Spark Plug - MVAgusta.net
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post #1 of 24 (permalink) Old 11-04-2019, 05:54 PM Thread Starter
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Spark Plug

Hi All,

Sorry if this issues has been answered already but couldnít find anything concrete.
Brutale 920 calls for CR9EB plugs, but I had some CR9EIA-9 from my ZX-10R days.
Are these plugs interchangeable?


Thanks in advance for any guidance.

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post #2 of 24 (permalink) Old 11-05-2019, 03:08 AM
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i don't know is this help but A means thread terminal, B means solid terminal...
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post #3 of 24 (permalink) Old 11-05-2019, 06:08 AM
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Basically the same plug, correct heat range. Japanese manufacturers call out goofball specs on plugs
Honda CR250F '02-'08 NGK plugs come in a red box and are $48 EACH
The NGK CR-9 EIX Iridium spark plug is the standard of the industry (the ND, is the same, just different number )
They should go ~80,000 mi at least
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post #4 of 24 (permalink) Old 11-05-2019, 07:18 AM
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Your iridium plugs are the same heat range and everything else, except the iridium electrode and the threaded coil connection. So Yes, they are interchangeable.

You will need to find some old spark plugs with screw on tips to use them with your MV coils. Visit your friendly small engine repair shop. They may have plenty.

We used to call them "seeds" because we took them off so many plugs (seems every plug back then had a screw on tip standard and many bikes didn't use it) and they invariably fell on the ground and disappeared.
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post #5 of 24 (permalink) Old 11-05-2019, 05:14 PM Thread Starter
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Quote:
Originally Posted by esq'z me View Post
Your iridium plugs are the same heat range and everything else, except the iridium electrode and the threaded coil connection. So Yes, they are interchangeable.

You will need to find some old spark plugs with screw on tips to use them with your MV coils. Visit your friendly small engine repair shop. They may have plenty.

We used to call them "seeds" because we took them off so many plugs (seems every plug back then had a screw on tip standard and many bikes didn't use it) and they invariably fell on the ground and disappeared.

Thanks for the tip.
Can i reuse the current ones?

2012 Brutale 920 (Weekend Toy)

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post #6 of 24 (permalink) Old 11-05-2019, 09:37 PM
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Quote:
Originally Posted by Chuckles2Wheels View Post
Thanks for the tip.
Can i reuse the current ones?
The answer was YES.


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post #7 of 24 (permalink) Old 11-06-2019, 07:03 AM
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Quote:
Originally Posted by Chuckles2Wheels View Post
Thanks for the tip.
Can i reuse the current ones?
Quote:
Originally Posted by mitchy View Post
The answer was YES.

IF they screw off..... a lot of plugs are made these days with the tip molded in and not removable. My original plugs on the 910R were that way. Had to go searching at a local shop where the mechanic had a small pile of them.

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post #8 of 24 (permalink) Old 11-06-2019, 01:55 PM
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Quote:
Originally Posted by theknurl View Post
The NGK CR-9 EIX Iridium spark plug is the standard of the industry (the ND, is the same, just different number )
They should go ~80,000 mi at least
Something must be different here in Oz. I made the mistake of assuming that sort of mileage. When I was hunting a persistent misfire that the VDSTS indicated was a coil issue, but it turned out to be the Iridium plug had very little electrode left. 30,000 kms.

In my garage: 2011 Brutale 1090RR, Triumph Street Triple R
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post #9 of 24 (permalink) Old 11-06-2019, 10:57 PM
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Quote:
Originally Posted by esq'z me View Post
IF they screw off..... a lot of plugs are made these days with the tip molded in and not removable. My original plugs on the 910R were that way. Had to go searching at a local shop where the mechanic had a small pile of them.
If the original plugs had fixed ends.......why would you need screw on ones???
I know why

Last vehicle I saw with those stupid screw on ends was my '67 Triumph T100R
with the useless Champion plugs.......went to NGK and never looked back

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post #10 of 24 (permalink) Old 11-07-2019, 03:54 AM
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Hi Knurl are Champion Plugs still Junk? Many times I seen brand new Champion Plugs dead in the box. The mechanic of course assumes a new plug is good and then ends up pulling his hair out wondering whats wrong?

Question? I have a Gen 1 and a Gen 2 F4 do they come with Iridium plugs? Why I ask is if the bike didn't come with iridium plugs there is a good chance the bike doesn't make enough voltage for Iridium Plugs to make a good spark. Older bikes that electrical systems run at lower voltage run much better with best copper plug .
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