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AU spark plugs into EA bosch 

 

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 Post subject: AU spark plugs into EA bosch
Posted: Mon Dec 03, 2012 8:07 pm 
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hey all ,

Used to own a EF with an AU motor in it now ive got a set of AU s2/3 spark plugs left over since the EF crashed

can i use then AU plugs into my EA?

the Bosch book shows different part numbers i dunno why though
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 Post subject: Re: AU spark plugs into EA bosch
Posted: Mon Dec 03, 2012 9:53 pm 
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yea they will fit.. if they are au2 or 3 listed plugs the difference is in the gap..
ea-au1 plugs have a 1.1mm gap, au2 and 3 have a 1.3 gap..

otherwise they will fit and work fine just re gap them to 1.1
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 Post subject: Re: AU spark plugs into EA bosch
Posted: Mon Dec 03, 2012 9:53 pm 
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Nice thought so great to know its just a gap
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 Post subject: Re: AU spark plugs into EA bosch
Posted: Tue Dec 04, 2012 12:16 pm 
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The reach of the electrode is completely different...XF, EA plugs are very long.
this is an EA plug....NGK BRE527Y-11
http://i16.ebayimg.com/05/i/000/88/30/5cef_2.JPG

this is an EF,EL,AU plug....NGK BPR5EY-11
http://shop.advanceautoparts.com/wcssto ... i_larg.jpg

 

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 Post subject: Re: AU spark plugs into EA bosch
Posted: Tue Dec 04, 2012 12:17 pm 
Getting Side Ways
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cjh wrote:
The reach of the electrode is completely different...XF, EA plugs are very long.
this is an EA plug....NGK BRE527Y-11
http://i16.ebayimg.com/05/i/000/88/30/5cef_2.JPG

this is an EF,EL,AU plug....NGK BPR5EY-11
http://shop.advanceautoparts.com/wcssto ... i_larg.jpg


Hmm strange i can see what you mean

on ebay motor craft spark plugs are suited for EA-AU though
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 Post subject: Re: AU spark plugs into EA bosch
Posted: Tue Dec 04, 2012 1:18 pm 
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EF_wanabe wrote:
cjh wrote:
The reach of the electrode is completely different...XF, EA plugs are very long.
this is an EA plug....NGK BRE527Y-11
http://i16.ebayimg.com/05/i/000/88/30/5cef_2.JPG

this is an EF,EL,AU plug....NGK BPR5EY-11
http://shop.advanceautoparts.com/wcssto ... i_larg.jpg


Hmm strange i can see what you mean

on ebay motor craft spark plugs are suited for EA-AU though


it dont matter, either way they will still work, i got ngk bp6ey in my au.
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 Post subject: Re: AU spark plugs into EA bosch
Posted: Wed Dec 05, 2012 1:27 pm 
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I'm only pointing it out due to the difference in the combustion chambers of the heads....EA's having a Swirl Ridge, and the EF/EL not having one.
Remember it was an Engineer that spec'd those plugs....and on a dyno, you would see a difference.

 

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 Post subject: Re: AU spark plugs into EA bosch
Posted: Wed Dec 05, 2012 1:41 pm 
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The projected tip of the EA plug is basically the "secret" behind the JMM plugs. The story goes that they were sent the wrong plugs by accident, but they made an extra 3-4 kw (tested on an EF). These projected-tip "wrong" plugs are the Autolite 985s that JMM sell for more than twice the price of anywhere else. I can't confirm the accuracy of their power gain claims, but I have been using them for years in my EF and AU2 with no problems (even with the thinner MLS head gasket and .015" shaved head in the EF). It looks like the NGK BRE527Y is very similar, though not sure about the heat range.

 

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 Post subject: Re: AU spark plugs into EA bosch
Posted: Wed Dec 05, 2012 1:44 pm 
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Should be all the same its only a falcon after all but im going to other way around AU plugs into EA but ehh whatever fits
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