denso iridium spark plugs - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

buku_points · 05-25-2006, 04:49 PM

is anyone running the denso iridium spark plugs? are they better than the ngk iridium plugs? im running 12 lbs on a 95 sr20det with t28 bb turbo. ive already searched the forums and found nothing. any info would be thankful.

Ragnarok043 · 05-25-2006, 07:43 PM

i think the Denso plugs have a smaller center electrode which means less voltage required to spark.

dct223 · 05-25-2006, 10:46 PM

dont use denso.. unless you want to blow a good motor..

friend used densos on his S14 sr... not even full boosting an electrode broke into the #1 cylinder and yeah.. something so small blew the motor, scraped up the cylinder walls, dented the head where teh valves are and also bent a vlave.

another friend had them in his EF civic with a d16.. He thought it was weird how one sprark plug wire was always popping off, he removed the spark plug to find out that the whole thing electrode and the white part were moving up and down, and if he didnt catch it it would have eventually broken off and blow the motor...

ever since TWO people i know had problems with denos, never wanted to use them.

NGK-R FTW

mjjstang · 05-25-2006, 10:57 PM

yes ive heard horror stories with denso. im using ngk iridiums. Good stuff.

Ricks15 · 05-25-2006, 11:02 PM

Nissan='s NGK

carkid0007 · 05-25-2006, 11:44 PM

So which NGk's do you reccommend ? I have the denso iridiums in now but havnt started the motor yet, just got it swapped, and if possible I won't use them if they are bad as you guys say.

mjjstang · 05-26-2006, 08:40 AM

7 heat range gapped to 28 I believe. I had something like the brk7xxxxxxx but there is one out there that is pregapped to .28 i believe. the ones I had at first had to be gapped down to .28, but you dont want to gap iridiums, so try to find the one that is gapped right to begin with. I had a hell of a time trying to find them, but I think it was sparkplug.com.

found it. http://www.ngk.com/results_cross.asp...7EIX&x=47&y=13 they are gapped to .30 cheapest place to get them AFAIK.

buku_points · 05-26-2006, 10:42 AM

i noticed that one coil kept popping off!!!!! i took those denso out right away!!!!! i went to use the ngk iridiums, but will it really make a diffenece? im running 12 lbs of boost, should i just buy the 92 sentra ser spark plugs or different ones?

HyperTek · 05-26-2006, 11:18 AM

im rockin these regular plugs NGK PFR5ES as this tech article suggests, http://www.royalpurple.com/dragsport1/ds1p1.html

but yet to switch over to iridiums.

spdfreek0o · 05-26-2006, 12:03 PM

I've been running denso iridiums for awhile and had no problems. I even pulled them out last week and checked them, nothing was loose and they were all still gapped pretty close to the original specs.

dct223 · 05-26-2006, 12:23 PM

Quote:

Originally Posted by spdfreek0o

I've been running denso iridiums for awhile and had no problems. I even pulled them out last week and checked them, nothing was loose and they were all still gapped pretty close to the original specs.

Yes its not like ALL DENSOS are going to be bad... you have to look at the big picture, if there are lots of people who have bad experiences with a product... the most logical thing is to find another product that is better...

but hey, if you like densos and are happy with them, no one is saying you HAVE to change them....

Ragnarok043 · 05-26-2006, 12:27 PM

Quote:

Originally Posted by dct223

dont use denso.. unless you want to blow a good motor..

friend used densos on his S14 sr... not even full boosting an electrode broke into the #1 cylinder and yeah.. something so small blew the motor, scraped up the cylinder walls, dented the head where teh valves are and also bent a vlave.

another friend had them in his EF civic with a d16.. He thought it was weird how one sprark plug wire was always popping off, he removed the spark plug to find out that the whole thing electrode and the white part were moving up and down, and if he didnt catch it it would have eventually broken off and blow the motor...

ever since TWO people i know had problems with denos, never wanted to use them.

NGK-R FTW

by any chance do you know if they tried to gap them, with such a fine tip youre not suppose to gap Iridiums and use them straight out of the box.

dct223 · 05-26-2006, 12:42 PM

Quote:

Originally Posted by Ragnarok043

by any chance do you know if they tried to gap them, with such a fine tip youre not suppose to gap Iridiums and use them straight out of the box.

not sure, but if they come pregapped, then im pretty sure they would not try to "regap" them

also what you wrote is kinda conflicting... im assuming you were trying to say that "your supposed to use them straight out of the box"

mothon · 05-26-2006, 05:45 PM

Always check the gap on any plug before you install them. Gap can change from shipping and handling.

