Plugs 2008/2009 by Denso
14 http www.globaldenso.com/plug the finer the center electrode the ... electrode greatly reduces the necessary spark voltage and improves ignitability ... development of new iridium alloy for spark plug electrodes invention of an iridium ... spark plug with high performance and long life ... addition to two other members point 1 spark example platinum plug 1.1 mm diameter ... point 2 ignition example platinum plug 1.1 mm diameter large quenching cooling ... that fits with most of the world s spark plug cables please remove the nut for ... built-in highly reliable resistor all plugs include a highly reliable 5,000 ... may affect electronic devices for all plug types 0.4 mm diameter 0.4 mm diameter ... quenching effect flame kernel regular plug 1 highly corrosion resistant burnished ...

16 http www.globaldenso.com/plug 0.4mm iridium only at denso 0.4mm the ... center electrode a next-generation plug that draws out engine evolution with a ... high-performance spark improved acceleration revving up plug ... that fits with most of the world s spark plug cables please remove the nut for ... more than with conventional type plugs this improves both acceleration ... built-in highly reliable resistor all plugs include a highly reliable 5,000 ohm ... may affect electronic devices for all plug types 0.4 mm diameter ultra-fine ... of voltage necessary to cause the spark and greatly improves ignitability ... resistant burnished nickel plating the plug housing is plated with burnished nickel ... the same as plugs used for racing it is highly resistant ... and during motocross events lowheat range types excluded u-groove ground ...

18 http www.globaldenso.com/plug lineup ikh series 14 mm dia 26.5 mm ... and above are for tuned engines with a spark gap of 0.8 mm ik16g ik20g and ik22g ... at the same time ikm l is extended type spark position 5 mm iq series mainly used for ... and above are for tuned engines with a spark gap of 0.8 mm vq16 vq20 and vq22 are ... whereas iw24 to 34 are focused on heat resistance with a projection of -1.5 mm ... the spark position of iw24 to 34 is projected 0. ... version of the iwm01m iridium racing plugs sold as street-use plugs for 2-cycle ... short reach type iwf27 utilizes the heat resistance of the iridium electrode to ... extend the spark position 0.5 mm 1.0 1.5 mm harnessing ... type designed so that the head of the plug is 6 mm higher than in the itv use with ... fully projected 1.5 mm creating a wide heat range and greater ignitability 16 mm ...

http www.globaldenso.com/plug 19 ix-b series 12 mm dia l19 mm length ... 0.9 mm 0.6 1.5 mm resulting in a wider heat range the spark position is projected 0 ... power versions of the 2 mm shroud type plugs x24/27gpu used by honda applicable to ... the 0.4 mm iridium center electrode the spark gap is wider than in normal type a ... by making this a single electrode the spark location is stabilized compared to in ... half-threaded type using the high heat resistance of the iridium electrode the ... spark position is extended 0.4 mm compared to ... length short reach type using the high heat resistance of the iridium the spark ... voltage of the 0.4 mm dia iridium the spark gap is wider than in normal types 0.7 0 ... s first 8 mm thread diameter iridium plug can be used with honda smart dio 04 ...

24 http www.globaldenso.com/plug specifications terminal shape spark ... electrode height spark position dia reach hex gap projecion ... .9 1.3 2.8 5.0 rc 16 0.9 1.3 2.8 5.0 rc spark gap example for a 1.1 mm gap set from ... from the edge to the piston head spark position length from edge of side ... automobiles and trucks small jis-type plug mounting base 14 mm dia l19 mm vq22 can ... and trucks iso-compatible small plug mounting base 14 mm dia l19 mm vk16g ... projecting the insulator 1.5 mm the heat range is widened and ignitability is ...

