|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
02-13-2018, 01:48 PM | #1 |
Member
Join Date: Aug 2014
Location: Grand Rapids MI
Posts: 45
|
Indexing Spark Plugs
Does anyone know of indexing washer availability for the standard 3x size plugs, or has anyone ever messed with them in regards to the model a? It would seem that detonation reduction and better flame travel could be possible by putting the ground electrode at the back of the chamber. Just curious. I always did it on a Lingenfelter corvette i had built by them years ago per their instructions, and just watched a you-tube video with a small brigs and stratton flat head odor with a plexiglass head, running with a ultra high speed camera. they weren't indexing the plugs in the video, but it sure seems like the flame travel and detonation reduction could be improved by having the group electrode indexed.... Thoughts?
|
02-13-2018, 02:04 PM | #2 |
Senior Member
Join Date: May 2010
Location: on the Littlefield
Posts: 6,159
|
Re: Indexing Spark Plugs
No matter what I have tried I haven't been able to get pinging/ detonation out of a properly restored stock engine--- I even tried old gas that made the lawnmower knock under load, --- full spark advance, full throttle from 5 mph in 3rd going up the steepest hill around-- this is with 3X plugs---
When I had a worn cam and the valves were sunk from many valve grinds then I could get it sometimes with bad gas |
Sponsored Links (Register now to hide all advertisements) |
|
02-13-2018, 02:17 PM | #3 |
Senior Member
Join Date: May 2012
Location: Chillicothe, Missouri
Posts: 1,176
|
Re: Indexing Spark Plugs
I seriously doubt you will see any gain or loss as the plug is not projected into the combustion chamber like a more modern style engine is.
Smokey Yunick invented the Projected core spark plug back when he was working with Champion.
__________________
"If I asked people what they wanted they would have said faster horses." -Henry Ford "Primitive technology is not a design flaw" 1928 Ford Model A Roadster Pickup 1930 Gordon Smith Air Compressor 1941 Willy's Pickup 1960 Thunderbird-For Sale 1964 Buick Riviera 2x4 425 1965 Pontiac GTO, 455 Super Duty 2004 Dodge Ram SRT-10, V-10 Viper 1977 Charger Jet Boat,460 Ford,Jacuzzi Jet Front Engine Nostalgia Dragster,Supercharged 296 "Fullrace Flathead" Ford Engine Build up on DVD ask |
02-13-2018, 02:21 PM | #4 |
Senior Member
Join Date: Jun 2010
Location: 34.22 N 118.36 W
Posts: 1,057
|
Re: Indexing Spark Plugs
Mark,
Good question, especially since you had the Lingenfelter Vette experience. In my opinion, it is wasted effort in the Model A motor. The technology advances made in the last 60 or 70 years have proven that the original designs were not the most efficient. The latest design combustion chambers has shown substantial increases in power and one factor is the placement of the spark plug along with C/R and chamber shape. John
__________________
As Carroll Smith wrote; All Failures are Human in Origin. |
02-13-2018, 02:35 PM | #5 |
Senior Member
Join Date: May 2010
Location: Alabama
Posts: 8,099
|
Re: Indexing Spark Plugs
How would the placement of the spark plug work out with the lion head ?
|
02-13-2018, 03:14 PM | #6 |
Member
Join Date: Aug 2014
Location: Grand Rapids MI
Posts: 45
|
Re: Indexing Spark Plugs
Sponsored Links (Register now to hide all advertisements)
But, for $10 in indexing washer (if available) and a little time, id be up for a little better effency/flame travel.... was amazed after seeing the video of a flat head chamber running in slow motion.... also was referring to a stock/stock type chamber (brumfield, C, snyders 5.5 or 6.0). not a center piston plug lion or ohv set up, understandably those would be different. |
02-13-2018, 03:46 PM | #7 |
Senior Member
Join Date: Jun 2012
Location: Long Island,NY
Posts: 1,555
|
Re: Indexing Spark Plugs
Since you are dealing with a flat surface under the plug base, I would try McMaster Carr. Listed under "Low Carbon Steel Round Shims", are a variety of ID dimensions and thickness of .0005 and up. Stack them up and get the electrode where you want it.
|
02-13-2018, 04:13 PM | #8 |
Senior Member
Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,560
|
Re: Indexing Spark Plugs
Indexing spark plugs is about as useless as trying to milk a butterfly.
Bill Abnoxious
__________________
"THE ASSISTANT GURU OF STUFF" |
02-13-2018, 04:24 PM | #9 |
Senior Member
Join Date: Dec 2011
Location: SW Idaho
Posts: 970
|
Re: Indexing Spark Plugs
Bill, you might get buttermilk.
|
02-13-2018, 04:31 PM | #10 |
Senior Member
Join Date: Jun 2014
Location: Melbourne, Australia
Posts: 7,496
|
Re: Indexing Spark Plugs
Is this April fool's day??
__________________
I'm part of the only ever generation with an analogue childhood and a digital adulthood. |
02-13-2018, 04:47 PM | #11 |
Senior Member
Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,560
|
Re: Indexing Spark Plugs
I'm ticked off, my grocery delivery shorted my BUTTERMILK today
I have a bottle of "FIREFLY" Lamp fuel, "wunder" how many LIGHTNIN' Bugs they had to "milk"????---As difficult as checkin' the BALLS, on a MOTH (Hold STILL!)--LOL Bill Goofy
__________________
"THE ASSISTANT GURU OF STUFF" |
02-13-2018, 09:57 PM | #12 |
Senior Member
Join Date: Oct 2017
Posts: 563
|
Re: Indexing Spark Plugs
Add 1 tablespoon of vinegar or lemon juice to 1 cup of whole milk to make a substitute, wait 5 minutes. Good when making ranch dressing or buttermilk pancakes/biscuits etc. The latter needs the acidity that buttermilk provides to react with the baking powder. And that gives ya fluffy pancakes and biscuits, jus' like Grandma made!
|
02-14-2018, 09:25 AM | #13 | |
Senior Member
Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,560
|
Re: Indexing Spark Plugs
Quote:
Another COOK in the crowd, WELCOME, BROTHER! Bill W.
__________________
"THE ASSISTANT GURU OF STUFF" |
|
|
|
Sponsored Links (Register now to hide all advertisements) |
|