Spark Plug Indexing - Page 2

Jeff Lee · 01-15-2009, 04:52 PM

What is a surface gap plug?

And I just read a post elsewhere and the racer eliminates (not cut back, eliminated) his ground strap. Anybody have any comments on that? I have a hard time fathoming that being effective...

quickford1 · 01-15-2009, 07:00 PM

I am going to try and post some pictures tonight.
Rich

SSGN · 01-15-2009, 10:31 PM

We dynoed the ground strap off idea,never made any HP but never lost any.I think the no ground strap would be hard on wires and maybe even coils. We like the wider gaps,however after reading Mr. Baileys post I may try tightening up the gaps.

quickford1 · 01-16-2009, 04:43 PM

Here are some pictures of the Autolite X plugs. I have them in AR471X 9, AR3932X, AR3933X, and AR3910X. Any questions call me at 704-784-8376 or Quickford1@yahoo.com
Rich

dlee · 01-16-2009, 10:20 PM

Does anyone run these X plugs and have any results, specifically with smallblock alcohol motor?

Chris Cogan · 01-25-2009, 11:44 AM

Out of curiousity, what is the thinking behind cryogenically treating the plug? I know many Karting guys like surface gap style plugs like the ones shown below. One is a surface gap NGK, the second is a LGS Brisk plug and the last is a multispark Brisk.

01-15-2009, 04:52 PM	#11
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 2 Times in 2 Posts	Re: Spark Plug Indexing What is a surface gap plug? And I just read a post elsewhere and the racer eliminates (not cut back, eliminated) his ground strap. Anybody have any comments on that? I have a hard time fathoming that being effective... __________________ Jeff Lee 7494 D/S '70 AMX

01-15-2009, 07:00 PM	#12
quickford1 Member Join Date: Aug 2008 Location: Davidson, NC Posts: 265 Likes: 450 Liked 18 Times in 10 Posts	Re: Spark Plug Indexing I am going to try and post some pictures tonight. Rich

01-15-2009, 10:31 PM	#13
SSGN Senior Member Join Date: Feb 2006 Posts: 629 Likes: 112 Liked 133 Times in 48 Posts	Re: Spark Plug Indexing We dynoed the ground strap off idea,never made any HP but never lost any.I think the no ground strap would be hard on wires and maybe even coils. We like the wider gaps,however after reading Mr. Baileys post I may try tightening up the gaps.

01-16-2009, 04:43 PM	#14
quickford1 Member Join Date: Aug 2008 Location: Davidson, NC Posts: 265 Likes: 450 Liked 18 Times in 10 Posts	Re: Spark Plug Indexing Here are some pictures of the Autolite X plugs. I have them in AR471X 9, AR3932X, AR3933X, and AR3910X. Any questions call me at 704-784-8376 or Quickford1@yahoo.com Rich Attached Thumbnails

01-16-2009, 10:20 PM	#15
dlee Junior Member Join Date: May 2006 Location: Goldsboro, NC Posts: 30 Likes: 5 Liked 9 Times in 4 Posts	Re: Spark Plug Indexing Does anyone run these X plugs and have any results, specifically with smallblock alcohol motor?

01-25-2009, 11:44 AM	#16
Chris Cogan Junior Member Join Date: Apr 2007 Location: Defiance, OH Posts: 47 Likes: 0 Liked 0 Times in 0 Posts	Re: Spark Plug Indexing Out of curiousity, what is the thinking behind cryogenically treating the plug? I know many Karting guys like surface gap style plugs like the ones shown below. One is a surface gap NGK, the second is a LGS Brisk plug and the last is a multispark Brisk. Attached Thumbnails __________________ Chris Cogan Last edited by Chris Cogan; 01-25-2009 at 11:54 AM. Reason: pictures too small