Hi,
I highly recomend the NGK Iradium tipped plugs.
They took my 3AJ Tenere and my girlfriends 3TB from UK to Aus on a round about route, I changed them for regular plugs in Aus and then changed them back as the old, iradium plugs were still giving better performance.
They improved the lower rpm performance a little, cost twice as much but lasted 3 times as long.
If the recommended grade of plug indicates over heating on your bike, are you sure that your mixture is correct. Has the exhaust system been changed and now youe carb's need adjusting ?
Perhaps the inlet stub between cylinder head and carb is leaking air.
I would look for these sorts of problems before using a non-standard heat range plug
Mark
|