» Site Navigation | | » Recent Threads | 1999 M3 Swap 09-07-2023 10:10 PM 06-01-2024 03:04 PM 7 Replies, 409,511 Views | | My 318ti build 05-21-2024 04:48 PM 05-28-2024 06:42 PM 1 Replies, 3,272 Views | | OMG!OMG! 05-28-2024 08:53 AM 05-28-2024 08:53 AM 0 Replies, 1,254 Views | | | | | 07-27-2014, 09:44 PM | #1 | Member Join Date: Oct 2013 Location: usa Posts: 39 | Recommended spark plugs and gap What is the recommended spark plug and spark plug gap for a turbo-charged M44 engine? | | | 07-28-2014, 05:18 AM | #2 | Senior Member Join Date: Mar 2005 Location: Portland Or Posts: 2,666 | No such thing.. That's something you figure out when your tuning your engine. The plug rating will change based on boost, fuel, compression, etc.. For instance a standard plug works for street on many, but if your at teh track you running a cold race plug and changing them more often. The multi electrode plugs usually dont need the gap adjusted. Cheers. __________________ Dave - PDX 1995 318ti - Active Black and Tan. 2005 330xi - Mtech 1 - 6spd - Orient Blue/Black | | | 07-28-2014, 07:05 AM | #3 | Senior Member Join Date: May 2014 Location: USA Posts: 444 | off topic, but more info on your turbo m44?? | | | 07-29-2014, 06:21 AM | #4 | Member Join Date: Oct 2013 Location: usa Posts: 39 | I figured there would be an ideal gap range for an M42/M44 engine under 7-14 lbs of boost. I know that running a colder plug definitely helps. I'll probably experiment with different plugs and gap ranges to see how the car responds. E36 TI-M, if you read through the turbo install JohnBoy did for Yoda, it's that same exact setup. The car was tuned for 14-15 PSI by Midnight Tuning, but I currently have it set for 7-8 lbs. | | | 07-29-2014, 07:00 AM | #5 | Senior Member Join Date: Dec 2007 Location: Gulfport, Florida Posts: 3,208 | Depending on boost PSI Autolite #3923 or #3922 for turbo I-4. Fancy expensive plugs use hard metals so they last longer between spark plug changes. I believe these metals don't conduct electricity as good as a soft metal plug that uses copper. I change my plugs every 25,000 miles. Autolite #3924 for stock motor no boost Autolite #3923 for boost PSI up to 12 PSI Autolite #3922 for boost PSI up to 29 PSI | | | 07-30-2014, 05:15 AM | #6 | Senior Member Join Date: Mar 2005 Location: Portland Or Posts: 2,666 | Funny Autolite is the only plug that holds up in a 2 stroke go cart.. Cheers __________________ Dave - PDX 1995 318ti - Active Black and Tan. 2005 330xi - Mtech 1 - 6spd - Orient Blue/Black | | | | Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | | Posting Rules | You may not post new threads You may not post replies You may not post attachments You may not edit your posts HTML code is Off | | | |
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