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how many detonations......?

Old Dec 20, 2005 | 07:50 PM
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Default how many detonations......?

In one minute.... How many detonations occur in an LS1 engine @ 1000 rpms?

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Old Dec 20, 2005 | 08:13 PM
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Originally Posted by AceFregia
In one minute.... How many detonations occur in an LS1 engine @ 1000 rpms?

Hopefully zero, but if you're asking how many times combustion takes place; 4000.
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Old Dec 20, 2005 | 10:28 PM
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Originally Posted by Katech
Hopefully zero, but if you're asking how many times combustion takes place; 4000.
Actually 2,000. remember a cylinder fires every other revolution. Its not a two stroke.
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Old Dec 21, 2005 | 01:10 AM
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isn't it a spark waste system though and the coil fires twice per cycle?
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Old Dec 21, 2005 | 01:45 AM
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You'll have 1 missfire out of 6>8 firing in a conventional plug.
0 missfires is not possible.

But detonation (pre-ignition) should be ZERO.
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Old Dec 21, 2005 | 08:13 AM
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Originally Posted by SUX2BU
Actually 2,000. remember a cylinder fires every other revolution. Its not a two stroke.
You are right that it is every other rev, but look at the math.

1000 cycles firing every other revolution=500 ignitions per cylinder

500*8=4000
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Old Dec 21, 2005 | 01:32 PM
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Originally Posted by Katech
You are right that it is every other rev, but look at the math.

1000 cycles firing every other revolution=500 ignitions per cylinder

500*8=4000
oops didn't see he put LS1 in the equation. i thought he was still talkin about a 4 banger like he asked in the Texas ection.
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Old Dec 21, 2005 | 01:57 PM
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Originally Posted by Zeus
isn't it a spark waste system though and the coil fires twice per cycle?

The question is how many times combustion takes place, not ignition fires.
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Old Dec 21, 2005 | 05:02 PM
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Originally Posted by Katech
You are right that it is every other rev, but look at the math.

1000 cycles firing every other revolution=500 ignitions per cylinder

500*8=4000

4 combustion strokes per revolution.

4*1000 =4000. same thing different math.

http://www.cadcourse.com/winston/Dow.../aniv8-120.m1v
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Old Dec 21, 2005 | 05:10 PM
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Originally Posted by SUX2BU
Actually 2,000. remember a cylinder fires every other revolution. Its not a two stroke.

Some more different math

8 cylinders , firing every other revolution. (in other words only half the time)

8 * .5 x 1000 revolution = 4000
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