spark plug recommendations

[240srdet]

i am going to be replacing the spark plugs soon on a sr20det. i was thinking about getting the oem 91 sentra se-r from the nissan dealer (http://www.240sxforums.com/forums/showthread.php?p=1206001#). is there any name brand recommendations such as ngk (http://www.240sxforums.com/forums/showthread.php?p=1206001#). part numbers would be excellent. iridium? copper? platinum? i want something with a good spark and not have to be replaced every other month.

[Dousan_PG]

BKR7E

thats it.

[jspaeth]

i am going to be replacing the spark plugs soon on a sr20det. i was thinking about getting the oem 91 sentra se-r from the nissan dealer (http://www.240sxforums.com/forums/showthread.php?p=1206001#). is there any name brand recommendations such as ngk (http://www.240sxforums.com/forums/showthread.php?p=1206001#). part numbers would be excellent. iridium? copper? platinum? i want something with a good spark and not have to be replaced every other month.

every other month??? are you nuts?

what kind of shit are used to using....?

^ like Dousan said those are pretty much the way to go with SRs...cheap enough that you can swap 'em out whenver you want

[fliprayzin240sx]

I used to use NGK BCPR7ES-11, get the whole box set for like $22 and theres like 10 of them. Gap them down to .030 and changed them every other oil change.

[Vayber]

I have Denso Iridium on mine and work like a charm a bit pricey, but you get the bang for your buck.

[johngriff]

The NGK Iridium in the BK and BCP series in ranges 7,8 and 9 are the same as the japanese Iritop,Iriway plugs. The rest of the Iridium line is garbage though.

BKR7(8 or 9)E-IX for sr http://www.sparkplugs.com/results_cross.asp?pid=bkr7e-ix&x=0&y=0
BCPR7(8 or 9)E-IX for CA and RB

FAQ Page: http://www.sparkplugs.com/glossary.asp?kw=Can+I+Get+NGK+IRIWAY,+IRITOP,+IRIM AC+or+IRIMAX+plugs.&manID=0&pt=

[Koopa Troopa]

I use the $2.00 NGK-R coppers for CA20ET/ VG30ET/ RB20ET

[SHIFT_*grind*]

BKR7E

thats it.

Yep.

Get copper plugs if you want the best spark and don't mind replacing them a little more often. Get platinum plugs if you hate changing them and want them to last a really long time, and don't care as much about the spark. Get iridiums if you're somewhere in between.

[Rayne]

BKR7E

thats it.

+1

What more is there to be said.

[used240sxparts]

This has been covered many times!!! SEARCH

[tougemaster]

Ngk Bcpr7es-11

[johngriff]

those work in your sr?

[RedtopTech]

There are certain situations were an iridium plug is ideal. Anytime an engine see's high cylinder pressure (ie. High compression, Nitrous, forced induction) there is more resistance against the plug to bridge the gap. When missfires accur it is common practice to shorten the plug gap which makes it easier to bridge the gap. While this may initialy solve the problem there are some downsides. With a smaller gap, the flame kernal becomes smaller which can result in an incomplete burn (reducing power and waisting fuel).
While iridium may have a lower conductivity then copper, the 1mm center electrode (copper plugs have a 3mm electrode) makes bridging the gap much easier therefore a larger gap may be utilized.
Although platinum plugs also have a 1mm electrode the tips have proven to be to soft to survive high cylinder pressures. You wouldnt want that tiny piece make its way through the cylinder and out the exhaust valve only to knock into a turbine blade spinning in excess of 150,000rpm would you?

[brndck]

BKR7E

thats it.
+1
ngk's are bestest.

[johngriff]

There are certain situations were an iridium plug is ideal. Anytime an engine see's high cylinder pressure (ie. High compression, Nitrous, forced induction) there is more resistance against the plug to bridge the gap. When missfires accur it is common practice to shorten the plug gap which makes it easier to bridge the gap. While this may initialy solve the problem there are some downsides. With a smaller gap, the flame kernal becomes smaller which can result in an incomplete burn (reducing power and waisting fuel).
While iridium may have a lower conductivity then copper, the 1mm center electrode (copper plugs have a 3mm electrode) makes bridging the gap much easier therefore a larger gap may be utilized.
Although platinum plugs also have a 1mm electrode the tips have proven to be to soft to survive high cylinder pressures. You wouldnt want that tiny piece make its way through the cylinder and out the exhaust valve only to knock into a turbine blade spinning in excess of 150,000rpm would you?





What are you trying to say? I find your statements incredibly contradictory to each other, leaving me at a loss of comprehension.

Big gap > Small Gap?

Smaller tip is soft yet you wouldn't want it to break apart? Obviously.

Otherwise... huh?

[RedtopTech]

Pardon me, a larger gap is ideal for complete combustion however there is a point were the gap will be to large and result in a missfire. The largest gap which can be maintained without missfire is ideal. An iridium plug can maintain a larger gap due to the smaller center electrode.
Although the platinum is soft enough to potentialy break off, it is still a piece of metal larger than a grain of sand and can damage valve's, valve seats, combution chambers and turbine blades.

[JoHn E]

my bad for bringing this back but the 7 are for SRs right?

im looking at the ngk site (i got an NA KA) and they are recommending 5s

[Sileighty_85]

http://www.ngk.com/charglossary.asp?kw=Heat+range

[khilgers]

I run NGK BCPR7ES, gapped at .028. I change them out before and after each event. At about $18 for a box it doesn't make a very large dent on the wallet.

[sidewaysil80]

bkr7e11's ftw

[240trainee]

BKR7E

thats it.

Game over, Game over, Game over.