Moparchat - Home of MOPAR enthusiasts worldwide!



Go Back   Moparchat - Home of MOPAR enthusiasts worldwide! > Technical Forums > Performance Talk

Click here to search for Mopar cars and parts for sale.


Reply
 
Thread Tools Display Modes
  #1  
Old 03-06-2011, 09:32 PM
66cornet 66cornet is offline
Registered User
 
Join Date: Dec 2005
Location: Castile/New York
Posts: 105
Gripe lookin for a GREAT race sparkplug!

Once again, I am looking for some info from you guys out there that have had any good luck with a particular "race" plug for my 440...well actually 538

I've looked into NGKr's and also Autolite has a race plug. I wonder if anyone has tried those E3 plugs???

Looking for part's and positive feedback.

I'll be running 11.75:1 compression, race fuel, some street...mostly strip, want a plug that will do me well all summer long

As Always...thanks a bunch!
Reply With Quote
  #2  
Old 03-07-2011, 01:26 AM
cudabob496 cudabob496 is offline
Inactive User
 
Join Date: May 2007
Location: Richland, WA
Age: 71
Posts: 2,018
Default

I use NGKs, and with an MSD system, and good wires, set the gap at .060. I also cut back the negative electrode to expose more of the top of
the positive. That allows a bigger flame kernel to be exposed to the combustion chamber. Don't think you can do much better than a setup like this, but I'm not 100% sure.
Reply With Quote
  #3  
Old 03-07-2011, 01:35 AM
Cudadrag Cudadrag is offline
Registered User
 
Join Date: Dec 2004
Location: Maple Grove, MN
Age: 63
Posts: 819
Default

I use the NGK R5671A-8. The -8 is heat ranged for aluminum head Race gasoline. (I run E-85 which is equivalent) If you run iron head you may consider a -7 (A little warmer thus dissipates heat a little sooner.) If you run Methanol then the -9. These of course are starting points. Reading your plugs is the key.

I have not used E3s. But like you I'm curious. They say flame travel speed is increased (In micro seconds) but this does provide a slightly better burn efficiency. My head guy has tested on his dyno with no measureable increase in power than a comparable Autolite or NGK. The NGK I have found seems to last longer than the Autolite.

I hope this helps. Spark Plugs don't seem to be an exact science. A friend of mine swears by Champions. (And I have seen the better results with his BBC) Yet my motor chews them up (or gunks them) quickly.
Reply With Quote
  #4  
Old 03-07-2011, 06:45 PM
Ray Bell's Avatar
Ray Bell Ray Bell is offline
Registered User
 
Join Date: May 2005
Location: Dalveen, Queensland
Posts: 3,236
Default

Can you get SplitFires there?

My nephew tried them on HQ race cars running about 12:1 compression and got extra horsepower over the best he'd tried till then.

I might try to get him to log in to this thread and tell what he knows, he has tried a lot of stuff.
Reply With Quote
  #5  
Old 03-08-2011, 12:47 AM
cudabob496 cudabob496 is offline
Inactive User
 
Join Date: May 2007
Location: Richland, WA
Age: 71
Posts: 2,018
Default

NGK plugs are sold specific to your compression ratio.
Reply With Quote
  #6  
Old 03-10-2011, 05:55 PM
clone clone is offline
Inactive User
 
Join Date: Dec 2008
Location: Grove City Ohio
Posts: 18
Default

I am running Autolite AR3910 with Indy heads 14.15:1 compression with MSD distributor wires and Digital box with no trouble at all. The are cheaper than the Champion race plugs and my engine builder recommended them as Autolite is what he runs in his B/SS car.
Reply With Quote
  #7  
Old 03-10-2011, 08:15 PM
Dr. Righteous Dr. Righteous is offline
Inactive User
 
Join Date: Dec 1999
Location: RURAL Tennesse
Age: 58
Posts: 1,839
Default

NGKs get my vote.

AVOID Champion plugs like the plague.
Reply With Quote
  #8  
Old 03-11-2011, 03:09 AM
DartGT66 DartGT66 is offline
Inactive User
 
Join Date: Sep 1999
Location: vantaa,finland
Posts: 4,622
Default

I use NGK's, gapped to .040" with MSD. Under 12:1, heat range 6, or 7 at max. Too cold and the pluggs foul easily, too hot and they melt. We use 7's in our pump gas 477 that makes 1580 hp. I don't believe there is any magic in the spark plugs, it either does its job or doesn't. Just use the brand that you feel comfortable with, is the right heat range and works.
Reply With Quote
  #9  
Old 03-11-2011, 07:55 PM
cudabob496 cudabob496 is offline
Inactive User
 
Join Date: May 2007
Location: Richland, WA
Age: 71
Posts: 2,018
Default

And we won't even get into indexing!!
Reply With Quote
  #10  
Old 03-12-2011, 12:20 AM
70AARCuda 70AARCuda is offline
Inactive User
 
Join Date: Jan 2000
Location: las vegas nv
Age: 70
Posts: 522
Default

I love Champion Spark plugs..........
Reply With Quote
  #11  
Old 03-12-2011, 12:24 AM
cageman's Avatar
cageman cageman is offline
Inactive User
 
