Thread: Known cold plugs (NGK BKR7) with removable contact tip?

Advance Auto is also against me. =/

Napa gets my plugs for me. They are the normal BKR7E plugs and have the removable tip. You could go for the heat range 9 if they are available, but most only come in the 12 or 10mm thread for motorcycles. In which case you can get a cool set of thread inserts and either thread them into your head, or super-threadlock them onto the plugs so they fit in your head.

Then the CBR coils will work. Just keep in mind they have built in igniters, so you will need an MSD DIS or equiv to work them.

im running BKR5E's on my det, is it safer to runing something else?

ngkbkr 5 is not d ideal thing for the det engine for the det engine ngkbkr6 is d hot plug for that motor & ngkbkr7 is d cold plug for that motor........well thats what d manual say bout the det engine..... gap them to 0.028...

Apparently I should stop sending Dan Martin to get my plugs. So everyone around has these available it seems. I'll have to hunt down a set later. For now I've modified some BKR7E's with no removable tip to work.


12 or 10mm thread pitch, or 12 or 10mm shaft diameter? I'm talking about a threaded shaft that's maybe 2mm in diameter.

I don't think you have the right idea. The threaded portion I'm talking about is on the other side of the plug. Not the side that threads in to the block.

I've been running CBR coils for over a year now N/A. I'm aware of how to get them working. =]

No no no. You misunderstood. The small end (for the coil pack) is removable on most NGK plugs. ALL plugs over 7 should have the removable tip.

On the end that goes into the block: sometimes it is hard to find one that is the correct size for our motor (14mm). In this case you can take the 12mm plug and put a thread insert on it so it will fit in the 14mm hole in the head.

That way you can run heat range 9

I'm almost positive NGK has stopped making plugs with removable tips. Can't find any anywhere. Sifted through boxes and boxes of plugs behind the counter at a store and found nada.

Bosch consistently offers removable tips still, so I went hunting for a part number that will work for me. I found the number comparable in heat range to the NGK-7 which is "6". Factory heat range for Bosch plug for our N/A engines is 8. Two steps colder (lower numbers are colder for American companies and higher for Japanese companies usually) from 8 is 6. By the way, here's the site I used to mostly decode the various brand's part numbers. It also has tons of fun info so it's a good read (Mitsubishi 3000GT centric but tons of good general info).

FR8DCX+ is factory. FR6DCX+ is what I need (in copper).

I also used www.sparkplugs.com to find other cars that run this colder plug from the factory so I can just show up at a local place and say "I have a 1998 Toyota Supra Twin Turbo I need plugs for" and avoid dealing with the madness.

List of factory cars with plug sizes and heat ranges comparable to what I'm looking for (cool cars to pretend you own marked in bold):

