$المهندس$
08-08-2007, 02:00 AM
السلام عليكم ورحمه الله ..
كيف الحال و الاحوال :3rbe060: >>> شنو هل اهبل خخخخ
المهم و انا اتجول في مجله هوت روود صادفت مقال خطير ؟؟؟ تغير ترتيب الاشعال لطاقه اضافيه معقول ؟؟
Firing Order Basics
First, let's give you a clue what we're talking about. A 4/7-swap cam changes the engine's firing order, moving the power stroke for cylinder 4 to where 7 used to be, and vice versa. Therefore, a stock Chevy firing order of 1-8-4-3-6-5-7-2 becomes 1-8-7-3-6-5-4-2. To understand how this is done, you need to know about companion cylinders, which are the pairs of cylinders that reach top dead center (TDC) and bottom dead center (BDC) at the same time. On a four-stroke V-8 that fires every 90 degrees (that's any production V-8 you're working on), you can find the companion cylinders by comparing the first half of the firing order to the second half like this:
1-8-4-3
6-5-7-2
http://www.hotrod.com/techfaq/113_0701_lunati_cams/index.html
ممكن ديتيلس اكثر لانه مخي توقف عن التفكير :d
كيف الحال و الاحوال :3rbe060: >>> شنو هل اهبل خخخخ
المهم و انا اتجول في مجله هوت روود صادفت مقال خطير ؟؟؟ تغير ترتيب الاشعال لطاقه اضافيه معقول ؟؟
Firing Order Basics
First, let's give you a clue what we're talking about. A 4/7-swap cam changes the engine's firing order, moving the power stroke for cylinder 4 to where 7 used to be, and vice versa. Therefore, a stock Chevy firing order of 1-8-4-3-6-5-7-2 becomes 1-8-7-3-6-5-4-2. To understand how this is done, you need to know about companion cylinders, which are the pairs of cylinders that reach top dead center (TDC) and bottom dead center (BDC) at the same time. On a four-stroke V-8 that fires every 90 degrees (that's any production V-8 you're working on), you can find the companion cylinders by comparing the first half of the firing order to the second half like this:
1-8-4-3
6-5-7-2
http://www.hotrod.com/techfaq/113_0701_lunati_cams/index.html
ممكن ديتيلس اكثر لانه مخي توقف عن التفكير :d