Popular performance spark plug choice?
#1
Popular performance spark plug choice?
I got better gas mileage with the platinum plugs (ac delco 41-905 ) than the stock copper cores (ac delco R45TS).
Are the ngk iridium plugs any good ?
NGK Iridium IX 7401
http://shop.advanceautoparts.com/web...ium+spark+plug
Are the ngk iridium plugs any good ?
NGK Iridium IX 7401
http://shop.advanceautoparts.com/web...ium+spark+plug
Last edited by KITT1983; 03-07-2013 at 07:17 PM.
#2
Supreme Member
iTrader: (5)
Join Date: Jan 2009
Location: league city
Posts: 2,928
Likes: 0
Received 3 Likes
on
3 Posts
Car: SOLD!!!!!
Re: Popular spark plug choice?
I went from the ngk iridium plugs that I was running for a couple a years back to ac delco number 2 plugs. the rapid fire plugs from the stock ones. runs better. I originally went to the ngk plugs due to the hooker shorty headers.
#5
Member
iTrader: (1)
Join Date: Jul 2011
Location: Central New York
Posts: 106
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1988 camaro base coupe
Engine: 305 LO3
Transmission: gm 700-r4
Re: Popular spark plug choice?
I just put on ac delco r45ts, use thoughs, theres a reason thats what the factory preferred for our cars, have fun changing them what a pita
#7
Member
Join Date: Oct 2012
Location: Wisconsin & FOB fenty AFG
Posts: 123
Likes: 0
Received 4 Likes
on
3 Posts
Car: 1991 Camaro RS
Engine: 305
Transmission: T5
Axle/Gears: 7.6" 3.73 yukon locker
Re: Popular spark plug choice?
Does running a cooler temp degrade the plat plugs? I have never heard of this before. Not saying its not true. Just would like more info before I make the same mistake.
Trending Topics
#9
Supreme Member
iTrader: (5)
Join Date: Jan 2009
Location: league city
Posts: 2,928
Likes: 0
Received 3 Likes
on
3 Posts
Car: SOLD!!!!!
Re: Popular spark plug choice?
best thing for you to do is read the gazillion threads on plugs. everybody has the ones they like. the ones they like are the best to them. while reading the threads read how many people have switched to a different plug and ended up going back. i believe it has been proven a billion times that most cars run best with factory plugs installed.
#10
Re: Popular spark plug choice?
The 160 degree thermstat was making the cfi unable to run in closed loop. This was confirmed by a snap on scantool. Basically it was runing rich, which would foul any plug not just platinum. I had the 41-905 platinum plugs in my cfi for 4 years (20,000 miles most city of boston driving).
#11
Re: Popular spark plug choice?
best thing for you to do is read the gazillion threads on plugs. everybody has the ones they like. the ones they like are the best to them. while reading the threads read how many people have switched to a different plug and ended up going back. i believe it has been proven a billion times that most cars run best with factory plugs installed.
#15
Re: Popular performance spark plug choice?
I'd say it all depends on the application.
Expensive plugs on a non-feedback (no O2 sensor) application is crazy.
Expensive plugs on early/primitive feedback applications (feedback carb or TBI) may be crazy, although it's less crazy than using them on a non-feedback system.
Expensive plugs on port fuel-injection systems can be VERY worthwhile. I pulled the original plugs (AC Iridiums) out of Spousal Unit's 2003 Trailblazer six-popper at 90,000 miles. They were so perfect that even though I'd already purchased replacement plugs, I verified the gaps, applied anti-seize to the originals and screwed them right back in. Currently have 140K miles on it, and it runs beautifully. The replacement spark plugs are still in the box, on the shelf in the garage.
Would I go 90K on a TBI vehicle? Not without checking them at 45K, and I don't really expect they'd be re-installed.
Expensive plugs on a non-feedback (no O2 sensor) application is crazy.
Expensive plugs on early/primitive feedback applications (feedback carb or TBI) may be crazy, although it's less crazy than using them on a non-feedback system.
Expensive plugs on port fuel-injection systems can be VERY worthwhile. I pulled the original plugs (AC Iridiums) out of Spousal Unit's 2003 Trailblazer six-popper at 90,000 miles. They were so perfect that even though I'd already purchased replacement plugs, I verified the gaps, applied anti-seize to the originals and screwed them right back in. Currently have 140K miles on it, and it runs beautifully. The replacement spark plugs are still in the box, on the shelf in the garage.
Would I go 90K on a TBI vehicle? Not without checking them at 45K, and I don't really expect they'd be re-installed.
Thread
Thread Starter
Forum
Replies
Last Post
evilstuie
Exhaust
24
02-28-2016 03:33 PM