Frank,
NGK recommends BP6HS for the TR3, the next hotter plug would be BP5HS.
Tony is very right in that you are much better to err on the cold side
rather than hot, I have seen holes burned in pistons from too hot a plug.
Bill Beecher
'58 TR-3A TS/30766 L (On the road in 2009!)
"A Triumph is man's best friend, it always comes when it is called...of
course, some times it is difficult to make it go"
-----Original Message-----
From: triumphs-bounces@autox.team.net
[mailto:triumphs-bounces@autox.team.net] On Behalf Of Tony Drews
Sent: Saturday, October 10, 2009 7:57 AM
To: triumphs@autox.team.net
Subject: Re: [TR] tr3 hot plugs
I'm pretty sure I'm in "plain text" this time...
- Tony
Also, from the NGK website:
When making spark plug heat range changes, it is better to err on the side
of too cold a plug. The worst thing that can happen from too cold a plug is
a fouled spark plug, too hot a spark plug can cause severe engine damage
- Tony
PS - forgot to copy the list on my first response.
At 11:22 PM 10/9/2009, Tony Drews wrote:
I've I'm understanding the NGK heat charts, NGK BP7-HS would be a "standard"
plug. BP6-HS would be the next "hotter" plug. I'm not totally sure that
the BP7-HS is the "standard" plug but it's what I run in my race TR-4. I
have a Kawasaki bike that would foul a plug occasionally and by going from a
"7" 3rd digit plug to a "6" 3rd digit plug I solved the issue (or at least
worked around it).
- Tony Drews
At 09:08 PM 10/9/2009, you wrote:
whats the next "hotter" plug for my tr3 after the standard?
thanks
frank
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