which plug
im putting in a bbk and was wondering if I should use a different plug from the br7hs
|
ngk irridium works best for me
|
thanks but I need a plug number and should I go with a cooler plug from the 50cc plug
|
Quote:
|
Don't think this will answer your question directly, but my 150cc calls for the same heat range. Came from the factory with a standard NGK C7HA...still going strong at 5800 miles
Looked like this at 4500 miles....Don't think I will ever put an irridium in my scoot http://scootdawg.net/picture.php?alb...&pictureid=550 |
That's a perfect looking plug color !!!!
|
I have a 49cc scoot and use C7HSA. Other numbers on box are 4629.
Took a few rides to settle in, but not runs very smooth |
When doing a BBK upgrade, which spark plug to use is only 1 consideration. and should be the last based upon what you did before it
the following information is relevant to GY6 50cc (39mm) stock engines: the stock 39mm piston has a convex dome that increases compression. the stock 44mm piston has a convex dome that increases compression the BBK upgrade 47mm, 50mm, & 52mm piston has a concave dome, reduces compression heads; stock 39mm & 44mm have smaller areas, higher compression 47 to 52 mm have larger areas & bigger valves, lower compression gaskets; many of the BBK suppliers supply gaskets that are thicker which reduces compression, and puts stress on the camshaft and journals; stress is extra friction which reduces power and harms the engine done right a 47mm BBK can supply enough power to perform exceptionally well and in some cases outperform the 50 & 52 only 1 supplier I have found that offers enough product differences to allow customization and obtaining the most power and he has to source from several wholesalers to get it |
All times are GMT -4. The time now is 10:14 AM. |
Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.