Fabian
Well-Known Member
After reading posts on the superior performance of NGK spark plugs, i decided to do a basic test.
I chose three spark plugs: an unknown plug out of a chainsaw, an NGK BP6HS and an NGK BP8HS-10.
The BP8HS-1 is the same type of plug as the BP6HS but 2 heat ranges cooler and the "1" designates it has a 1mm electrode gap.
The chainsaw plug must be a reasonably cool plug like the BP8HS-10 and the BP6HS is a hotter plug as evidenced by the clean burn on the electrode.
I was surprised just how much hotter the BP6HS ran that the BP8HS-10, a bit too hot in my opinion.
I'll be sticking to the BP8HS-10 as the engine seems to run a bit smoother and the burn colour is a bit more comforting than the BP6HS.
The conditions for the test were wide open throttle with an untouched factory assembled carburettor and 98 octane unleaded fuel with 20:1 oil ratio.
The new plugs were run for approx 10 kilometers or 6 miles before the photos were taken.
As i tow a modified bicycle trailer weighing 25 kilos; i'm always running at wide open throttle, uphill or downhill because i've installed a SickBikeParts shift kit.
The engine does not get over revved but it works awfully hard towing the extra weight.
Fabian
I chose three spark plugs: an unknown plug out of a chainsaw, an NGK BP6HS and an NGK BP8HS-10.
The BP8HS-1 is the same type of plug as the BP6HS but 2 heat ranges cooler and the "1" designates it has a 1mm electrode gap.
The chainsaw plug must be a reasonably cool plug like the BP8HS-10 and the BP6HS is a hotter plug as evidenced by the clean burn on the electrode.
I was surprised just how much hotter the BP6HS ran that the BP8HS-10, a bit too hot in my opinion.
I'll be sticking to the BP8HS-10 as the engine seems to run a bit smoother and the burn colour is a bit more comforting than the BP6HS.
The conditions for the test were wide open throttle with an untouched factory assembled carburettor and 98 octane unleaded fuel with 20:1 oil ratio.
The new plugs were run for approx 10 kilometers or 6 miles before the photos were taken.
As i tow a modified bicycle trailer weighing 25 kilos; i'm always running at wide open throttle, uphill or downhill because i've installed a SickBikeParts shift kit.
The engine does not get over revved but it works awfully hard towing the extra weight.
Fabian