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Old 05-03-2012, 11:37 AM   #1
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Default Retard timing

What type of spark plug do I need to run to retard spark timing?
I'm running BKR6EGP platnium spark plugs
I would like to try retarding timing in the rear most cylinder #4
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Old 05-03-2012, 11:38 AM   #2
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what?!?!?!?!?!?!?!? Hyper?
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Old 05-03-2012, 12:01 PM   #3
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The free electron density of the metal used in the spark plug could have an effect on the speed of electrical conduction but probably not significant enough to effectively retard timing?

http://en.wikipedia.org/wiki/Free_electron_model
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Old 05-03-2012, 02:55 PM   #4
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This thread is confusing me. Why?
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Old 05-03-2012, 05:42 PM   #5
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To properly retard timing, you need a retarded plug. Something like a Pulstar. A Bosch+4 would do in a pinch.
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Old 05-03-2012, 05:55 PM   #6
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Old 05-03-2012, 06:14 PM   #7
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Maybe get a really long plug wire, or tie it in a knot. That should make it slower. Like short bus slower.
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Old 05-03-2012, 06:16 PM   #8
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Quote:
Originally Posted by hornetball View Post
To properly retard timing, you need a retarded plug. Something like a Pulstar. A Bosch+4 would do in a pinch.
I was wondering if any of the ones in the following link would be retarded enough?

http://www.gaijinriders.com/showthre...k-Plug-Reading
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Old 05-03-2012, 06:36 PM   #9
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simple! stock type, but you'll need to drill new spark plug holes under the exhaust ports.
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Old 05-03-2012, 06:42 PM   #10
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Quote:
Originally Posted by fooger03 View Post
This thread is confusing me. Why?
Because it is retarded.
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Old 05-03-2012, 07:07 PM   #11
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What just happened here I don't even
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Old 05-03-2012, 07:30 PM   #12
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Quote:
Originally Posted by Braineack View Post
what?!?!?!?!?!?!?!? Hyper?
Nope. This is real.

A plug with a tip that extends further into combustion chamber will have advanced timing.

Recessed plug like ngk race plug will burn all the fuel a little later.
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Old 05-04-2012, 03:59 AM   #13
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Quote:
Originally Posted by Faeflora View Post
Nope. This is real.

A plug with a tip that extends further into combustion chamber will have advanced timing.

Recessed plug like ngk race plug will burn all the fuel a little later.
I guess Faeflora is correct. In this case it might be possible to achieve the same results with standard plugs with a slight modification.

(I am searching for the formula for the relationship of retard vs copper washer count.)
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Old 05-04-2012, 04:20 AM   #14
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yah you're pretty much fukked

remember that the combustion chamber duration is variable depending on RPM. That means that the effective retard is greater at lower RPM and less at higher RPM. that = suck a dik

as for OP.

No. Not gonna happen. Sorry. Tuning your motor like that will lead to fail. It is better to address your fueling and timing and airflow vs. combustion timing. Keep in mind that a big old kleenex box will, in boost, provide pretty darn equal airflow to all cylinders. boner
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Old 05-04-2012, 10:32 AM   #15
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OP, I think I've figured out how to do it.

First, you'll need a capacitor installed inline with your spark plug wire. You'll need a capacitor of the "flux" variety - I'm sure you've heard of them - probably going to be tricky to find, but keep looking.

Once you've got the capacitor installed on your spark plug wire, you're going to have to run a signal wire to the ECU, and run a 2D map at 5v PWM using RPM as your trigger. You'll also need to install a servo at the capacitor to adjust timing. The reason for all this crap is that you'll need to vary the time of the capacitor based on RPM.

When you've got everything hooked up right, here's how it will work: The coil will fire at what the ECU thinks is "correct timing". Spark will travel down the wire where it will meet the capacitor. The capacitor will take the information which it receives from the servo, (remember, servo gets it's information off of 2D map of RPM,) and it will literally send the spark event a few milliseconds into the future. Since the spark won't be "collected and re-discharged", you will still have the full power provided by the coil-pack, it your spark plug will simply see the spark a few milliseconds (or tenths of milliseconds, if you like) later.

Dr. Emmett Brown, eat your heart out.
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Old 05-04-2012, 10:43 AM   #16
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I'm 99.9999% positive the answer lies somewhere with zipties.
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Old 05-05-2012, 01:30 AM   #17
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Seriously, this is only proven to get you 88 mph, and then who knows what will happen

Quote:
Originally Posted by fooger03 View Post
OP, I think I've figured out how to do it.

First, you'll need a capacitor installed inline with your spark plug wire. You'll need a capacitor of the "flux" variety - I'm sure you've heard of them - probably going to be tricky to find, but keep looking.
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Old 05-05-2012, 01:59 AM   #18
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Its simple: do a spark plug re-route.
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Old 05-05-2012, 02:52 AM   #19
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i can tell that you bitches hate when i am rightqq
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Old 05-05-2012, 05:01 AM   #20
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After crunching paschen numbers the initial results looked promising. I soon realized that this approach could never be more than a partial retard solution as the threads of the plug would no longer engage with more than 20 washers.

Quote:
Originally Posted by sturovo View Post

(I am searching for the formula for the relationship of retard vs copper washer count.)

Discouraged but not for long!
Quote:
Originally Posted by 18psi View Post
Its simple: do a spark plug re-route.
This is a brilliant and inspiring solution!

It is now possible to achieve full retard with careful modulation of the 5th injector and spark plug.
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