http www.globaldenso.com/plug 27 is recommended for the following ... acceleration with 0.4 mm denso racing plugs denso would like you to try the 0.4 mm ... -fine 0.4 mm diameter center electrode plugs are the realization of superb ignition ... increasing enginen output normal race plug 0.8 mm electrode the data shown is ... studies also the regular racing plug referred to here is a denso product ... water cooled 2 cylinder regular race plug 0.8 mm electrode the data shown is ... studies also the regular racing plug referred to here is a denso product ... in 4th gear how to choose a racing plug warning on choosing the right racing ... plug generally electrodes that project into ... because ground electrode becomes longer heat resistance and durability decrease the ... increased so does the need for higher heat range overall shape electrode shape ...
http www.globaldenso.com/plug 29 cross reference ngk figure dia mm ... in terms of installation m show the heat range ...
32 http www.globaldenso.com/plug ignition tech q&a about tuning cars i ... installed giving a 200ps output which plug is good for a car such as this what is ... the optimum heat range for a tuned up golf4 gti 1.8l turbo ... described in the question the right plug should be around ik iq 22 24 or 27 here ... than the 01 type but because the spark position is withdrawn compared to the ... 01 type only consider this plug for racing applications it s difficult ... to give a heat range based on going from 150ps to 200ps ... you judge the condition of your current plugs and judge for yourself but as a general ... improve starting and low speed feel the heat range is different depending on how the ... and how it s used using an increase in heat range of 1 or 2 as a starting point ... decide on a heat range always looking at the condition of your ...

http www.globaldenso.com/plug 33 about about motorcycles q.1 a how is ... these vehicles frequently use a low heat range the heat ranges available for ... with downsizing of the space to install plugs in trial vehicles demand for miniature ... plugs is increasing in these cases try the ik ... types however the space between the plug cable and the insulator will require ... q.4 a the terminal on the end of the plug is frequently unnecessary on motorcycle ... -cycle conditions comes standard with a plug terminal not including combined types ... is because some of the other companies plug cords require a terminal and at denso ... every customer in 4-cycle engines a spark is produced for every 2 revolutions of ... in the engine in 2-cycle engines a spark is produced for each revolution of the ...

36 http www.globaldenso.com/plug identifying denso plugs iridium plugs ... platinum plugs normal plugs s w k 16 20 e xr pr -u -a 11 11 type of ... 0.7 mm diameter platinum p platinum plug s 0.7 mm diameter iridium sv 0.4 mm ... iridium z 0.55 mm diameter iridium heat range reach electrode position 7.0 mm ... d projected 1.5 mm projection spark position 3.5 mm shroud 25 e projected ... 1.5 mm projection q projected 2mm spark position 3.5mm r 5k resistor plug s ... 1820.6 reach 12 mm j 1420.6 projected plug k 1426.0 iso small hex plug kj 1416.0 ... iso projected small hex plug lp 1420.6 plug for lpg applications n ... 1016.0 q 1416.0 small hex plug qj 1416.0 projected small hex plug ql ... 1420.6 small hex long housing plug s 1420.6 surface gap or rotary t 1416 ...

38 http www.globaldenso.com/plug 03 how to choose a plug various ... are rough measures for choosing a plug for example if strenuous driving is ... continued for a long time using normal plugs the plug will overheat this is why the ... idea of a regular plug for a regular car doesn t work what s ... inspect the condition of your current plugs and then choose a plug accordingly heat ... range the heat range will change with the seasons when the ... times like this it s better to choose a plug with a higher heat range application ... is increased the higher the required heat range if the horsepower has been ... such cases it is necessary to choose a plug with a higher heat range and a higher ... level of heat resistance 31 27 24 22 20 to prevent ...

40 http www.globaldenso.com/plug warnings for your safety and ... before changing or adjusting the plug please switch off the engine first ... and cause damage please do not drop the plug onto a floor or similar hard surfaces ... may cause internal cracks or alter the spark gap damaging the functions of the plug ... appropriately as described when using a plug with a terminal nut when using a plug ... if the terminal nut is crimped onto the plug the nut may loosen during use due to ... tighten it securely if you use the plug with a loose terminal nut it may be a ... of engine malfunction when to replace spark plugs if the center electrode tip ... a rounded shape it is possible that the sparks it produces are not fully efficient ... recommend the regular replacement of spark plugs service lifetime is a guideline ...