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Frank
PostPosted: Wed Mar 18, 2020 5:22 pm 

Joined: Sun Jun 12, 2011 7:15 pm
Posts: 307
Location: Maine
http://www.f2motorcycles.ltd.uk/Brisk%2 ... Plugs.html

Anyone ever heard of these? I read about them on a Jawa/CZ list I follow.... :shock:
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suthernS2
PostPosted: Wed Mar 18, 2020 7:17 pm 
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Joined: Thu Jun 09, 2011 6:36 am
Posts: 1373
Location: Inman,S.C.
I've never heard of them. Give them a try and tell us what you think.
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Evans Ward
PostPosted: Wed Mar 18, 2020 7:51 pm 
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Joined: Wed Jun 08, 2011 7:32 pm
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Location: Macon, GA
Never heard of them either. I’m about to try some NGK Iridium plugs Based on recommendation on my Suz Water Buffalo.

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RODH2
PostPosted: Wed Mar 18, 2020 11:05 pm 
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Joined: Thu Jun 09, 2011 7:03 am
Posts: 4612
Location: Milang, South Australia
While on the subject of plugs, I just got some NGK BU8H's which are a heat-range specific surface-gap plug, just like the old days. Maybe some of the outboard-motor guys have had some experience with these, they are new to me! Recommended by Nev. Lush, so I'll be using them! :think:

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Ja-Moo
PostPosted: Thu Mar 19, 2020 9:52 am 
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Joined: Tue Jun 07, 2011 6:37 am
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Location: Rio Rancho, New Mexico
I tried some of the surface gap plugs, could tell no difference. Nev did say there was a bit more hp on the dyno, but nothing one could feel.

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DGA
PostPosted: Thu Mar 19, 2020 5:54 pm 
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Joined: Thu Sep 29, 2016 4:32 am
Posts: 615
Location: Indianapolis, IN
I tried the surface gap plugs on my H1 years ago, I got slight detonation with them, figured it was because of the larger gap, not sure.

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Stev-o
PostPosted: Mon Mar 23, 2020 3:30 pm 

Joined: Sat Oct 04, 2014 3:45 am
Posts: 802
Location: Cen Tex
RODH2 wrote:
Maybe some of the outboard-motor guys have had some experience with these...


Yes, I used them when I had an outboard, I think it was my Mercury 200 [or my Johnson 235?]
I miss those old Checkmate boats, I had two, they literally flew!

Never thought of using surface gap plugs in my H's...

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