- Joined
- Nov 29, 2013
- Messages
- 567
Looking at that Norton plug I would say that you could advance the timing a degree or two.
Looking at that Norton plug I would say that you could advance the timing a degree or two.
so i order BP7ES plugs from 2 sellers on E BAY because the ad clearly show them. guess what, both sellers send resistor type. so now i get to dispute these transactions!
Why? Whats the down side?Never put a hotter plug in, unless it’s to fix an actual running problem that is caused by a cold plug.
Dont know for sure. Just trying to learn. I have a fouling issue I'm chasing. (No need to get into that topic on this thread). I use Champion N7YC's. Can I go with a little hotter plug till i get the fouling sorted without causing harm?Pre-ignition.
What’s the up side?
Dont know for sure. Just trying to learn. I have a fouling issue I'm chasing. (No need to get into that topic on this thread). I use Champion N7YC's. Can I go with a little hotter plug till i get the fouling sorted without causing harm?
Dont know for sure. Just trying to learn. I have a fouling issue I'm chasing. (No need to get into that topic on this thread). I use Champion N7YC's. Can I go with a little hotter plug till i get the fouling sorted without causing harm?
not sure I totally understand your post, but as it starts out, you seem to be indicating things are OK. in reference to your coil statement, new 6V coils, and I might add, timing's at 28°, running ethanol free gas, and i'm pretty much at sea level. one additional thing - running, what I believe is the original exhaust - mufflers (welded mutes) and header pipes. back pressure should be as factory designed. performance wise, I can't complain although I have nothing to compare it to. bike usually starts with 1 or 2 kicks, relatively smooth idle (1K rpm), and pulls fairly strong through the gears. my 74 was DOA when I bought it - having no experience with old british bikes, I could only put things back to factory specs. the only significant mod was the addition of a tri-spark ignition. since is don't seem to have issues, might as well leave things as is.
That IS about how youd run em , back on real ? gas , in the 70s . A Triumph, anyway. If you lived in the sticks so the I.o.M. T.T. course bore a remarkable likeness to the nearby roads .
So All Out , chin on the tank , there was some leeway for barometric conditions etc .
Theory was ere rich for tourque / acceleration . With a decent ( free breathing ) exhaust , she'll tend leaner under sustained top gear wide open operation in most circumstances .
Therefore it wouldnt go ' overlean ' . which would lead to tears .
Tho the Commando went all white everywhere insides from the plugs to the aft of the exhaust , at continuous high speeds . But wernt no standard Commando .
Then we'll start on about real coils , if you want real performance .
Hot Plugs would be no remedy for weak coils / spark - ANYWAY . and still maintain the dangers . a minimum 8 mm white / blue H T spark is madatory .
a 1/2 inch ( plus ) H T ' jump' is vastly smoother running . No stutter & bonk . But the front can tend to lift if the rest of the machine opperates as well .
'A major contribution to road safety' then? As Robert Marks used to say.. given that they seem to encourage people not to ride their bikes with them inAfter reading about their wonderful snake oil type properties in a classic magazine, I bought some Brisk plugs.
I‘m not sure what they run like as I’m not sure I’ll fit them. I bought 4 pairs and when I took them out of the boxes the plug gaps ranged from .030” to zero... yes zero. And none of the electrodes lined up centrally.
With that level of manufacturing quality, I am rather reluctant to put them in my P&J...
Conclusion: Don’t buy any.