2 spark plugs a cyl?
01-15-2006, 11:58 PM
#1
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BMW E39
2 spark plugs a cyl?
Call me stupid, but I just came across the S430 specifications page on mbusa and it says that the 4.3 liter motor runs 2 spark plugs per cylinder? Does the same go for all w220 S430s? Or only the new ones?
01-16-2006, 01:25 AM
#2
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Originally Posted by newton22
Call me stupid, but I just came across the S430 specifications page on mbusa and it says that the 4.3 liter motor runs 2 spark plugs per cylinder? Does the same go for all w220 S430s? Or only the new ones?
Seriously, all the M112/113/155 V6 and V8 engines have 2 plugs per cyl. These are found in cars with 32, 320, 43, 50, 500, 55, 600, 65 or SLR on their butts.
01-16-2006, 07:55 PM
#3
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What's the reason? I mean, it isn't really increasing efficiency knowing that N/A V6s nowadays produce more hp and tq numbers that my 4.3L lol.
01-16-2006, 08:31 PM
#4
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Originally Posted by newton22
What's the reason? I mean, it isn't really increasing efficiency knowing that N/A V6s nowadays produce more hp and tq numbers that my 4.3L lol.
1.) The additional spark plug per cylinder increases the effectiveness of the combustion chamber firing, i.e. enhanced performance and lower emissions.
2.) Those of us who sell spark plugs, sell more of them when we can sell 2 per cylinder. (We also like $20.00 platinum plugs)
01-17-2006, 07:57 AM
#5
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MB is not the only manufaturer who has it. The old Corvette crossfire had it centuries ago. And you would not believe it the MB's S-Class even have 6 or 8 spark coils (one per cylinder) to manage a controlled combustion, and reduce pollution.
01-17-2006, 10:32 AM
#6
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Originally Posted by bamberger_1
MB is not the only manufaturer who has it. The old Corvette crossfire had it centuries ago. And you would not believe it the MB's S-Class even have 6 or 8 spark coils (one per cylinder) to manage a controlled combustion, and reduce pollution.
Corvettes NEVER had 2 plugs per cylinder, even the Crossfire and the S class does not have 6 or 8 coils per one cylinder.
Where did you get this BS?
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01-17-2006, 02:52 PM
#8
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Originally Posted by E55AMG99
Corvettes NEVER had 2 plugs per cylinder, even the Crossfire and the S class does not have 6 or 8 coils per one cylinder.
Where did you get this BS?
Where did you get this BS?
I said 1 coil per cylinder, makes 6 for the S320 and 8 for the S430 and S500, right!!!!!!!!!
secondly the Crossfire was a crossfire because it had 2 sparks per cylinder, way back when in the '80's.
If I recall right this might be one of them:
http://cgi.ebay.com/ebaymotors/1984-...QQcmdZViewItem
01-17-2006, 06:24 PM
#9
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Originally Posted by bamberger_1
Hey my friend, reading and comprehending is the magic thing.
I said 1 coil per cylinder, makes 6 for the S320 and 8 for the S430 and S500, right!!!!!!!!!
secondly the Crossfire was a crossfire because it had 2 sparks per cylinder, way back when in the '80's.
If I recall right this might be one of them:
http://cgi.ebay.com/ebaymotors/1984-...QQcmdZViewItem
I said 1 coil per cylinder, makes 6 for the S320 and 8 for the S430 and S500, right!!!!!!!!!
secondly the Crossfire was a crossfire because it had 2 sparks per cylinder, way back when in the '80's.
If I recall right this might be one of them:
http://cgi.ebay.com/ebaymotors/1984-...QQcmdZViewItem
As for the MB remark, I wasn't wearing my glasses when I posted.
