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Cloud9Blue Cloud9Blue is offline
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Default 05-22-2016, 09:08 PM

Probably a dumb question, if you have no misfires and very little timing correction, how do you know if you need a colder spark plug or not.


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3000GT MR 3000GT MR is offline
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Default 05-23-2016, 03:25 AM

Quote:
Originally Posted by Cloud9Blue
Probably a dumb question, if you have no misfires and very little timing correction, how do you know if you need a colder spark plug or not.
Best way to tell is by the sparkplug its self. The biggest give away is the porcelain at the top will be pretty brown above the hex. From the other end typically the ground will be white and sometimes have a little rainbow effect.


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bartbes bartbes is offline
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Default 05-24-2016, 03:14 AM

Quote:
Originally Posted by 3000GT MR
Best way to tell is by the sparkplug its self. The biggest give away is the porcelain at the top will be pretty brown above the hex. From the other end typically the ground will be white and sometimes have a little rainbow effect.
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Like this?
1k on them
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omarmarji omarmarji is offline
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Default 05-24-2016, 08:19 AM

not a very good picture, and this spark plug isnt what n54's ideally use..single prong spark plugs as listed by 300gt is what we should put in our cars with the appropriate gap


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bartbes bartbes is offline
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Default 05-24-2016, 08:41 AM

Sorry about that, made the picture with my phone and didnt notice it was bad before I posted it..

These are what I got for oem replacement, but i'll be sure to get some ngk's

Thanks
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Default 05-25-2016, 05:50 AM

Heres a good reference for heat http://www.wallaceracing.com/plug-reading-lm.html


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jrmy23 jrmy23 is offline
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Default 05-26-2016, 05:08 PM

For these, "GTR" plugs what kind of sparkplug tool is used to install them?
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omarmarji omarmarji is offline
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Default 05-26-2016, 05:43 PM

I used standard BMW spark plug tool from bms ,,,,

Plugs installed , cold start is smooth now .. Will test in boost in a moment


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Default 05-26-2016, 06:14 PM

.018 gap no good... Back fires under hard acceleration .... Bring it to .025 then working my way down . As much gap I can get before blow out if what I need to do . I have a feeling .022 will be the sweet spot


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Default 05-26-2016, 06:45 PM

Quote:
Originally Posted by omarmarji
.018 gap no good... Back fires under hard acceleration .... Bring it to .025 then working my way down . As much gap I can get before blow out if what I need to do . I have a feeling .022 will be the sweet spot
I just purchased a sparkplug gapper that went down to .018, since mine only went to .020 lol let us know how .022 goes.
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Default 05-27-2016, 09:04 AM

What is the maximum gap anyone has run, without blow out? On a car running
around 600 hp. I pissed away my money on a set of plasma coils and am going to dyno the car before & after, then post results. currently running 0.22 but want to increase gap on the plasma as much as possible? Problem is I can not
spend all day on the dyno trying different gaps? I am thinking 0.26


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(#37)
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omarmarji omarmarji is offline
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Default 05-27-2016, 09:12 AM

I seen .025 which is nuts


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Default 05-27-2016, 09:33 PM

hey 3000gt

http://www.gtrlife.com/forums/topic/...n-spark-plugs/

heat range of 9


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3000GT MR 3000GT MR is offline
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Default 05-28-2016, 01:29 PM

Quote:
Originally Posted by omarmarji
@ $50/ea a plug buy them and let me know how it goes!. NGK also makes another race plug that is around $100 a plug that will work. Until we know we need them its not worth it IMO


Have a single turbo and/or tired of burning up O2 sensors? Ask me about the new ADV O2 sensor retro kits!

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omarmarji omarmarji is offline
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Default 05-28-2016, 01:34 PM

Yea I know I'm just showing you how crazy the variety of spark plugs that are out there lol


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(#41)
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gruvenon gruvenon is offline
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Default 07-10-2016, 11:36 AM

If I am running stock 335is and time comes to change spark plus is there any advantage or disadvantage to running NGK 95770 (ILZKBR7B8DG) formally 5992’s?
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(#42)
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matthewo matthewo is offline
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Default 07-10-2016, 11:49 AM

Just put in the autolite plugs mentioned in this post. I am FBO - e50 - I gapped them at .022. . They feel good to me and smoother starts. Great thing is they are $5.79 at my local parts store in stock and had a 2.50 mail in rebate so that's like less than $20 on a boosted BMW set of plugs that work good tuned, can't beat it
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(#43)
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phil1320 phil1320 is offline
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Default 08-31-2016, 10:50 AM

I just ordered the Autolites also, want to give them a shot. They are $5.50 a piece through amazon. I am putting on my DocRace 6266 this Friday!
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08_335i 08_335i is offline
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Default 08-31-2016, 01:04 PM

Quote:
Originally Posted by phil1320
I just ordered the Autolites also, want to give them a shot. They are $5.50 a piece through amazon. I am putting on my DocRace 6266 this Friday!
My personal experience with these plugs was garbage. They don't even send out the plugs with protection around the probs, just in the little box carriers! just by looking at the end of the plugs you can see the quality difference between them and NGK is night and day. Just my experience though.
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sono_n54 sono_n54 is offline
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Default 09-10-2016, 07:07 PM

I installed the autolites today. Idle and cruising is smooth but spark is breaking up under load at 14. gapped using a ring tool at .024. MHD stage 2+ should I go smaller?
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Default 09-11-2016, 05:08 AM

.024 is too big of a gap I noticed for these platforms , try .020


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mike082802 mike082802 is offline
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Default 09-11-2016, 08:49 AM

i bought the autolites from rock auto for 5$ a piece and then got $2.50 a piece rebate so ended up costing me $2.50 a plug, couldn't pass that up. haven't installed them yet, i have ngks with about 14k on them gapped at .22 running fbo tbi full e85 inlets outlets. im thinking i'll probably gap the same or .20, any suggestions?
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THE BEAST THE BEAST is offline
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Default 09-11-2016, 09:12 AM

Quote:
Originally Posted by omarmarji
.024 is too big of a gap I noticed for these platforms , try .020
.025 is working for me. Stock snails at 20 psi.
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ssimardo ssimardo is offline
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Default 09-13-2016, 11:38 AM

If I am running basically stock 335is and time comes to change spark, which it has, are there any advantage or disadvantage to running NGK 95770 (ILZKBR7B8DG) formally 5992’s?

Only a few modifications nothing big yet
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Junkyarddogg Junkyarddogg is offline
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Default 09-13-2016, 03:40 PM

Did anyone else experience the shakes and stutters after replacing their plugs? This is annoying me to no end. When I start the car, the car shakes and it mostly goes away after it is warmed up. Still a very slight shake here and there. It started after I replaced my oem plugs with the ngk's that I gapped. Went back in and checked to make sure all was tight and coils on all the way. I went ahead and bought some pre gapped oem Bosch plugs. Same thing, used a torque wrench. I tried one last time just hand tightening and it's still there. I've read lots of other people having the same issue after changing plugs. Just seeing if anyone experienced it here and found a solution.
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