buku_points · 05-26-2006, 06:55 PM

i bought the ngk iridium's their were originally gaped to .45 so i regaped them to .30

mjjstang · 05-26-2006, 07:45 PM

the link I showed you was for the exact ones that I use, like the guy above me, he bought the ones that part number ends in 11 which is the 45, he gapped his electrode way too much and now is running the risk of it failing IE breaking loose in the chamber and causing catastrophic engine failure, so if you want good Iridiums, (although many people swear by copper) I however noticed a HUGE in terms of "its just a spark plug what kind of difference can it make" difference, night and day engine performance difference. I got the .30 gapped ones and no need to regap them, heat range 7 for srturbo.

buku_points · 05-27-2006, 06:43 PM

yea i noticed a real big difference in power altough i did re-gap them ill end up gettig new ones soon, that part number on the website you posted, can you take that number to kregan and theyll find it?

mjjstang · 05-27-2006, 10:27 PM

no kregan around here, so i donno, maybe, I know pepboys, autozone, murrays and all the other places I tried, looked at me like I was an iditot and didnt belong in their store, then proceeded to tell me their bosh +33 was so much better with 33 differnt electrode straps. so i said fuckit and got from sparkplug.com.

buku_points · 05-28-2006, 11:44 AM

ahh oh well thanks for the info though!

Highboost180SX · 06-01-2006, 05:17 AM

what are the correct denso and NGK part numbers for the "one step colder" heat range?

Cashizslick · 06-01-2006, 05:59 AM

Quote:

Originally Posted by carkid0007

So which NGk's do you reccommend ? I have the denso iridiums in now but havnt started the motor yet, just got it swapped, and if possible I won't use them if they are bad as you guys say.

I use BKR6E's gapped to a .30

mjjstang · 06-01-2006, 06:16 AM

do you use the bkr6e with a turbo?

05-25-2006, 10:46 PM	#3
dct223 Nissanaholic! Join Date: Nov 2003 Location: hella NORCAL! Age: 39 Posts: 1,664 Trader Rating: (4) Feedback Score: 4 reviews	dont use denso.. unless you want to blow a good motor.. friend used densos on his S14 sr... not even full boosting an electrode broke into the #1 cylinder and yeah.. something so small blew the motor, scraped up the cylinder walls, dented the head where teh valves are and also bent a vlave. another friend had them in his EF civic with a d16.. He thought it was weird how one sprark plug wire was always popping off, he removed the spark plug to find out that the whole thing electrode and the white part were moving up and down, and if he didnt catch it it would have eventually broken off and blow the motor... ever since TWO people i know had problems with denos, never wanted to use them. NGK-R FTW __________________ Sfourteen

05-25-2006, 10:57 PM	#4
mjjstang Post Whore! Join Date: Apr 2003 Location: Michigan Posts: 2,654 Trader Rating: (5) Feedback Score: 5 reviews	yes ive heard horror stories with denso. im using ngk iridiums. Good stuff. __________________ I was going to, but I can not think of a sig less than 75 characters.

05-25-2006, 11:02 PM	#5
Ricks15 Nissanaholic! Join Date: Apr 2005 Location: Los Angeles, CA Age: 39 Posts: 1,661 Trader Rating: (1) Feedback Score: 1 reviews	Nissan='s NGK __________________

05-26-2006, 08:40 AM	#7
mjjstang Post Whore! Join Date: Apr 2003 Location: Michigan Posts: 2,654 Trader Rating: (5) Feedback Score: 5 reviews	7 heat range gapped to 28 I believe. I had something like the brk7xxxxxxx but there is one out there that is pregapped to .28 i believe. the ones I had at first had to be gapped down to .28, but you dont want to gap iridiums, so try to find the one that is gapped right to begin with. I had a hell of a time trying to find them, but I think it was sparkplug.com. found it. http://www.ngk.com/results_cross.asp...7EIX&x=47&y=13 they are gapped to .30 cheapest place to get them AFAIK. __________________ I was going to, but I can not think of a sig less than 75 characters.

05-26-2006, 11:18 AM	#9
HyperTek Post Whore! Join Date: Mar 2003 Location: Cali Posts: 13,224 Trader Rating: (3) Feedback Score: 3 reviews	im rockin these regular plugs NGK PFR5ES as this tech article suggests, http://www.royalpurple.com/dragsport1/ds1p1.html but yet to switch over to iridiums. __________________ Keep it Classy

05-25-2006, 04:49 PM	#1
buku_points Zilvia Addict Join Date: Mar 2006 Location: Cali Posts: 989 Trader Rating: (16) Rides Gallery: buku_points Feedback Score: 16 reviews	denso iridium spark plugs is anyone running the denso iridium spark plugs? are they better than the ngk iridium plugs? im running 12 lbs on a 95 sr20det with t28 bb turbo. ive already searched the forums and found nothing. any info would be thankful.

