how would a car run with these spark plugs?

[zaquanh]

i have a sr20det and needed spark plugs , went to auto zone and the guy gave me the wrong plugs but i didnt realize it till next day

they are BKR5E-11 spark plugs from what i gather there for a mazda ,

about 20 -30 min of drive time before i pulled them and put the right ones in but , can u tell me how it would drive i juss want to be sure i got the problem fixed thanks

http://www.ngk.com/more_info.asp?int...=1264&pid=3484

[louisdaboois]

its a couple ranges hotter than what is normally used in SR's. drivability shouldnt be affected or anything.

[zaquanh]

i gaped them down to 32 if it matter?

could spark plugs get too hot , it looked like they where heating up to the point the color started changing around the first thread of the plug by the tip

it was dark but almost like those titanium burnt tips

[Bomber 570]

Originally Posted by louisdaboois

its a couple ranges hotter than what is normally used in SR's. drivability shouldnt be affected or anything.

yah, you know, except for the knocking and detonation, he should be fine

gap them out or run colder plugs, running too hot on a boosted engine is just asking for knocking/pinging and pre-detonation, which = loss of power and worse fuel economy.

[S14DB]

http://www.ngksparkplugs.com/techinf...overviewp2.asp

[zaquanh]

thanks , i mean it ran like that , and then i juss pulled them out so hopfully its all good , ill drive it later today

[fliprayzin240sx]

You need atleast 6 heat range for stock and gapped down to atleast .030. You can use Z32 TT for a cross reference if youre looking for a stock set...

[zaquanh]

ive ben running these should i get 6 instead ?

BKR7E-11 v power

[jrocslider]

BKR6EIX-11 (3764) or BKR7EIX-11 (6988) for the NGK iridium plugs

[louisdaboois]

Originally Posted by Bomber 570

yah, you know, except for the knocking and detonation, he should be fine

i mean, in all honesty it's just 1 stage warmer than whats recommended for sr's, i doubt it'll make a huge difference with it detonating. if it were like 2+ stages warmer then i can see it having spark knock. anyway, thats just me. (sorry for misinformation, i suppose)

but to the op, run at least 6's for optimal efficiency.

[let5l1de]

Originally Posted by louisdaboois

i mean, in all honesty it's just 1 stage warmer than whats recommended for sr's, i doubt it'll make a huge difference with it detonating. if it were like 2+ stages warmer then i can see it having spark knock. anyway, thats just me. (sorry for misinformation, i suppose)

but to the op, run at least 6's for optimal efficiency.

1 stage is really not that big of a deal and a nearly stock engine. If you have many mods and have been tuned, it usually means your margin for error (spark plug temp range as an example) will be reduced, increasing the chance for premature detonation, ign. timing change and overheating in extreme load conditions....

at least you changed them. I believe poor spark plug maintenance has the potential to be much worse than 1 heat range pt.

[zaquanh]

oh it ran like shit , like a permenant boost leak thru all rpms, juss sputterin along and lots of back fire , still ran the same but SLOW and bogged it didnt sound good ,

[OBEEWON]

You probably have gobs of carbon buildup. Sea foam the slop out of it.

Drop your gap a bit too. Go to .28 if its stock, high boost .23

[zaquanh]

isnt that kinda low ive ben runin .32 and some people that i know run .30

ill get sea foam on the way home ,BTW for any one else that gets on here , seafoam works very well