0
What heat range in an NGK plug is required for a 1979 Yamaha XS750 Special?
Blackie1213
The temperature of the spark plug's firing end must be kept low enough to prevent pre-ignition, but high enough to prevent fouling. This is called "Thermal Performance", and is determined by the heat range selected. The heat range has nothing to do with the amount of voltage going through the plug. Also plugs remove heat from the combustion chamber not add it.
1977-83 Yamahas used the NGK B-8ES or BP7ES gapped at about 0.6 - 0.7 millimetres or 0.024 - 0.028 inches .So your heat range equals a 7 or 8 eaqual a "colder" or cooler plug.
A cold spark plug has a shorter insulator nose and absorbs more combustion chamber heat. This heat travels a shorter distance, and allows the plug to operate at a lower internal temperature. A colder heat range is necessary when the engine is modified for performance, subjected to heavy loads, or is run at a high rpm for a significant period of time. Colder spark plugs remove heat quicker, reducing the chance of pre-ignition/detonation.
Wiki User
∙ 16y ago
Add your answer:
Earn +20 pts
Where do you purchase a Yamaha NS10?
Try Ebay,they have a huge range of musical instruments.Check my link
How much horsepower does a 1990 Yamaha YZ250 have?
Stock it would be in the 45-47hp range.
How much horsepower does a Yamaha YZ 250 have?
Stock it would be in the 45-47hp range.
2002 Yamaha ttr 125 for 900?
Yes, I've seen a few in this price range.
Wrf 450 o5 how fast Yamaha?
With stock gearing it will be in the 88 - 92 mph range.
What practical differences are there between the use of RANGE RANGE RANGE versus Hyperbolic navigation.?
Number of Required stations
Where can one purchase a Yamaha Rhino 660?
Yamaha Rhino 660 is a small-sized tractor. They can be bought from the website tractorhouse and they come in a variety of different designs and models. The prices range from $5000 to $10,000.
Range range range versus hyperbolic navigation system?
one of the main practical difference is the number of required stations
I want to buy a bike within a range 1 to 1.5 lackplease recommend some.?
An old 1975 Yamaha 150 or FZ-150 are good bike options in this range
Why did economics specialization becomes common in civilization?
There was more to do than look for food. There were many different jobs to do. Civilizations required a wide range of jobs.
What type of instrument is a baritone?
The best brand for a baritone is selmer. the best brand is def king or bach
What is the price of a used Yamaha Aerox?
The price of a used Yamaha Aerox of course varies depending in the quality and age of the bike. They generally range from å£300 - å£1000. But always keep an eye out for a bargain.
