Spark plugs for Zex kit?

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Smokeurhonda

New Member

May 1, 2003

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Maryland

Dec 14, 2006

#1

• Dec 14, 2006

• #1

Alrighty then. I just ordered the Zex wet kit 75-125 shot. I plan on running the 75 shot untuned for the time being. I will then step up to the 125 when I get the car on the dyno. Questions are, do I need to run a colder plug, or will stock heat range do. Also I have a predator on the car. Slightly leaned and maxed timing. Will this remain ok? should i go to stock predator settings? Or pull timing even more? HELP PLEASE.

 

steveb24

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Nov 28, 2005

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wilmington, DE

Dec 14, 2006

#2

• Dec 14, 2006

• #2

use the stock settings untill the dyno tune. zex sells their own plugs, which are a step colder, or you could buy some ngk tr6's for $1.77 a piece at napa.

 

the98stang

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Aug 12, 2005

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Dec 14, 2006

#3

• Dec 14, 2006

• #3

NGK Tr-6's will be your best bet. Or autolite 103's...

 

S

Smokeurhonda

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Dec 14, 2006

#4

• Dec 14, 2006

• #4

steveb24 said:

use the stock settings untill the dyno tune. zex sells their own plugs, which are a step colder, or you could buy some ngk tr6's for $1.77 a piece at napa.

Click to expand...

Stock predator tune? or factory tune?

 

R

Red2000GT

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Sep 10, 2000

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Dec 14, 2006

#5

• Dec 14, 2006

• #5

Factory tune OR back the timing down to about -10% and the fuel a couple percent richer. You could leave the fuel alone as most "street" nitrous systems err on the side of caution and run fairly rich. I have the Predator as well and i only adjust the timing,not the fuel,with the predator tune.

 

the98stang

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Aug 12, 2005

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Dec 14, 2006

#6

• Dec 14, 2006

• #6

Smokeurhonda said:

Stock predator tune? or factory tune?

Click to expand...

General rule of thumb is to pull 2 degrees of timing for every 50 shot. I would pull at least 2 degrees for a 75 shot. Don't spray 75 until you get it on the dyno! Or your just asking for trouble...

 

Pughman

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Dec 25, 2004

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in a galaxy far far away"MISSOURI"

Dec 14, 2006

#7

• Dec 14, 2006

• #7

1 Step colder NGK TR 6 plugs And gap at .035 is what i run on my 75 zex shot, ran 1 bottle now with no problems... stock tune.

 

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Smokeurhonda

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Dec 15, 2006

#8

• Dec 15, 2006

• #8

Thanks for the help guys. Ok, from my understanding the predator displays timing and A/F is a percentage right? So what is stock timing. 10 degrees? if so then backing off ten percent would be pulling one degree. Also doesn't the predator tune bump timing a little?

 

Gearbanger 101

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Dec 15, 2006

#9

• Dec 15, 2006

• #9

the98stang said:

NGK Tr-6's will be your best bet. Or autolite 103's...

Click to expand...

....or some Motorcraft AGSF 22C's (1 step colder) or AGSF 12C's (2 steps colder)