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Author Topic: plugs  (Read 6688 times)

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Offline Shimy87

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plugs
« on: August 10 2014, 10:39:52 PM »
If I ever get a actuator back, and can get it to push 25-26 lbs. What plugs at what gap should I run?
Thanks!!
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Offline Steve Wood

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Re: plugs
« Reply #1 on: August 10 2014, 11:29:53 PM »
Autolite 23 or their racing plug AR-23, Delco R43ts, or NGK ur-5..... All of them at 0.035" .  No need to gap any tighter
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Offline larrym

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plugs
« Reply #2 on: August 11 2014, 01:12:44 AM »
If you want to run a non projected tip the YR5s are the same as UR5   
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Offline Shimy87

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Re: plugs
« Reply #3 on: August 13 2014, 07:09:33 PM »
Figures, I have r42ts. Will be changing them tommorrow :rolleyes;
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Offline Steve Wood

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Re: plugs
« Reply #4 on: August 13 2014, 07:19:19 PM »
They are OK. Just a bit colder
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Offline Forzfed

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Re: plugs
« Reply #5 on: August 15 2014, 02:09:42 PM »
Quote from: Steve Wood on August 10 2014, 11:29:53 PM
Autolite 23 or their racing plug AR-23, Delco R43ts, or NGK ur-5..... All of them at 0.035" .  No need to gap any tighter

Someone said to use the Autolite AR135.  Are those for the aluminum heads?
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Offline Steve Wood

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Re: plugs
« Reply #6 on: August 15 2014, 03:48:05 PM »
Sounds like something for E 85 or maybe it's the latest magic for a problem that does not exist in this case
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Steve Wood

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Offline motorhead

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Re: plugs
« Reply #7 on: August 15 2014, 04:08:34 PM »
NGKs here... I think? It has been a while since I changed them.
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Offline Forzfed

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Re: plugs
« Reply #8 on: August 15 2014, 04:17:14 PM »
Quote from: Steve Wood on August 15 2014, 03:48:05 PM
Sounds like something for E 85 or maybe it's the latest magic for a problem that does not exist in this case

They are a non projection tip.  The AR23 have a projection tip.  Have them in the car, seem all right.
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Offline Steve Wood

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Re: plugs
« Reply #9 on: August 15 2014, 04:41:21 PM »
That's the reason I said for E85. Straight methanol is prone to preignition particularly if too much timing is used or too hot a plug. Straight meth also can require a tight plug gap.  I was thinking the 135 came with a much tighter gap but I must be confusing it with another one. Sounds like a solution for a problem that does not exist on a driver with alky injection
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Offline Forzfed

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Re: plugs
« Reply #10 on: August 15 2014, 06:10:17 PM »
Isn't it better to use a non projected tip with higher boost or nitrous?
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Offline Steve Wood

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Re: plugs
« Reply #11 on: August 15 2014, 06:46:30 PM »
At times, on race cars, but not on a driver. Think,  when has preignition been a problem on any Street buick that you know of? . Not detonation but preignition? far as that goes,  when have you heard about preignition being a problem on any buick race car running gasoline?
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Steve Wood

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Offline Forzfed

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Re: plugs
« Reply #12 on: August 15 2014, 07:01:12 PM »
This is true, Steve.  Maybe I'll have to run crazy amounts of alky! :cheers:
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Offline Steve Wood

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Re: plugs
« Reply #13 on: August 15 2014, 07:48:10 PM »
The only down side I see is that they may foul quicker in street driving. What is the gap?
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Steve Wood

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Offline Forzfed

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Re: plugs
« Reply #14 on: August 16 2014, 04:06:10 PM »
Funny you say that because I think they are on their way out.  I ordered some AR23 last night.  Hopefully that makes a difference.
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