ACURA INTEGRA GSR (2001) 1.8LL4 B18C1
ACURA INTEGRA GSR (2000) 1.8LL4 B18C1
ACURA INTEGRA GSR (1999) 1.8LL4 B18C1
ACURA INTEGRA GSR (1998) 1.8LL4 B18C1
ACURA INTEGRA GSR (1997) 1.8LL4 B18C1
ACURA INTEGRA GSR (1996) 1.8LL4 B18C1
ACURA INTEGRA GSR (1995) 1.8LL4 B18C1
ACURA INTEGRA GSR (1994) 1.8LL4 B18C1
ACURA INTEGRA TYPE-R (2001) 1.8LL4 B18C5
ACURA INTEGRA TYPE-R (2000) 1.8LL4 B18C5
ACURA INTEGRA TYPE-R (1998) 1.8LL4 B18C5
ACURA INTEGRA TYPE-R (1997) 1.8LL4 B18C5
HONDA CIVIC MUGEN SI (2008) 2.0LL4 K20Z3
HONDA CIVIC SI (2008) 2.0LL4 K20Z3
HONDA CIVIC SI (2007) 2.0LL4 K20Z3
HONDA CIVIC SI (2006) 2.0LL4 K20Z3
HONDA S2000 (2008) 2.2LL4 F22C1
HONDA S2000 (2007) 2.2LL4 F22C1
HONDA S2000 (2006) 2.2LL4 F22C1
HONDA S2000 (2005) 2.2LL4 F22C1
HONDA S2000 (2004) 2.2LL4 F22C1
HONDA S2000 CR (2008) 2.2LL4 F22C1
INFINITI M30 (1991) 3.0LV6 VG30E
INFINITI M30 (1990) 3.0LV6 VG30E
NISSAN 200SX (1988) 3.0LV6 VG30E
NISSAN 200SX (1987) 3.0LV6 VG30E
NISSAN 300ZX (1996) 3.0LV6 VG30DE
NISSAN 300ZX (1996) 3.0LV6 VG30DETT
NISSAN 300ZX (1995) 3.0LV6 VG30DE
NISSAN 300ZX (1995) 3.0LV6 VG30DETT
NISSAN 300ZX (1994) 3.0LV6 VG30DE
NISSAN 300ZX (1994) 3.0LV6 VG30DETT
NISSAN 300ZX (1993) 3.0LV6 VG30DE
NISSAN 300ZX (1993) 3.0LV6 VG30DETT
NISSAN 300ZX (1992) 3.0LV6 VG30DE
NISSAN 300ZX (1992) 3.0LV6 VG30DETT
NISSAN 300ZX (1991) 3.0LV6 VG30DE
NISSAN 300ZX (1991) 3.0LV6 VG30DETT
NISSAN 300ZX (1990) 3.0LV6 VG30DE
NISSAN 300ZX (1990) 3.0LV6 VG30DETT
NISSAN 300ZX (1989) 3.0LV6 VG30
NISSAN 300ZX (1988) 3.0LV6 VG30
NISSAN 300ZX (1987) 3.0LV6 VG30
NISSAN 300ZX (1986) 3.0LV6 VG30
NISSAN 300ZX (1986) 3.0LV6 VG30T
NISSAN 300ZX (1985) 3.0LV6 VG30
NISSAN 300ZX (1984) 3.0LV6 VG30
NISSAN 300ZX 2+2 (1996) 3.0LV6 VG30DE
NISSAN 300ZX 2+2 (1995) 3.0LV6 VG30DE
NISSAN 300ZX 2+2 (1994) 3.0LV6 VG30DE
NISSAN 300ZX 2+2 (1993) 3.0LV6 VG30DE
NISSAN 300ZX 2+2 (1992) 3.0LV6 VG30DE
NISSAN 300ZX 2+2 (1991) 3.0LV6 VG30DE
NISSAN 300ZX 2+2 (1990) 3.0LV6 VG30DE
NISSAN 300ZX 2+2 (1989) 3.0LV6 VG30
NISSAN 300ZX 2+2 (1988) 3.0LV6 VG30
NISSAN 300ZX 2+2 (1987) 3.0LV6 VG30
NISSAN 300ZX 2+2 (1986) 3.0LV6 VG30
NISSAN 300ZX 2+2 (1986) 3.0LV6 VG30T
NISSAN 300ZX 2+2 (1985) 3.0LV6 VG30
NISSAN 300ZX 2+2 (1984) 3.0LV6 VG30
NISSAN MAXIMA (1991) 3.0LV6 VG30E
NISSAN MAXIMA (1990) 3.0LV6 VG30E
NISSAN MAXIMA (1989) 3.0LV6 VG30E
NISSAN MAXIMA (1988) 3.0LV6 VG30E
NISSAN MAXIMA (1987) 3.0LV6 VG30E
NISSAN MAXIMA (1986) 3.0LV6 VG30E
