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here is a loaded question... What spark plugs should i use???

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here is a loaded question... What spark plugs should i use??? Empty here is a loaded question... What spark plugs should i use???

Post  racinghabbit March 21st 2012, 12:16 pm

mud race engine.. 545, iron headed, c9ve. fully ported , full roller , msd ignition. 14.1 :1 compression.. dual plane intake with 1050 dominator...

just wondering what you would suggest for spark plugs..
thanks
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Post  Barney March 21st 2012, 12:24 pm

AUTOLITE 45 or 124
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Post  Lem Evans March 21st 2012, 12:39 pm

Autolite AR33 should work well.

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Post  Barney March 21st 2012, 3:14 pm

I've used all 3 the AR33 is perfectly good too. The 45 and 124 are 1/2 the cost and I've found last a little longer. Just my experience, not disagreeing.
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Post  yellowhorse7 March 21st 2012, 6:17 pm

Barney wrote:I've used all 3 the AR33 is perfectly good too. The 45 and 124 are 1/2 the cost and I've found last a little longer. Just my experience, not disagreeing.


Buy the adapters and run a AR3932
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Post  Lem Evans March 21st 2012, 7:31 pm

The adapters like Garrett machine offers are an option, but are not needed unless one needs a plug colder than the AR32. Unless Racinghabbit gets rid of the dual plane intake manifold and puts the hose to it i'd doubt his engine wants an AR3932 sparkplug.

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Post  cool40 March 21st 2012, 10:15 pm

he could put some m5 in it and go with ngk9's! Razz
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Post  kjett March 22nd 2012, 7:54 am

For some reason, it's difficult to find the AR33's around me, so I went with the Garret machine adapters and run the NGK's. Not that they are any better, just easier for me to get local. I like the NGK BR9es on the frosty jug Twisted Evil
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Post  yellowhorse7 March 22nd 2012, 9:01 am

Lem Evans wrote:The adapters like Garrett machine offers are an option, but are not needed unless one needs a plug colder than the AR32. Unless Racinghabbit gets rid of the dual plane intake manifold and puts the hose to it i'd doubt his engine wants an AR3932 sparkplug.

Good point. I assumed that he was spraying it
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Post  k.pascoe March 22nd 2012, 10:32 am

Motorcraft BTF-1 Best racing 18mm plug.

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Post  racinghabbit March 22nd 2012, 11:31 am

not spraying it... ar33 are made by who?
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Post  racinghabbit March 22nd 2012, 11:31 am

never mind its an autolite racing plug
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Post  racinghabbit March 22nd 2012, 11:41 am

what kind of plug gap do you guys run??
thanks
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Post  racinghabbit March 27th 2012, 12:12 pm

Gap?
I have ar33 .. got them from carquest .. got me 16 overnite!!
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Post  lghting94 March 27th 2012, 12:45 pm

I would guess between .030 and .035
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Post  yellowhorse7 March 27th 2012, 1:31 pm

Biggest gap you can without putting out the spark. With your deal I'd start at .040
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Post  crittersf1 March 28th 2012, 10:15 pm

I run NGK's at .044
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Post  racinghabbit June 1st 2012, 2:45 pm

I called autolite and talked to there racing tech. He told me Not to gap ar32 or ar33 spark plugs. and he also told me to run ar32 's with my engine build..
Just passing it on .

ar33 factory gap is .030



p.s. i did gap a set of ar33 to .040 and i am having problems with them fouling out.. Just an fyi...
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