0-60 mph: 7.1 seconds. Reply #45 – March 08, 2007, 12:44:08 PM Looks like a hot spot from the picture, is it bubbled up?......You DID upgrade your pump, correct? If you're using the stock SO pump you may run into fuel starvation issues...... Quote Selected
0-60 mph: 7.1 seconds. Reply #46 – March 08, 2007, 01:50:53 PM first of all howd you get your sn changed? and why "V8Demon"? this is gonna be tough to get used to! lol second--on the porcelain? yeah it seems like its a buildup of material, it doesnt line up with where the edge of the insulator should be. ill see if i can get a better picture. gotta find by bro's digicam its newer and better. no i didnt change the fuel pump. again on coolcats' h.o. site it says the stock pump is barely enough to handle the new injectors but again barely. so i should change the pump then? what do i have to get? just look for "mustang fuel pump" on ebay? or is there a model number or flow rate number i should look for? other than undoing the straps and dropping the tank is it a difficult job? Quote Selected
0-60 mph: 7.1 seconds. Reply #47 – March 08, 2007, 03:12:14 PM Well so far, I have had no issues with my stock fuel pump keeping up with the more fuel hungry HO, but I'm guessing that could change from car to car. The fuel pump was something that I initially thought would cause your car's lean condition, but I assumed you had already tried a new one since its one of the tips right on the site (yeah, I'm stupid). So yes, that is definitely a possiblity. Quote Selected
0-60 mph: 7.1 seconds. Reply #48 – March 08, 2007, 03:57:01 PM Quotefirst of all howd you get your sn changed?Ancient Chinese Secret! Quoteand why "V8Demon"? The cougar's always been dubbed "Black Demon" and I'm a V8 kinda guy.... I put 'em together.Quoteno i didnt change the fuel pump. again on coolcats' h.o. site it says the stock pump is barely enough to handle the new injectors but again barelyUsing 6.5 pounds = 1 gallon of gas........(it's a close enough estimate, some fuels are more some less)If an HO injector flows 19 pounds an hour than it flows about 2.92 gallons an hour X8 injectors = 23.38 gallons per hour.1 gallon = 3.8 liter. The stock SO pump flows about 60-65 LPH. Lets be optimistic and say 65. So 65 divided by 3.8 = 17 gallons per hour flow.This being said your pump SHOULD be changed. 14 pound injectors and a 65 LPH pump have been proven to support an HO motor with no horsepower loss on the dyno, but there is no safety margin.....I can see bigger injectors with not enough pump causing issues during open loop operation -- especially if a car will not go into closed loop for some reason. In open loop the HEGO is bypassed for stored fuel/air ratios in the ecu accross the RPM range. EEC-IV controls fuel metering to a cylinder by opening/closing the fuel injector at certain intervals. In other words it won't measure the amount of gas going into the cylider at open loop. It will rely on the programming stored which is fine for stock applications, but with a pump designed to pump less fuel in a given amount of time, less gasoline than the desired amount enters the combustion chamber. bigger injectors + not enough pump + open loop = not enough gas in the combustion chamber = problems at high RPMRemember also: The numbers I used assume the injectors and pump are flowing as advertised too. An older pump with wear and tear on the impeller blades may have a significant drop in flow rate as well.Oh, and check your fuel pressure with the vacuum line disconnected from the regulator. It should be around 40 PSI @idle with the line disconnected.And lastly, What gap are the plugs set at? Quote Selected
0-60 mph: 7.1 seconds. Reply #49 – March 08, 2007, 04:45:14 PM just checked fuel press. again without regulator hooked up--42 psi. plug gap? no idea. lol whatever the stock spec is! we had a friend of my uncle whos REALLY into everything ford do a tune up when i first started driving the car, had severe starting problems after sitting for awhile after a rainstorm ended. so he put in the current spark plugs. thus theyve got about 6k miles on them. ill go check the gap now, i just wanted to put the press. results up. Quote Selected
0-60 mph: 7.1 seconds. Reply #50 – March 08, 2007, 06:15:17 PM You need to check the fuel pressure under load. Free revving doesnt require much fuel, but driving it does. Quote Selected
what a PITA that test was.... Reply #51 – March 08, 2007, 08:47:22 PM i went to advance and got a 3/8" brake line union. i took the hose from my grease gun, and extended my fuel press. gauge line. it BARELY worked. i couldnt close the hood all the way, had to just get that latch thing to catch. it pressed the gauge face against the windshield and was tugging on the fuel rails. i was so pissed, just a tiny bit too short. it seems like that ALWAYS happens to me all the time. so i had to crouch down while driving, and of course its night so i got a little flashlight im shining at it. the 40 psi mark lines up with the "3" in 300 kPa so i look at that. even like 1/2 throttle to 30 mph got it right up there, and i think WOT up to like 40 mph got it just a little past actually. geez if this is whats necessary why the hell dont they make the hose longer???? so what now? Quote Selected