NISSAN MAXIMA (1985) 3.0LV6 VG30E
NISSAN MAXIMA GXE (1994) 3.0LV6 VG30E
NISSAN MAXIMA GXE (1993) 3.0LV6 VG30E
NISSAN MAXIMA GXE (1992) 3.0LV6 VG30E
SAAB 3-Sep (2001) 2.0LL4 B205L
SAAB 3-Sep (2000) 2.0LL4 B205L
SAAB 3-Sep (1999) 2.0LL4 B204L
SAAB 3-Sep SE (2003) 2.0LL4 B205R
SAAB 3-Sep SE (2002) 2.0LL4 B205R
SAAB 3-Sep SE (2001) 2.0LL4 B205R
SAAB 3-Sep SE (2000) 2.0LL4 B205R
SAAB 3-Sep VIGGEN (2002) 2.3LL4 B235R
SAAB 3-Sep VIGGEN (2001) 2.3LL4 B235R
SAAB 3-Sep VIGGEN (2000) 2.3LL4 B235R
SAAB 3-Sep VIGGEN (1999) 2.3LL4 B235R
SAAB 5-Sep ARC (2005) 2.3LL4 B235L
SAAB 5-Sep ARC (2004) 2.3LL4 B235L
SAAB 900 S TURBO (1998) 2.0LL4 B204L
SAAB 900 SE TURBO (1998) 2.0LL4 B204L
SAAB 900 SE TURBO (1997) 2.0LL4 B204L
SAAB 9000 (1992) 2.3LL4 B234L
SAAB 9000 (1991) 2.3LL4 B234L
SAAB 9000 AERO (1996) 2.3LL4 B234L
SAAB 9000 AERO (1996) 2.3LL4 B234R
SAAB 9000 AERO (1995) 2.3LL4 B234L
SAAB 9000 AERO (1995) 2.3LL4 B234R
SAAB 9000 AERO (1993) 2.3LL4 B234L
SAAB 9000 CD (1994) 2.3LL4 B234L
SAAB 9000 CD (1993) 2.3LL4 B234L
SAAB 9000 CD (1992) 2.3LL4 B234L
SAAB 9000 CD (1991) 2.3LL4 B234L
SAAB 9000 CDE (1994) 2.3LL4 B234L
SAAB 9000 CDE (1993) 2.3LL4 B234L
SAAB 9000 CS (1994) 2.3LL4 B234L
SAAB 9000 CS (1993) 2.3LL4 B234L
SAAB 9000 CSE (1994) 2.3LL4 B234L
SAAB 9000 CSE (1993) 2.3LL4 B234L
SAAB 9000 CSE TURBO (1998) 2.3LL4 B234L
SAAB 9000 CSE TURBO (1996) 2.3LL4 B234L
SAAB 9000 CSE TURBO (1995) 2.3LL4 B234L
SAAB 9000 GRIFFIN EDTION (1992) 2.3LL4 B234L
SAAB 9000 SPG (1991) 2.3LL4
TOYOTA SUPRA (1995) 3.0LL6 2JZGTE
TOYOTA SUPRA (1994) 3.0LL6 2JZGTE
TOYOTA SUPRA (1993) 3.0LL6 2JZGTE
TOYOTA SUPRA TWIN TURBO (1998) 3.0LL6 2JZGTE
TOYOTA SUPRA TWIN TURBO (1997) 3.0LL6 2JZGTE
TOYOTA SUPRA TWIN TURBO (1996) 3.0LL6 2JZGTE

Went to Pep Boys and asked for plugs for a 2004 Honda S2000. They were one heat range too hot. Damn.
Same thing for the Turbo Supra.

Nothing behind the counter was in heat range "6" for Bosch.

Time to order from www.sparkplugs.com.

Facebook album permalink (in case the images don't show up in the future).

This was my old, temporary solution.



And for those who kept telling me every NGK plug had a removable tip, this is what happens when you try to unscrew one that doesn't.

lol ben you crack me up. So you tried to remove it anyway huh? lmao.

Always a great learning experience!

I guess you are going to have to use motorcycle plugs.