Lockandload187
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Ty all for the advice + feedback. KC where are you from need repairs ;p lol
NGK BR7HS spark plug
- Thread starter Lockandload187
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HeadSmess
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ngk
B= thread diameter.
R= has internal resistor
7= heat range
H= thread length (the critical factor in this thread...oh. a pun. ha ha.)
S= ngk standard series.
its FINE. its the IDEAL PLUG. the difference in thread length you detect is one, two threads at most... not a whole 12mm like on an E series plug... if it is...somethings seriously wrong
P (or projected electrode, as in BPR7HS) gets the flame kernel a bit too close to the piston for my liking. i do use them ,just dont buy them specifically anymore.
CJ8 (champion stubby lawnmower plug) works just as well, but has a shorter thread and ceramic insulator than the ngk H series plug. good for one particular application i have where space is a concern. if there was a BM6H or anything like that, id use that instead...
in NGK, a cj8 is a BM6A... B being the thread diameter, thats right for this engine too. M is that the plug is only short, 6 is heat range, and the A is thread length...just a few mm shorter than the H series.
its really quite simple after a while, but... for now...
stick with the tried and true B7HS (BR7HS, **5HS, *6HS... whatever... R is preferable really). the plug you have.
B= thread diameter.
R= has internal resistor
7= heat range
H= thread length (the critical factor in this thread...oh. a pun. ha ha.)
S= ngk standard series.
its FINE. its the IDEAL PLUG. the difference in thread length you detect is one, two threads at most... not a whole 12mm like on an E series plug... if it is...somethings seriously wrong
P (or projected electrode, as in BPR7HS) gets the flame kernel a bit too close to the piston for my liking. i do use them ,just dont buy them specifically anymore.
CJ8 (champion stubby lawnmower plug) works just as well, but has a shorter thread and ceramic insulator than the ngk H series plug. good for one particular application i have where space is a concern. if there was a BM6H or anything like that, id use that instead...
in NGK, a cj8 is a BM6A... B being the thread diameter, thats right for this engine too. M is that the plug is only short, 6 is heat range, and the A is thread length...just a few mm shorter than the H series.
its really quite simple after a while, but... for now...
stick with the tried and true B7HS (BR7HS, **5HS, *6HS... whatever... R is preferable really). the plug you have.
KCvale
In memory of KCvale 1959 - 2019
I am in Phoenix Arizona 85021.
I am not a retail parts supplier or dealer, most everything I build is a custom job to the customers needs, budget, and desired style.
In short I am having too much fun to think about producing parts for more than my own needs as that sounds like real wor.. wor.. wor.. ah you know, that other dirty 4 letter word ;-}
I am not a retail parts supplier or dealer, most everything I build is a custom job to the customers needs, budget, and desired style.
In short I am having too much fun to think about producing parts for more than my own needs as that sounds like real wor.. wor.. wor.. ah you know, that other dirty 4 letter word ;-}
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