NGK plugs

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race9899
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NGK plugs

#1 Post by race9899 » Wed Jul 11, 2007 1:22 pm

r5671a-8
r5671a-9
r5671a-10

Which is colder which is hotter??

trying to get a customer to switch to NGK's

565 dart 355 heads tunnel Ram dual 1150's 325 horse fogger

Have no clue what plug he is running right now

Should he just use the -9? and then which direction if that is to cold???

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TubbedTruck67
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#2 Post by TubbedTruck67 » Wed Jul 11, 2007 2:53 pm

I think the 10 is the coldest and numericly lower is hotter. I think. 8-)

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79 Camaro
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#3 Post by 79 Camaro » Wed Jul 11, 2007 3:13 pm

Hey Jeff, I have not talk to you in a while :D

On NGK's the higher the number the colder the plug is.
How much compression does this motor have?

Adam Wright
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race9899
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#4 Post by race9899 » Wed Jul 11, 2007 5:22 pm

79 Camaro wrote:Hey Jeff, I have not talk to you in a while :D

On NGK's the higher the number the colder the plug is.
How much compression does this motor have?

Adam Wright
14.5 to 1

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John_Heard
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#5 Post by John_Heard » Wed Jul 11, 2007 6:41 pm

9's would be a good heat range to start with on the 325 shot jeff.

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Mike Peters
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#6 Post by Mike Peters » Thu Jul 12, 2007 6:39 am

Beyond wrote:9's would be a good heat range to start with on the 325 shot jeff.
Hey John, what's the best plug to start with on a $7500 small block and 100 shot? Something from the Sears lawnmower dept.? :lol:
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#7 Post by John_Heard » Thu Jul 12, 2007 7:57 am

100 Shot??? What's up with dat?

If you're serious - I suppose you might be able to do that with 7's same as N/A, you might want to drop down to -8's should you be planning on stepping on up for the next pass.

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Mike Peters
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#8 Post by Mike Peters » Thu Jul 12, 2007 8:02 am

Beyond wrote:100 Shot??? What's up with dat?

If you're serious - I suppose you might be able to do that with 7's same as N/A, you might want to drop down to -8's should you be planning on stepping on up for the next pass.
Just a joke my friend. :lol: 8-) Don't need much of a plug to win the car show trophies anyway. :wink:
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#9 Post by John_Heard » Thu Jul 12, 2007 8:10 am

Speaking of that show car, it is gonna be time to light the wick on that thing here soon. What do you have for a jet inventory?

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Mike Peters
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#10 Post by Mike Peters » Thu Jul 12, 2007 8:18 am

Beyond wrote:Speaking of that show car, it is gonna be time to light the wick on that thing here soon. What do you have for a jet inventory?
I've got 26's to 40's but always willing to upgrade. You fond of 2 jet spreads or start off with a 1 spread? I don't have 34's in the jet box so, I'm assuming they're in the engine right now. I'll check inventory and let you know what I've actually got.
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#11 Post by John_Heard » Thu Jul 12, 2007 8:37 am

Jet spread depends on what fuel pressures you're wanting to work with, personally I prefer higher pressures which in most cases requires more spread on the jets. Higher fuel pressure = more room for error due to fuel pressure fluctuations.

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