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| mystro |
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el i6 and i6ho ford recomendeds 1 to 1.1mm gap
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| WagonDad |
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XH5LWEPN wrote: Anyone ever experimented with spark plug indexing?
Any noticeable gains in fuel economy, smoother running etc? I have idexed the plugs on my EF using copper washers, cant say I have noticed any improvement but every little bit helps.
_________________ 4.0L EF Fairmont Station Wagon. EL GT Snorkel. K&N Pod in air box. 3" Intake piping.
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| badcooky |
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Grimketel yep that as well in most chambers the flame front is more eficatious.
Indexing works but it's a pain to get to in the BA,so i haven't.
_________________ BA XL ute. |
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
badcooky wrote: Grimketel yep that as well in most chambers the flame front is more eficatious.
Indexing works but it's a pain to get to in the BA,so i haven't. the is already in the center of the chamber in a BA engine. it wouldn't be worth half a horse power |
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| relaxed_diplomacy |
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Does anyone know why ford went to shorter plugs after the ED? There seems to have been a suggestion in this thread to use earlier model plugs in the later models, but why did ford change? They seem to have gone all out to reduce pinging, with 10deg less advance, shorter plugs and a knock sensor. Did they really increase the compression ratio that much?
_________________ wrecking 9/97 EL fairmont sedan burgundy 6cyl auto 270k modBAintake |
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
relaxed_diplomacy wrote: Does anyone know why ford went to shorter plugs after the ED? There seems to have been a suggestion in this thread to use earlier model plugs in the later models, but why did ford change? They seem to have gone all out to reduce pinging, with 10deg less advance, shorter plugs and a knock sensor. Did they really increase the compression ratio that much?
from 8.8:1 to 9.3:1 |
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| travs ea-xr6 |
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i want to try new plugs in my ea 3.9 mpi engine,i was thinking can i use el,ef xr6 plugs or ed xr6 plugs wich ones best to go for, and im running a bbm on this engine.cheers
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| EL__Fairmont |
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travs ea-xr6 wrote: i want to try new plugs in my ea 3.9 mpi engine,i was thinking can i use el,ef xr6 plugs or ed xr6 plugs wich ones best to go for, and im running a bbm on this engine.cheers
Better of sticking with the longer projected plugs for EA/ED heads. No point installing smaller projected plugs found on EF/ELs. I posted a pic on pg2 too show the difference between the 2 types of plugs. Cheers...
_________________ 97 EL Fairmont 4l OHC .Silver. |
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
travs ea-xr6 wrote: i want to try new plugs in my ea 3.9 mpi engine,i was thinking can i use el,ef xr6 plugs or ed xr6 plugs wich ones best to go for, and im running a bbm on this engine.cheers
i take it the rest of your ignition system is %100 new and in perfect order with a good voltage at the coil +. if not, you're wasting your time playing with plugs. |
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| travs ea-xr6 |
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ok what about going for the autolite 985 plug,or is the ed xr6 plug different and may improve performence.cheers
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
travs ea-xr6 wrote: ok what about going for the autolite 985 plug,or is the ed xr6 plug different and may improve performence.cheers
refer my above post. |
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| relaxed_diplomacy |
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tickford_6 wrote: relaxed_diplomacy wrote: Does anyone know why ford went to shorter plugs after the ED? There seems to have been a suggestion in this thread to use earlier model plugs in the later models, but why did ford change? They seem to have gone all out to reduce pinging, with 10deg less advance, shorter plugs and a knock sensor. Did they really increase the compression ratio that much? from 8.8:1 to 9.3:1 Okay, that is a big jump. However, i wonder whether ford used shorter plugs to try to reduce knocking, or for some other reason, such as piston clearance?
_________________ wrecking 9/97 EL fairmont sedan burgundy 6cyl auto 270k modBAintake |
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| relaxed_diplomacy |
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Would using an MSD blaster ss coil and a larger gap mean that LPG would burn quicker, and therefore less advance would be needed, and therefore the car would run better as a dual fuel?
_________________ wrecking 9/97 EL fairmont sedan burgundy 6cyl auto 270k modBAintake |
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| tickford_6 |
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Posts: 6449 Joined: 11th Nov 2004 |
relaxed_diplomacy wrote: Would using an MSD blaster ss coil and a larger gap mean that LPG would burn quicker, and therefore less advance would be needed, and therefore the car would run better as a dual fuel?
I'm not an expert on LPG, increasing burn rate i won't comment on. But, using a higher output coil and a larger gap will be beneficial. |
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| skidder |
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Spark plugs don't directly change the burn rate, however their positioning affects the geometry of flame propogation which affects the mass burning rate (ie the amount of mixture burning at once, but not the actual speed at which the flame travels).
_________________ EVL098 wrote: Cramping in the hand from having it on your Wang for an excessive period of time is a definate con. Seriously do people google "f**k up modifications for Fords owned by Jews" and get linked straight to this site nowadays? AU,factory fitted tickford kit/IRS, t5,Sports ryder/KYB: gone. |
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