Join Date: Dec 1999
Location: Bismarck ND
Age: 46
Posts: 5,544
Default

Champions are the best, the other ones are the No Good Kind.
Reply With Quote
  #12  
Old 03-13-2011, 06:08 AM
cudabob496 cudabob496 is offline
Inactive User
 
Join Date: May 2007
Location: Richland, WA
Age: 71
Posts: 2,018
Default

Could probably test 15 different plugs and see only a max horsepower
variance of 5 hp!
Reply With Quote
  #13  
Old 03-13-2011, 10:57 AM
rampage_82 rampage_82 is offline
Inactive User
 
Join Date: Dec 2007
Location: Mountainair NM
Posts: 657
Default

Quote:
Originally Posted by cudabob496 View Post
Could probably test 15 different plugs and see only a max horsepower
variance of 5 hp!
haha, you are correct except if you are running fouled plugs, then the results can be drastic...
Reply With Quote
  #14  
Old 03-13-2011, 04:13 PM
Ray Bell's Avatar
Ray Bell Ray Bell is offline
Registered User
 
Join Date: May 2005
Location: Dalveen, Queensland
Posts: 3,236
Default

Again I ask, have you tried Splitfires?
Reply With Quote
  #15  
Old 03-13-2011, 08:48 PM
Mopar Trac Mopar Trac is offline
Member
 
Join Date: Oct 1999
Location: Tryon, NCUSA
Posts: 200
Default Plugs

Ray
I tried them a few years back and had lots of problems with them. They did not create an even burn and I damaged 4 pistons in the motor. Personally I have had the best luck with Champions and just working my way through the heat ranges until things came together the way I wanted. Not the most scientific way but worked for me.
Reply With Quote
  #16  
Old 03-13-2011, 09:37 PM
Ray Bell's Avatar
Ray Bell Ray Bell is offline
Registered User
 
Join Date: May 2005
Location: Dalveen, Queensland
Posts: 3,236
Default

Funny that...

Young Ben has tried a lot of things, spends a fair bit of time at the dyno, he'd decided that one NGK was the best he could get and then, with prompting, tried the Splitfires along with their leads.

He got a 4hp improvement following the recommendation of the distributor... recommendations relating to how much advance to run and so on.
Reply With Quote
  #17  
Old 03-14-2011, 04:24 AM
DartGT66 DartGT66 is offline
Inactive User
 
Join Date: Sep 1999
Location: vantaa,finland
Posts: 4,622
Default

I have had splitfires too, and some other "magic plugs" like ones with four side electrodes and Brisk plugs with no side electrode at all. In my opinion, waste of money where a regular plug would perform as well.
Reply With Quote
  #18  
Old 03-29-2011, 10:23 AM
mtdrydock mtdrydock is offline
Inactive User
 
Join Date: Mar 2011
Location: MT
Posts: 61
Default

I have been trying to figure out a good plug for Street/Strip use.

The claims from the E3 plug sound great, but I have read they have some quality control issues.

I have also been tempted to try TT plugs.

But then I talked about it with my parts guy today and he claims that he talked to an MSD rep who told him just use a good traditional plug and replace it regularly when using a 6AL.

I am currently using Autolite Platinmums in my magnum, gapped to .035. Would gapping them further gain us anything? we are using a MSD 6AL and MSD coil.
Reply With Quote
  #19  
Old 03-29-2011, 01:01 PM
rampage_82 rampage_82 is offline
Inactive User
 
Join Date: Dec 2007
Location: Mountainair NM
Posts: 657
Default

If you have an MSD, then just run the standard Autolite copper plugs, I would suggest starting with around a heat range of 4 and see if you can get away with it. The platinum plugs usually work very well on a stock ignition on a worn out engine, but not so will with a multi-spark etc... Run the absolute coldest plug that won't foul, these will give you the best performance. The magnums have a very good combustion chamber, and plug placement, so the gimmick plugs are just that.... And yes I would also open up the gap another .010...
Reply With Quote
  #20  
Old 04-13-2011, 12:06 AM
pishta's Avatar
pishta pishta is offline
Senior Member
 
Join Date: Aug 1999
Location: Tustin, CA
Age: 55
Posts: 3,987
Default

I didnt know you could gap a platinum plug? Splitfires tend to lose their electrodes, a few stories about them floating around (I have a set of splitfire "classics" that I pulled out of a truck motor, they have no ceramic ribs!) I was partial to Nippondenso U-groove plugs when I was running a stoicker and they seemed to work fine, dont like Champions, they deteriorate faster than AC's which is what I run now, but Im bush league when it comes to hot rods, many know more than I do. NGK seems to have a very broad range of plugs if you really want to dial it in.
Reply With Quote
Reply

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 Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
July 30th race at Englishtown a Great Success!! SUPERGONZO Drag Racing Forum 1 08-02-2005 07:04 PM
Great Bend Divisional Race 340king Drag Racing Forum 1 05-12-2005 10:59 AM
Great Race DYNO360 Circle Track Chat 0 11-07-2004 03:41 PM
Great Lakes Mopar Race & Show 69HEMI Performance Talk 0 07-24-2002 01:29 PM
Great Lookin' Hood cadman28461 Ram Truck Chat 4 03-14-2001 04:42 PM




All times are GMT -4. The time now is 04:42 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
. . . . .