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Workshop => Engine and Bottom End => Topic started by: The_Steve_Man on January 10, 2014, 07:21:32 PM

Title: BR5ES Plugs
Post by: The_Steve_Man on January 10, 2014, 07:21:32 PM

Is there anybody using br5es plugs? We used to run them and seemed to give our bikes more power.  I guess because they are such a hot plug.  
 I was at the parts store getting plugs and thought about these.

Title: BR5ES Plugs
Post by: atvmxr on January 10, 2014, 09:12:23 PM

I would maybe use a 7 , definitely not a 5

Title: BR5ES Plugs
Post by: Pumashine on January 10, 2014, 09:43:46 PM

Quote from: atvmxr;21976

I would maybe use a 7 , definitely not a 5

A 7 if you were jetted extremely rich!

Title: BR5ES Plugs
Post by: fast350r on January 10, 2014, 10:16:46 PM

I thought you only ran that hot of a plug if your motor is toast , low compression . I use b8es plugs

Title: BR5ES Plugs
Post by: fearlessfred on January 11, 2014, 12:57:47 AM

the plug only needs to be hot enough to not foul when jetted proper.I run a 9 in the dunes running wide open most of the time and have used a 10 for hill racing

Title: BR5ES Plugs
Post by: ledperformance on January 12, 2014, 12:48:55 AM

B7's work great most of the time and give more accurate plug reading. I always use B8's on customers bikes. I have never looked at a B9 that wasn't too cold. We raced MX and TT nationals with B8's.  (and won) We were running 230 - 245 lbs of compression. We never had detonation problems.

Title: BR5ES Plugs
Post by: fearlessfred on January 12, 2014, 03:17:13 PM

Quote from: ledperformance;22035

B7's work great most of the time and give more accurate plug reading. I always use B8's on customers bikes. I have never looked at a B9 that wasn't too cold. We raced MX and TT nationals with B8's.  (and won) We were running 230 - 245 lbs of compression. We never had detonation problems.

are you referring to reading the ground strap