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28-03-2008, 04:12 PM
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Flairs - Truckers Delight
Join Date: Aug 2006
Location: Brisbane Northside Likes: Opposite Lock
Posts: 5,731
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Hi All
I have a 6/2000 AUII with Factory Dual Fuel. I don't know which type of spark plugs to buy. The NGK website tells me that BPR6EY's are the go, which are 0.8mm plugs whereas the petrol equivalent is listed as the BPR5EY-11s which are 1.1mm gap. What is the difference, and which one is right?
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Current: Silhouette Black 2007 SY Ford Territory TX RWD 7-seater "Black Banger"
2006-2016: Regency Red 2000 AUII Ford Falcon Forte Automatic Sedan Tickford LPG "Millennium Falcon" |
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28-03-2008, 05:41 PM
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FF.Com.Au Hardcore
Join Date: Sep 2007
Location: Scarness, Hervey Bay.
Posts: 830
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I used NGK ZGR6B11 in my AU3 Forte on LPG. This plug was reccomended by Torquegas. I'm rather happy with them. Much better than the Ford supplied Iridium plugs that were in last time.
These ZGR6B11 are only $2.75ea at my local CarBitz. Matt. |
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28-03-2008, 08:25 PM
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FF.Com.Au Hardcore
Join Date: May 2006
Location: Perth, South
Posts: 3,064
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normally ngk petrol plugs, you can gap them down if you want, i have standard ones in mine at 1.1mm gap and haven't had any issues with backfires, etc
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28-03-2008, 09:22 PM
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#4 | ||
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Sales Representative
Join Date: Mar 2007
Location: Young
Posts: 5,314
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I was told that the Dual Fuel runs better with the shorted gapping, also found in the XR6... which is what i ended up using anyway... :P
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Project InfernoSR - Back Burner Project FeralTerra - No longer Project Fairmont Prodigy - Sold Thanks go to: MY WIFE! Bathurst Brakepro Undacar eBay!! |
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28-03-2008, 10:59 PM
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#5 | ||
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Donating Member
 Join Date: Dec 2006
Posts: 5,549
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I have used both the BPR6EY and the ZGR6B11 in my taxis, wasn't looking for high performance or anything just no backfiring
Found no real difference between them, if I recall they changed the recomended plug halfway through the AU range but both worked The "5" and "6" in the number is the heat range with the 6 being a cooler plug recommended for gas I always used .8mm gap as well, whatever plug type |
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29-03-2008, 07:41 AM
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#6 | ||
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Walking with God
Join Date: Mar 2005
Location: Melbourne
Posts: 7,321
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My gas guy always uses the normal recommended petrol plug gapped to 0.8-9.I tried gas plugs myself but they made the car run like a dog. I've used the stock plugs (non-iridium) since.GK
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2009 Mondeo Zetec TDCi - Moondust Silver 2015 Kia Sorento Platinum - Snow White Pearl 2001 Ducati Monster 900Sie - Red Now gone! 1999 AU1 Futura Wagon - Sparkling Burgundy On LPG Want a Full Life? John 10:10 |
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28-03-2008, 10:49 PM
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#7 | ||
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FF.Com.Au Hardcore
Join Date: May 2006
Location: Perth, South
Posts: 3,064
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apparently the petrol plugs perform better than the recommended lpg plugs, so i'd just get them and gap them down to 0.8 if it concerns you
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28-03-2008, 10:53 PM
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#8 | ||
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Flairs - Truckers Delight
Join Date: Aug 2006
Location: Brisbane Northside Likes: Opposite Lock
Posts: 5,731
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okay, sounds interesting
seems i currently have Denso .8s that are recommended by denso for AU1 LPG motors... but not AUII. I don't see that there's any difference between one AU silvertop and another, is there?
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Current: Silhouette Black 2007 SY Ford Territory TX RWD 7-seater "Black Banger"
2006-2016: Regency Red 2000 AUII Ford Falcon Forte Automatic Sedan Tickford LPG "Millennium Falcon" |
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29-03-2008, 06:39 PM
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#9 | ||
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Boost Addict
Join Date: Jan 2005
Location: North Brisbane
Posts: 1,151
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little sticker on underside of bonnet recommends plug gap, which IIRC is 1.1 for petrol.
gapping down from factory specs is only done, when ignition issues arise under high boost application. most NA cars run 1.1 to 1.5 gap, most turboed cars run 0.8 to 0.9 gap (as a rule of thumb, but check factory specs) simply gapping down a plug does not neccesarily mean better power or economy, in many cases it does quite the opposite. a smaller gap produces a smaller spark, which in turn then cause not fully burnt air fuel mixture, hence shitty economy and power.
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N12 Pulsar - sold Gen1 Liberty Turbo - sold VP Commodore Turbo - sold LN65 Hilux Turbo - sold EL31 Corolla Turbo - sold Ford AU Ute Turbo - sold Ford AU XR8 Sedan - 5.4l V8 Turbo (in the build) Ford BA XR6T Ute - daily driver Ford FG XR6T Sedan - cruiser do you see a general trend? I DO  Can't live with it, can't live without it! |
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29-03-2008, 06:51 PM
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#10 | ||
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FF.Com.Au Hardcore
Join Date: Aug 2006
Location: Perth, Western Australia
Posts: 2,296
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Dedicated LPG engines should be running spark plugs with a smaller electrode gap (< 1.0mm) and one heat range colder than petrol plugs.
Regards, Dave
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PoweredByCNG: Sick and tired of all the ignorant 'gas is crap' comments out there. |
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01-04-2008, 09:39 AM
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#11 | ||
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Moderator
 
Join Date: Feb 2005
Location: Kenthurst
Posts: 40,403
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I tossed my Iridiums (too expensive) ... and went with standard NGK's gapped down to 0.8mm
Much cheaper ... works a treat ... so far I have managed just over 20,000km without a hiccup yet ... so looking good for my dedicated LPG ute.
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The Current Stable 2016 SZII TS Territory RWD Petrol The Evolution of the EGA54D utes AU Workshop Build thread of EGA54D B-Series Workshop Build thread of EGA54D 2004 SX TX Territory AWD - Gone but not forgotten 2010 FG XT "The ex-rental" - Moved onto a new home Mechan1k's Flickr Page |
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01-04-2008, 01:20 PM
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#12 | ||
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Critical Thinker
Join Date: Jan 2005
Location: Adelaide
Posts: 20,387
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I havent come across having to replace spark plugs yet, but when I do I'll make sure I get correctly gapped ones to suit dual fuel.
Is there a plus that suit dual fuel applications rather than just one or the other?
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"the greatest trick the devil pulled, is convincing the world he doesn't exist" 2022 Mazda CX5 GTSP Turbo 2018 Hyundai Santa Fe Highlander 1967 XR FALCON 500 Cars previously owned: 2021 Subaru Outback Sport 2018 Subaru XV-S 2012 Subaru Forester X 2007 Subaru Liberty GT 2001 AU2 75th Anniversary Futura 2001 Subaru GX wagon 1991 EB XR8 1977 XC Fairmont 1990 EA S Pak 1984 XE S Pak 1982 ZJ Fairlane 1983 XE Fairmont 1989 EA Falcon 1984 Datsun Bluebird Wagon 1975 Honda Civic |
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Which Spark Plugs
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