Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 10-10-2003, 09:28 PM
haasman's Avatar
Registered User
 
Join Date: Jun 2001
Location: San Francisco, CA
Posts: 3,097
From the Lexus Forum: Cutting Spark Plugs ....

-First off, I don't recommend this.
-Second, I am just providing an informational link.
-Third, I do not have an ax to grind on whether one car or another is better, or worse. (Well OK, I do like Mercedes)

Cutting plugs:
http://www.georgenitta.com/kitv/sparkplugs.wmv

Link found at:
Lexusclub

Enjoy

Haasman
__________________
'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)

Last edited by haasman; 10-11-2003 at 09:07 PM.
Reply With Quote
  #2  
Old 10-10-2003, 09:57 PM
blackmercedes's Avatar
Just a guy
 
Join Date: Dec 2000
Location: St. Albert, Alberta, Canada
Posts: 3,492
The spark does not "burn" the fuel, but ignites it. The fuel burns when an ignition source is used and O2 is supplied. I agree that spark distribution can assist in ensuring complete combustion, however I am not sure that cutting the electrode back is the answer.

"Lots more horsepower and better fuel economy..." I really doubt the HP claim. Most modern engines are running pretty near design peak.
__________________
John Shellenberg
1998 C230 "Black Betty" 240K

http://img31.exs.cx/img31/4050/tophat6.gif
Reply With Quote
  #3  
Old 10-10-2003, 10:03 PM
Registered User
 
Join Date: Aug 2001
Location: Evansville, Indiana
Posts: 8,150
Just a bigger gap (hence higher voltage spark from the increased resistance), and more surface spark effect.

In some engines, this will make a difference. Hans tells me they used to open up the gap to almost a full 1 mm in one of the 60's sixes (don't remember which one) and that gave much better idle and off line performance. Only worked in the one, in either of the other two common ones (230, 250, 280), the opposite was true, it ruined the idle.

All depends on the engine, I suppose, just like some engine run better on a certain brand of spark plug, or are greatly improved by indexing the plugs while other it doesn't matter.

I'm perfectly happy with the Bosch Platinums (single electrode, straight non-resistor wireset) in the 280. My problem there is keeping the points clean, I suppose I need to de-oil the upper part of the distributor.

Peter

Peter
__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
Reply With Quote
  #4  
Old 10-11-2003, 05:38 AM
Registered User
 
Join Date: Sep 2002
Posts: 150
hmmm

NGK / Bosch billion pound research budget for F1 / indy car racing

Vs.

some bloke in his garage.

discuss.
__________________
C140 420 CL
W114 280CE pimpmobile
W114 250/8 Hillclimber with M110 and bike carbs - got any hot cams?
Reply With Quote
  #5  
Old 10-11-2003, 11:10 AM
Registered User
 
Join Date: Feb 2003
Location: Ontario, Canada
Posts: 3,160
Quote:
Originally posted by guydewdney
hmmm

discuss.
Some time ago I invented a carburetor that would give 100 mpg on a V 8 engine.
One of the big oil companies bought the idea, just to shut me up.
__________________
2007 C 230 Sport.
Reply With Quote
  #6  
Old 10-11-2003, 11:26 AM
Registered User
 
Join Date: Aug 2001
Location: Evansville, Indiana
Posts: 8,150
There is no free lunch.....
__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
Reply With Quote
  #7  
Old 10-11-2003, 11:27 AM
blackmercedes's Avatar
Just a guy
 
Join Date: Dec 2000
Location: St. Albert, Alberta, Canada
Posts: 3,492
Quote:
Originally posted by manny
Some time ago I invented a carburetor that would give 100 mpg on a V 8 engine.
One of the big oil companies bought the idea, just to shut me up.
Really? How did you get special treatment? They just killed me to shut me up about my 200mpg carb set-up...

(I dipped it in Slick 50...)
__________________
John Shellenberg
1998 C230 "Black Betty" 240K

http://img31.exs.cx/img31/4050/tophat6.gif
Reply With Quote
  #8  
Old 10-11-2003, 12:12 PM
I told you so!
 
Join Date: Jun 2002
Location: Motor City, MI
Posts: 2,790
Milliseconds faster by shortening the electrode???? I guess electrical conduction through metal isn't fast enough for this guy!... and the findings from billions spent on spark plug research by the likes of Champion, Motorcraft, A/C, Bosch, and NGK pale in comparison with the findings that this guy has come up with!

I won't hold my breath waiting to see these new plugs on the market, nor articles on this development in the respected automotive engineering magazines.
__________________
95 E320 Cabriolet, 140K
Reply With Quote
  #9  
Old 10-11-2003, 01:10 PM
Registered User
 
Join Date: Feb 2003
Location: Ontario, Canada
Posts: 3,160
Quote:
Originally posted by Kestas

I won't hold my breath waiting to see these new plugs on the market, nor articles on this development in the respected automotive engineering magazines.
Splitfire ?
__________________
2007 C 230 Sport.
Reply With Quote
  #10  
Old 10-11-2003, 09:02 PM
I told you so!
 
Join Date: Jun 2002
Location: Motor City, MI
Posts: 2,790
You're right, manny. Goes to show you there's a sucker born every minute.
__________________
95 E320 Cabriolet, 140K
Reply With Quote
  #11  
Old 10-11-2003, 10:11 PM
Registered User
 
Join Date: Aug 2001
Location: Evansville, Indiana
Posts: 8,150
"Splitfire" electrodes (multielectrode plugs) have been around since WW1. Used in aircraft engines to get better ignition....

Mazda used them in the first rotary engines, too.

Peter
__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 11:53 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page