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| turbotrana |
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The more the projection into the cylinder, the better the burn.
There are issues with running this sort of plug in a race motor with continuous operation but on the street or drags there are no issues from my experience. I use a 1.5mm gap with the 985 plugs and it allows me to run a leaner tune at cruise when compared to stock plug and gaps. I agree with JMM claims of a slight power increase. Its all about projection into the cylinder giving the benefit.
_________________ Turbo 6s rule |
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| EL__Fairmont |
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turbotrana wrote: The more the projection into the cylinder, the better the burn.
There are issues with running this sort of plug in a race motor with continuous operation but on the street or drags there are no issues from my experience. I use a 1.5mm gap with the 985 plugs and it allows me to run a leaner tune at cruise when compared to stock plug and gaps. I agree with JMM claims of a slight power increase. Its all about projection into the cylinder giving the benefit. so a set of NGK EA-ED plugs into a EF/EL head should perform better as they project nearly as far as autolites?
_________________ 97 EL Fairmont 4l OHC .Silver. |
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
EL__Fairmont wrote: turbotrana wrote: The more the projection into the cylinder, the better the burn. There are issues with running this sort of plug in a race motor with continuous operation but on the street or drags there are no issues from my experience. I use a 1.5mm gap with the 985 plugs and it allows me to run a leaner tune at cruise when compared to stock plug and gaps. I agree with JMM claims of a slight power increase. Its all about projection into the cylinder giving the benefit. so a set of NGK EA-ED plugs into a EF/EL head should perform better as they project nearly as far as autolites? yeah but the autolites are cheaper if you know were to get them. |
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
turbotrana wrote: The more the projection into the cylinder, the better the burn.
There are issues with running this sort of plug in a race motor with continuous operation but on the street or drags there are no issues from my experience. I use a 1.5mm gap with the 985 plugs and it allows me to run a leaner tune at cruise when compared to stock plug and gaps. I agree with JMM claims of a slight power increase. Its all about projection into the cylinder giving the benefit. i wouldn't want any more then the 985s have got. because you start to go past the mid point and get close to the piston. i think a better way of putting it is the closer to the center of the chamber the better the burn. |
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| EL__Fairmont |
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tickford_6 wrote: EL__Fairmont wrote: turbotrana wrote: The more the projection into the cylinder, the better the burn. There are issues with running this sort of plug in a race motor with continuous operation but on the street or drags there are no issues from my experience. I use a 1.5mm gap with the 985 plugs and it allows me to run a leaner tune at cruise when compared to stock plug and gaps. I agree with JMM claims of a slight power increase. Its all about projection into the cylinder giving the benefit. so a set of NGK EA-ED plugs into a EF/EL head should perform better as they project nearly as far as autolites? yeah but the autolites are cheaper if you know were to get them. where do we get them from tickford_6? MTQ rockhampton?
_________________ 97 EL Fairmont 4l OHC .Silver. |
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
MTQ are the Australian distributor.
you can also get them in platinum and double platinum. obviously these cost more then the regular ones. but if you pay more then $4 each you are being ripped |
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| EL__Fairmont |
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Google search came up with this,
"Projected plugs initiate the flame-front closer to the center of the combustion chamber, which has an effect similar to advancing the timing". Same as you described it "Tickford_6" Looks like The Mock boys are on the money....................
_________________ 97 EL Fairmont 4l OHC .Silver. |
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| KRUPTD |
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That autolite plugs looks very very similar to the J16 denso variant plug that is run in the xf to ed motors,like what was mentioned earlier in this thread.
As for using autolite brand,they are crap dont last long.Bosch and NGK are a far better brand as well as NIPPON DENSO too. This is what i have come across with the autolite plugs they dont like to be flooded and have seen this across alot of makes and models of cars.But if you like hearing that they make you go faster be my guest. As earlier mentioned about the projection of the plug will help a better burn and increase of power.But also heat range will of the plug will need to be changed running a higher projection to prevent plug failure. Another thing race engines i have seen is that all the spark plugs are aligned in a special order/direction this also promotes better combustion at a great time meaning firing at the right spot.For example marking the plug ouside of the plug to observe which way it is facing with the other ones and also having the electrode tip of the plug facing the correct angle at which the spark is greater to create a sufficient burn.
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| mystro |
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quick google of autolite
you can buy app63's from rarespares all 6 for $97 posted |
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| EL__Fairmont |
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KRUPTD wrote: That autolite plugs looks very very similar to the J16 denso variant plug that is run in the xf to ed motors,like what was mentioned earlier in this thread.
As for using autolite brand,they are crap dont last long.Bosch and NGK are a far better brand as well as NIPPON DENSO too. This is what i have come across with the autolite plugs they dont like to be flooded and have seen this across alot of makes and models of cars.But if you like hearing that they make you go faster be my guest. As earlier mentioned about the projection of the plug will help a better burn and increase of power.But also heat range will of the plug will need to be changed running a higher projection to prevent plug failure. Another thing race engines i have seen is that all the spark plugs are aligned in a special order/direction this also promotes better combustion at a great time meaning firing at the right spot.For example marking the plug ouside of the plug to observe which way it is facing with the other ones and also having the electrode tip of the plug facing the correct angle at which the spark is greater to create a sufficient burn. So you think it would make a 4rwkw difference, as mentioned by the Mock boys...??????
_________________ 97 EL Fairmont 4l OHC .Silver. |
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| FLASH |
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KRUPTD wrote: Another thing race engines i have seen is that all the spark plugs are aligned in a special order/direction this also promotes better combustion at a great time meaning firing at the right spot.For example marking the plug ouside of the plug to observe which way it is facing with the other ones and also having the electrode tip of the plug facing the correct angle at which the spark is greater to create a sufficient burn.
Its called indexing.
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| FORDom |
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so would i notice a difference going from the zgr6b-11 plugs, to the bre527y-11 in a 95 tickford motor?
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| ebxr82nv |
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mystro wrote: quick google of autolite
you can buy app63's from rarespares all 6 for $97 posted Bloody hell, I don't even think mock charges that much for them.
_________________ 9/98 AU1 XR6hp-about to retire from the road and be reborn on the race track. |
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| EL__Fairmont |
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pic of plugs. ea-ed(longer projection), ef/el
_________________ 97 EL Fairmont 4l OHC .Silver. Last edited by EL__Fairmont on Sat Jan 03, 2009 8:45 pm, edited 1 time in total. |
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| cjh |
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tickford_6 wrote: a few things to note about the plugs.
the 985 comes with a gap of .9mm which is .2mm smaller then what ford use in it's petrol (non LPG) 6cyl engines. i run the 985 with a gap of 1.3mm and also index them as best can be done with what comes in the box of 6. i've found running a .9mm gap (using any plug) in the AU causes random misfiring at idle an noticeable missing on light acceleration. If you use LPG in an AU, the plug gap for them was 0.9mm, and previous models were 0.8mm. The plug gap for petrol only AU's was 1.3mm.
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