10mm plug questions
#2
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RE: 10mm plug questions
If your having trouble with the steep price of CM6 plugs ...
These are genuine NGK CM6 plugs from boats.net
http://www.boats.net/parts/detail/ho...052-56471.html
I got a box of 10 for around $25- shipped
These are genuine NGK CM6 plugs from boats.net
http://www.boats.net/parts/detail/ho...052-56471.html
I got a box of 10 for around $25- shipped
#5
RE: 10mm plug questions
These are equivalent to NGK CM6 spark plug:
NGK STK: 5812
AC Delco: M8 (Non-compact size, but similar thread and thermal rating)
Champion P/N: UY6
Champion STK: 842
Denso P/N: U20M-U
Denso STK: 6003
GM OEM NR: 1559459
Motorcraft P/N: BT8
Napa: X581
Prestolite: 09-10-06
http://www.sparkplug-crossreference.com/index.php
NGK numbering system:
http://www.ngk.com/sparkplug411_manu...nufacturerID=1
The C indicates the M10 thread and 5/8" hex size.
The M indicates a compact size.
The #6 indicates a medium heat rating (2 is hottest and 12 is coolest).
NGK STK: 5812
AC Delco: M8 (Non-compact size, but similar thread and thermal rating)
Champion P/N: UY6
Champion STK: 842
Denso P/N: U20M-U
Denso STK: 6003
GM OEM NR: 1559459
Motorcraft P/N: BT8
Napa: X581
Prestolite: 09-10-06
http://www.sparkplug-crossreference.com/index.php
NGK numbering system:
http://www.ngk.com/sparkplug411_manu...nufacturerID=1
The C indicates the M10 thread and 5/8" hex size.
The M indicates a compact size.
The #6 indicates a medium heat rating (2 is hottest and 12 is coolest).
#8
My Feedback: (2)
RE: 10mm plug questions
Some of the plugs you listed are not the same. They have the same thread but are two to three times the size of a CM-6. The The Denso U20M is the exact same fit as the CM-6. For example below is a picture of a Delco M8, it is about three times the size of a CM-6.
#9
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RE: 10mm plug questions
There are only 2 other plugs made that interchange with the NGK CM-6 and still fit the same sparkplug cap, Champion Y-82 and Denso U20MU, the best of the 3 by far is the NGK.
Have no idea what an M4F is, it doesn't come up in any of my searches.
Have no idea what an M4F is, it doesn't come up in any of my searches.
#10
RE: 10mm plug questions
The M4F comes with the RCGF 15cc engine (China).
http://www.himodel.com/engines/Glow_...ngine_M4F.html
I have seen reviews showing some owner's complaints about the bottom isolator breaking and damaging engines.
http://www.himodel.com/engines/Glow_...ngine_M4F.html
I have seen reviews showing some owner's complaints about the bottom isolator breaking and damaging engines.
#13
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RE: 10mm plug questions
M4F might be an apt identifyer of a plug developed over several minutes of research. The "M" could represent "minutes", the "4" could relate to the number of minutes it could be expected to last, and the "F" could represent the first letter of the exclamation when the plug fails.
#15
RE: 10mm plug questions
ORIGINAL: Super08
Some of the plugs you listed are not the same. They have the same thread but are two to three times the size of a CM-6. The The Denso U20M is the exact same fit as the CM-6. For example below is a picture of a Delco M8, it is about three times the size of a CM-6.
Some of the plugs you listed are not the same. They have the same thread but are two to three times the size of a CM-6. The The Denso U20M is the exact same fit as the CM-6. For example below is a picture of a Delco M8, it is about three times the size of a CM-6.
Thanks, Super08.
#16
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RE: 10mm plug questions
Lnewqban - "Do not go around saying the world owes you a living. The world owes you nothing. It was here first." Mark Twain
Read more: http://www.rcuniverse.com/forum/m_98...#ixzz0rgeVzs00
I like you already. Much truth in your signature line[sm=thumbs_up.gif]
Read more: http://www.rcuniverse.com/forum/m_98...#ixzz0rgeVzs00
I like you already. Much truth in your signature line[sm=thumbs_up.gif]
#17
RE: 10mm plug questions
Thanks TOM, but it's not mine.
The good old Mark Twain wrote it long ago.
From him, I also like these ones:
"Always do right. This will gratify some people and astonish the rest."
"A lie can travel halfway around the world while the truth is putting on its shoes."
He died 100 years ago, but the world and we people are about the same still today.
The good old Mark Twain wrote it long ago.
From him, I also like these ones:
"Always do right. This will gratify some people and astonish the rest."
"A lie can travel halfway around the world while the truth is putting on its shoes."
He died 100 years ago, but the world and we people are about the same still today.
#19
Join Date: Apr 2010
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RE: 10mm plug questions
Your local Honda generator dealer will have the genuine NGK CM-6. The Honda part number is 98052-56471. I bought a few a couple weeks ago at
a Honda generator dealer for $2.59 each.
I can only speak for the NGK CM-6 and the Denso U20M-U, both are a good long lasting plug, as far as performance and life span, I can tell no difference between them.
The Chinese M4F spark plug is inferior quality, I have seen the plating on the metal part of the plug that is down in the cylinder come off and damage the piston, ring, and cylinder wall.
a Honda generator dealer for $2.59 each.
I can only speak for the NGK CM-6 and the Denso U20M-U, both are a good long lasting plug, as far as performance and life span, I can tell no difference between them.
The Chinese M4F spark plug is inferior quality, I have seen the plating on the metal part of the plug that is down in the cylinder come off and damage the piston, ring, and cylinder wall.
#21
Thread Starter
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RE: 10mm plug questions
ORIGINAL: Tired Old Man
M4F might be an apt identifyer of a plug developed over several minutes of research. The ''M'' could represent ''minutes'', the ''4'' could relate to the number of minutes it could be expected to last, and the ''F'' could represent the first letter of the exclamation when the plug fails.
M4F might be an apt identifyer of a plug developed over several minutes of research. The ''M'' could represent ''minutes'', the ''4'' could relate to the number of minutes it could be expected to last, and the ''F'' could represent the first letter of the exclamation when the plug fails.
Hence the problem.
Ordered some NGKs from boats.net.
Thanks to all for the input and info.