Author Topic: V7 Special/Stone plug boots.  (Read 7407 times)

pete roper

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Re: V7 Special/Stone plug boots.
« Reply #30 on: July 16, 2016, 05:48:26 PM »
Without looking at the NGK book or website Steve I can't remember what the differences are with the second letter for the caps. It might just designate a difference in the angle at the elbow. What I can remember is the suffix letter which relates to the top electrode fitting of the cap. F designates the larger electrode, E designates the threaded top. When fitting aftermarket caps it is sometimes necessary to change the plugs to fit the caps. Over here for instance you cannot get XD05E caps which means you have to swap to a plug with a different electrode fitting.

Essentially though as long as the plug has the right reach, thread and heat range it really doesn't matter if it has one electrode or two. Consult the book, match up the plug and cap, install, ride.

Pete

Offline stevet

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Re: V7 Special/Stone plug boots.
« Reply #31 on: July 16, 2016, 06:29:01 PM »
Thanks, Pete, I appreciate the input.

Steve.
Steve T.
Twin Cities, MN
Sophia, '16 Moto Guzzi V7 II Stone
Feejer, '10 Yamaha FJR
"Il Viaggiatore", The Traveler. A.K.A. Via. 2017 FIAT 124 Spider Classica

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Offline spowell

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Re: V7 Special/Stone plug boots.
« Reply #32 on: July 17, 2016, 02:06:26 AM »
So which plug cap is it:
MI's NGK XBO5F, or
Pete Roper's NGK XDO5F?

Is there agreement on the spark plug, NGK CPR8EA-9?

And where is the likely place to obtain the caps?  I've been web searching some of my local auto parts stores websites for that NGK part and they don't have them.  And it's too late on the Saturday afternoon to start calling local MC shops.

I'll email my local MG dealer and ask them about the tech update.  Closed til Tuesday, though.

Thanks,
Steve.

Here is what I could find on the difference between the XB and XD. Seems to be the plug diameter.



Image found here: http://www.sparkplugs.co.uk/ngk-plug-cap-xb05f
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2014 V7R

Offline Andy1

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Re: V7 Special/Stone plug boots.
« Reply #33 on: July 17, 2016, 12:17:20 PM »
Logically you would think that the XB05F caps were for a B sized plug....but a B sized (14mm) plug does not fit inside them.......while they fit the CPR8EA-9 plug perfectly.
And the plug cap fits down the hole in the cylinder fine.

Not installed mine yet as the originals are OK but it looks like the XB05F / CPR8EA-9 combination is right.

AndyB

Wildgoose Chase Moto Guzzi

Re: V7 Special/Stone plug boots.
« Reply #33 on: July 17, 2016, 12:17:20 PM »

Offline stevet

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Re: V7 Special/Stone plug boots.
« Reply #34 on: July 17, 2016, 03:13:56 PM »
Great info, guys, thanks!

Steve.
Steve T.
Twin Cities, MN
Sophia, '16 Moto Guzzi V7 II Stone
Feejer, '10 Yamaha FJR
"Il Viaggiatore", The Traveler. A.K.A. Via. 2017 FIAT 124 Spider Classica

"What we do during our working hours determines what we have; what we do during our leisure hours determines what we are."
-George Eastman.


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