05-25-2006, 07:43 PM	#2
Ragnarok043 Zilvia Member Join Date: Jul 2005 Location: SF Posts: 285 Trader Rating: (1) Feedback Score: 1 reviews	i think the Denso plugs have a smaller center electrode which means less voltage required to spark.

05-25-2006, 11:44 PM	#6
carkid0007 Zilvia Junkie Join Date: Aug 2002 Location: Ohio Age: 40 Posts: 497 Trader Rating: (1) Feedback Score: 1 reviews	So which NGk's do you reccommend ? I have the denso iridiums in now but havnt started the motor yet, just got it swapped, and if possible I won't use them if they are bad as you guys say.

05-26-2006, 10:42 AM	#8
buku_points Zilvia Addict Join Date: Mar 2006 Location: Cali Posts: 989 Trader Rating: (16) Rides Gallery: buku_points Feedback Score: 16 reviews	i noticed that one coil kept popping off!!!!! i took those denso out right away!!!!! i went to use the ngk iridiums, but will it really make a diffenece? im running 12 lbs of boost, should i just buy the 92 sentra ser spark plugs or different ones?

05-26-2006, 12:03 PM	#10
spdfreek0o Zilvia Member Join Date: Mar 2005 Location: Oklahoma Posts: 280 Trader Rating: (0) Feedback Score: 0 reviews	I've been running denso iridiums for awhile and had no problems. I even pulled them out last week and checked them, nothing was loose and they were all still gapped pretty close to the original specs.

05-26-2006, 05:45 PM	#14
mothon Zilvia Addict Join Date: Dec 2003 Location: oklahoma Age: 39 Posts: 837 Trader Rating: (2) Feedback Score: 2 reviews	Always check the gap on any plug before you install them. Gap can change from shipping and handling.

05-26-2006, 06:55 PM	#15
buku_points Zilvia Addict Join Date: Mar 2006 Location: Cali Posts: 989 Trader Rating: (16) Rides Gallery: buku_points Feedback Score: 16 reviews	i bought the ngk iridium's their were originally gaped to .45 so i regaped them to .30

05-26-2006, 07:45 PM	#16
mjjstang Post Whore! Join Date: Apr 2003 Location: Michigan Posts: 2,654 Trader Rating: (5) Feedback Score: 5 reviews	the link I showed you was for the exact ones that I use, like the guy above me, he bought the ones that part number ends in 11 which is the 45, he gapped his electrode way too much and now is running the risk of it failing IE breaking loose in the chamber and causing catastrophic engine failure, so if you want good Iridiums, (although many people swear by copper) I however noticed a HUGE in terms of "its just a spark plug what kind of difference can it make" difference, night and day engine performance difference. I got the .30 gapped ones and no need to regap them, heat range 7 for srturbo. __________________ I was going to, but I can not think of a sig less than 75 characters.

05-27-2006, 06:43 PM	#17
buku_points Zilvia Addict Join Date: Mar 2006 Location: Cali Posts: 989 Trader Rating: (16) Rides Gallery: buku_points Feedback Score: 16 reviews	yea i noticed a real big difference in power altough i did re-gap them ill end up gettig new ones soon, that part number on the website you posted, can you take that number to kregan and theyll find it?

05-27-2006, 10:27 PM	#18
mjjstang Post Whore! Join Date: Apr 2003 Location: Michigan Posts: 2,654 Trader Rating: (5) Feedback Score: 5 reviews	no kregan around here, so i donno, maybe, I know pepboys, autozone, murrays and all the other places I tried, looked at me like I was an iditot and didnt belong in their store, then proceeded to tell me their bosh +33 was so much better with 33 differnt electrode straps. so i said fuckit and got from sparkplug.com. __________________ I was going to, but I can not think of a sig less than 75 characters.

05-28-2006, 11:44 AM	#19
buku_points Zilvia Addict Join Date: Mar 2006 Location: Cali Posts: 989 Trader Rating: (16) Rides Gallery: buku_points Feedback Score: 16 reviews	ahh oh well thanks for the info though!

06-01-2006, 05:17 AM	#20
Highboost180SX Leaky Injector Join Date: Mar 2006 Location: Bahamas Posts: 91 Trader Rating: (0) Feedback Score: 0 reviews	what are the correct denso and NGK part numbers for the "one step colder" heat range? __________________

06-01-2006, 06:16 AM	#22
mjjstang Post Whore! Join Date: Apr 2003 Location: Michigan Posts: 2,654 Trader Rating: (5) Feedback Score: 5 reviews	do you use the bkr6e with a turbo? __________________ I was going to, but I can not think of a sig less than 75 characters.