Author Topic: spark plugs??? what do you run? (Read 8258 times)

dwf08 · « **on:** July 31, 2008, 04:49:12 PM »

what kind of spark plugs do you guys run? and wat is the best? in a 91 318is

tjts1 · « **Reply #1 on:** July 31, 2008, 05:08:09 PM »

ngk BKR6EK

EN318isPDX · « **Reply #2 on:** July 31, 2008, 05:28:58 PM »

I believe i read somewhere that BMW developed basically the Bosch double platinum for the M42.

Quote

A new spark plug developed by BMW is used to complete the new M1.7 engine management system. The new spark plug features a 14mm thread, a three-arm "platform" electrode and requires no adjustment. The platform electrode provides a large conductive area which maintains a constant air gap and a uniform flame front during the spark plug's service life.

Source is from http://www.m42club.com/forums/showthread.php?t=5641

nomad · « **Reply #3 on:** July 31, 2008, 06:30:41 PM »

i have autolite regular platinum tips in mine. It was cheapo ($3 total?) with a coupon and i wanted to replace the super worn out stockers. Runs fine so far and I'll upgrade later

AcSchnitzer318is · « **Reply #4 on:** July 31, 2008, 11:32:46 PM »

Quote from: tjts1;54114

ngk BKR6EK

x2:cool:

RED IS 91 · « **Reply #5 on:** August 01, 2008, 06:17:44 AM »

Quote from: AcSchnitzer318is;54132

x2:cool:

ngk BKR6EK
+3

halcron · « **Reply #6 on:** August 01, 2008, 07:54:13 AM »

I have tried NGK Idridium, denso iridium and BRISK Premium LGS. The Brisk plugs are the best but their lifespan is rather short.

IMHO, NGK or denso ones will be good enough. to get slightly better low end torque, you can side gap the plug a little.

Wizard · « **Reply #7 on:** August 01, 2008, 11:34:26 AM »

Denso Iridium IK20's....Will never use anything else. Have tried the Bosch Plat's and they don't compare to Iridiums...Thousands of miles and never a problem.

ponchiz318 · « **Reply #8 on:** August 02, 2008, 10:27:05 AM »

I run Bosch Platinum+4. The 4 tip platinums. The car runs a lot better. Partly because when I bought the car, I changed the plugs. It had 3 regular Autolites and 1 Motorcraft Platinum.......

4o4ko · « **Reply #9 on:** September 11, 2008, 07:41:03 AM »

DENSO IRIDIUM IK22 - will run more then fine for more then 100k km

After istalling them engine became much more responsive and quiet

quinn11m20 · « **Reply #10 on:** September 11, 2008, 05:33:25 PM »

I use Pulstar plugs. They run about $25 for one and let me tell you they are a lifetime investment. Best plug I have ever owned. Check out their website at http://www.pulstarplug.com. You will be impressed. I noticed a difference after the first gas tank. My car just felt snappier. Seriously check out their website.

halcron · « **Reply #11 on:** September 12, 2008, 04:23:52 AM »

Quote from: quinn11m20;56530

I use Pulstar plugs. They run about $25 for one and let me tell you they are a lifetime investment. Best plug I have ever owned. Check out their website at http://www.pulstarplug.com. You will be impressed. I noticed a difference after the first gas tank. My car just felt snappier. Seriously check out their website.

Oh pulstar. After I checked out their website, I have to say I am rather skeptical about it though. They made a terrible claim on ignition velocity. The speed the flame spreads does not improve power at all! In order to obtain peak combustion pressure, ECUs basically advance the ignition timing. If the flame spreads much faster than normal, the ECU will have to retard the timing to prevent knocking.

halcron · « **Reply #12 on:** September 12, 2008, 04:24:38 AM »

Btw, I just bought a set of Bosch Platinum Iridium Fusion plugs and I have to say they are even better than the NGKs.

Asserti · « **Reply #13 on:** September 15, 2008, 08:24:51 AM »

Quote from: RED IS 91;54140

ngk BKR6EK
+3

+4

Cobra Jet · « **Reply #14 on:** September 17, 2008, 09:18:52 AM »

I also have the NGK's.

I'm curious though, do the original BOSCH plugs still exist for pruchase (the ones mentioned in the quote):

Quote

A new spark plug developed by BMW is used to complete the new M1.7 engine management system. The new spark plug features a 14mm thread, a three-arm "platform" electrode and requires no adjustment. The platform electrode provides a large conductive area which maintains a constant air gap and a uniform flame front during the spark plug's service life.

If so, what is the part #? Where these plugs put into the M42 when it was built new? If those plugs did come in the M42, does anyone have any experience with them?