replace plugs with new ones Reply #52 – March 08, 2007, 10:07:07 PM you say the plugs have 6k on then I would put new in with correct gap motorcrafts or autolites,this could be an issue.how are your wires and cap and rotor? if they are older replace them cheap investment Quote Selected
0-60 mph: 7.1 seconds. Reply #53 – March 08, 2007, 10:19:48 PM well the tuneup involved new cap, rotor, wires, the works. originally we just wanted the leaky valve cover gaskets done. but he said he thought all that other stuff should be replaced too. Quote Selected
0-60 mph: 7.1 seconds. Reply #54 – March 08, 2007, 11:43:47 PM Quote from: ZondaC12;133265just checked fuel press. again without regulator hooked up--42 psi. plug gap? no idea. lol whatever the stock spec is! we had a friend of my uncle whos REALLY into everything ford do a tune up when i first started driving the car, had severe starting problems after sitting for awhile after a rainstorm ended. so he put in the current spark plugs. thus theyve got about 6k miles on them. ill go check the gap now, i just wanted to put the press. results up.Ding ding ding! Did you say that you've got the same plugs from the SO? That's your problem. The HO (E7 heads) use different plugs than the SO (E6) head. If they are the plugs from the SO change them to HO plugs! Quote Selected
0-60 mph: 7.1 seconds. Reply #55 – March 09, 2007, 06:59:27 AM oh . is that why theyve been kinda hard to thread!? :flame: :wtf: :eek: :eek: :eek: i thought the threads in the heads were just dirty (although actually they thread fine until i start feeling a grinding so maybe it is dirt). are the threadings even different at all? im just always worried about messing up bolt threads, often irrepairable damage. if someone had told me, i woulda dun it! so...whats the difference anyway? ill go and get those today, but just curious. i like the way you expressed the answer too, "ding ding ding!!!" yay i won the h.o. conversion game show!!! prize? pair of gt40 heads:evilgrin: a man can dream.... Quote Selected
0-60 mph: 7.1 seconds. Reply #56 – March 09, 2007, 08:50:31 AM I think the reach is slightly different between the two....not sure on what else. Quote Selected
0-60 mph: 7.1 seconds. Reply #57 – March 09, 2007, 10:15:04 AM The E-6 plugs go deeper into the head than the E-7 plugs.Thread size is the same. Quote Selected
no difference... Reply #58 – March 09, 2007, 10:50:08 AM yup. changed em just now, tested it, i dont notice anything different. mileage numbers the same, and it doesnt have any more power.oh and another thing i should have asked long ago--how much do you guys' engines shake at idle, 800 rpm? mine shudders just a little bit. if you open the throttle just a little, os it comes up to like 1000 rpm or a little more it stays exactly in one spot though. the only reason i never asked is i *think* its always done that but i figured id just check. Quote Selected
0-60 mph: 7.1 seconds. Reply #59 – March 09, 2007, 08:21:13 PM YEEEEHAAAWWWWWWWWWWWWWW!!!!!!!! i dont really know what did it. the new plugs, the base timing i just bumped to 14 degrees, or both. but i just took it out, tried something new with the gtech--yup--you gotta stop accelerating, preferably brake a little, RIGHT when you see the 0-60 time come up, and it sneaks up on you and you gotta look right at it to be ready. i gotta be honest, i think part of the problem is that i was too demanding. i expected a really big difference seat of the pants. i thought i was really gonna get pushed back into my seat. though tonight i gotta say it was pretty rough, and notable is how long she spun those grippy mean snow tires which i think are a little bit bigger than normal ones. they were spinning for a good 1-2 seconds! whereas a few days ago last time i tested it 0-60 i doubt if they did for a second. every time i do this i always hold the brakes and build the converter right up to ~1800 rpms. so probably with less wheelspin id probably go even faster! ill probably run it again sometime, see what i can get. but i did like hearing em howl! and really where the difference is, i know, high end rpms. i guess because theres not as much gain down low it disappointed me driving around town. but in this test, once it got to like 3k, it was pulling a LOT harder than it did before! that is really amazing. it was a DOG there before. now about the timing. not during this test or driving to get where i did it did i notice ANY pinging. my cousin told me that i would not miss it if it were, that its loud and distinctive enough that even with my loud exhaust id know it. so im leaving it there at 14 deg. unless anyone says i shouldnt! speak now or..........you know the rest. i have never been so happy with this car. i cant wait to tell my friend that its faster as his moms 03 acura 3.2TL to 60 mph!!!! http://www.albeedigital.com/supercoupe/articles/0-60times.html"1999 Acura 3.2TL 7.4 15.7" second number is the 1/4 mile time. there is no hp increase between the 99 and 03 model. coincidentally, both cars make 225 hp!!! THANKS FOR ALL YOUR HELP GUYS! Quote Selected
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