Improved Combustion

Chris Cogan · 11-27-2008, 06:06 PM

This is one of the most innovative ideas that I've seen in a while. These are one of Conway Witten's creations. Very neat idea!

Chris Cogan · 11-27-2008, 07:45 PM

Sorry, my original picture was too large to upload. Kinda like me right now, full of turkey, ham and all the fixins.

Happy Thanksgiving Everyone. Take care.

Chris Cogan · 11-27-2008, 08:00 PM

Here's how they look installed.

Jeff Lee · 11-28-2008, 12:45 AM

Interesting!

I've heard of big numbers by re-directing the spark plug but unless the plug was pointing directly at the intake valve to start with, have had a hard time believing them. But I'm sure every bit helps. Any dyno improvement numbers available?

Chris Cogan · 11-28-2008, 01:41 AM

Hi Jeff,
I have heard that some super stock fellas have seen 5hp on the dyno when changing from a straight 14mm plug to these angled adaptors and 10mm plugs. I'm not sure which heads they where tested on though. These adaptors can be indexed to give you as much as 10 or 11 degrees I believe and they come in tapered and flat seat configurations.
Another thing to consider is the fact that many engine dynos are blind to changes that affect engine acceleration and transient response at gear changes. The standard acceleration rate for water brake dyno tests is 600 rpm/sec. I'm pretty sure that many SS engines exceed this, especially in low gear. : )
Anyway, I for one plan on testing these more extensively with both dyno and on track anaylsis. I'm also curious to see what these adaptors could do for heads that have angled plugs already. Who's to say that the factory angle is best for every combination. I look at these as an additional tuning tool to find that little extra that we all seek. Take care jeff.

Duane Eiskant II · 11-28-2008, 06:17 PM

How much are they ? can someone send me some contact info for the guy who makes them? Thanks, Duane
Dee9275@yahoo.com

Jeff Lee · 11-29-2008, 06:07 PM

Quote:

Originally Posted by Duane Eiskant II

How much are they ? can someone send me some contact info for the guy who makes them? Thanks, Duane
Dee9275@yahoo.com

Ditto....

Just Observing · 11-30-2008, 03:05 PM

I would check with tech before running those in a stock or super stock car! I have heard those are not legal. Nice but not legal.

Conway Witten · 11-30-2008, 04:04 PM

From: Bruce Bachelder
Sent: Tuesday, November 11,2008 9:15 PM
To: Conway Whitten
Subject: angle plug adapters

Conway: Per conversation with Danny, the NHRA tech dept. has no issue with angle spark plug adapters.

Bruce Bachelder
NHRA Technical Services
317-216-4869 Office
317-216-7599 Fax
BBachelder@nhra.com

SSDiv6 · 11-30-2008, 04:09 PM

Quote:

Originally Posted by Just Observing

I would check with tech before running those in a stock or super stock car! I have heard those are not legal. Nice but not legal.

I agree, some years ago I brought up the subject with NHRA regarding using an adapter in a Ford FE engine to reduce the plug from 18mm/13/16" to 14mm/5/8" plug and was told Stock and Super Stock must use the OEM size spark plug designed for the specific cylinder heads.

11-27-2008, 06:06 PM	#1
Chris Cogan Junior Member Join Date: Apr 2007 Location: Defiance, OH Posts: 47 Likes: 0 Liked 0 Times in 0 Posts	Improved Combustion This is one of the most innovative ideas that I've seen in a while. These are one of Conway Witten's creations. Very neat idea! Attached Thumbnails Last edited by Chris Cogan; 11-27-2008 at 07:43 PM.

11-27-2008, 07:45 PM	#2
Chris Cogan Junior Member Join Date: Apr 2007 Location: Defiance, OH Posts: 47 Likes: 0 Liked 0 Times in 0 Posts	Re: Improved Combustion Sorry, my original picture was too large to upload. Kinda like me right now, full of turkey, ham and all the fixins. Happy Thanksgiving Everyone. Take care.

11-27-2008, 08:00 PM	#3
Chris Cogan Junior Member Join Date: Apr 2007 Location: Defiance, OH Posts: 47 Likes: 0 Liked 0 Times in 0 Posts	Re: Improved Combustion Here's how they look installed. Attached Thumbnails __________________ Chris Cogan Last edited by Chris Cogan; 11-27-2008 at 09:39 PM.

11-28-2008, 12:45 AM	#4
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: Improved Combustion Interesting! I've heard of big numbers by re-directing the spark plug but unless the plug was pointing directly at the intake valve to start with, have had a hard time believing them. But I'm sure every bit helps. Any dyno improvement numbers available? __________________ Jeff Lee 7494 D/S '70 AMX

11-28-2008, 01:41 AM	#5
Chris Cogan Junior Member Join Date: Apr 2007 Location: Defiance, OH Posts: 47 Likes: 0 Liked 0 Times in 0 Posts	Re: Improved Combustion Hi Jeff, I have heard that some super stock fellas have seen 5hp on the dyno when changing from a straight 14mm plug to these angled adaptors and 10mm plugs. I'm not sure which heads they where tested on though. These adaptors can be indexed to give you as much as 10 or 11 degrees I believe and they come in tapered and flat seat configurations. Another thing to consider is the fact that many engine dynos are blind to changes that affect engine acceleration and transient response at gear changes. The standard acceleration rate for water brake dyno tests is 600 rpm/sec. I'm pretty sure that many SS engines exceed this, especially in low gear. : ) Anyway, I for one plan on testing these more extensively with both dyno and on track anaylsis. I'm also curious to see what these adaptors could do for heads that have angled plugs already. Who's to say that the factory angle is best for every combination. I look at these as an additional tuning tool to find that little extra that we all seek. Take care jeff. __________________ Chris Cogan Last edited by Chris Cogan; 11-28-2008 at 01:51 AM.

11-28-2008, 06:17 PM	#6
Duane Eiskant II Senior Member Join Date: Dec 2001 Location: Alexandria, Va Posts: 501 Likes: 261 Liked 57 Times in 33 Posts	Re: Improved Combustion How much are they ? can someone send me some contact info for the guy who makes them? Thanks, Duane Dee9275@yahoo.com __________________ Duane Eiskant 1354 Stock/Super Stock

11-30-2008, 03:05 PM	#8
Just Observing Member Join Date: Mar 2007 Posts: 138 Likes: 0 Liked 0 Times in 0 Posts	Re: Improved Combustion I would check with tech before running those in a stock or super stock car! I have heard those are not legal. Nice but not legal.

11-30-2008, 04:04 PM	#9
Conway Witten Member Join Date: Jun 2003 Location: Shelbyville, KY Posts: 108 Likes: 0 Liked 1 Time in 1 Post	Re: Improved Combustion From: Bruce Bachelder Sent: Tuesday, November 11,2008 9:15 PM To: Conway Whitten Subject: angle plug adapters Conway: Per conversation with Danny, the NHRA tech dept. has no issue with angle spark plug adapters. Bruce Bachelder NHRA Technical Services 317-216-4869 Office 317-216-7599 Fax BBachelder@nhra.com