[91cobra5.0]

not trying to insult you but is the ditributor tightend down?

[fogged306]

What do you want out of the car? Street car, Strip car? Both? It really all depends on the direction that you want to take the car in as to the mods that can be suggested. First I would find out what size injectors the MAF is calibrated to.

How positive are you that you have stock e7 heads? granted, like you said, it probably has a lot to do with your gear, but a 7.2 is moving pretty good in the 1/8th. Were you out of gear at the end of the track? sounds like it with a 118 trap.

As far as the timing jumping around, I'm no expert there. Was it jumping around at idle or as the RPM's went up?

[93hatch]

Originally Posted by lone5oh not sure how it converts over to 1/4 all we have here is 1/8 and it seems slow to me its going 7.256 at 118mph with overall 1.53-1.58 60 foot times, im sure thats mostly because of the gears, it just dont act right. had someone tell me my puter may be the reason my timing is jumping all over. im used to 50s-60s-70s cars with no injection or computer, and never had the timing jump all over on them so that is my concern. matt

i would bet my car title your not trapping 118 in the fucking 1/8

[trueblue01]

Pulled one of my slips that had a 7.269 1/8 (closest I could find) and the mph was 95.90 and the 1/4 mph was 119.7. Maybe he just typoed

[1slo5.0]

Originally Posted by lone5oh first off i pulled the spout, it moves all over at 15degrees with it out, and is all over 20 degrees with it in, it just moves around. machine shop did the port job, just opened them up a lil over gasket matching, smoothed the radiuses on the heads, i did the porting on the intake bout same way. im new to mustangs not cars, been building customs, hot rods, muscle and drag cars for over 20 years. so my question is a mustang duhh question not a car duhh question. when i got the car the 80mm maf was on it, and the question bout why i need a bigger tb and injectors is it runs reallllll lean top end like not getting enough fuel, running 44pds of fuel pressure. the 80mm maf and the 60mm tb dont work real well together, the intake is a explorer intake. cobra runs 24# injectors so i was trying to go that way. im not ignorant by any means but very novice with the tweaking of 5.0's just trying to things right with what i have. matt

Just because a machine shop did the porting doesn't mean it is doing you any good. Anybody can make a nice shiny port that makes a customer happy but it takes alot of skill and experience to make horsepower out of that same port. Anyway.... Why do you say the 80mm mass air and the 60mm throttle body don't work together. They work fine together as long as everything is in good shape. How do you know the car is running real lean? What fuel pump is in it? 24lb injectors aren't going to do anything for you unless your current injectors are dirty or clogged. Stock injectors will support about 300hp at the stock fuel pressure. The combination you have is under 300hp.

[1slo5.0]

Originally Posted by lone5oh not sure how it converts over to 1/4 all we have here is 1/8 and it seems slow to me its going 7.256 at 118mph with overall 1.53-1.58 60 foot times, im sure thats mostly because of the gears, it just dont act right. had someone tell me my puter may be the reason my timing is jumping all over. im used to 50s-60s-70s cars with no injection or computer, and never had the timing jump all over on them so that is my concern. matt

There is no way the combination you listed ran 7.256 in the 1/8 and definitely not 118mph. 7.25 in the 1/8 is about 11.3 in the 1/4. That combination does not make the power required to go that fast. Just for comparison purposes, on a 9.3 1/4 mile pass in my car it goes 115mph in the 1/8. 118 mph in the 1/8 would put you around 145mph in the 1/4.

[lone5oh]

my neighbor with a 93 cobra is running 7.1 at 100.2 something, to be honest with the other cars ive had, that seems slow. my speed is off a lil its like 90 something, but yeah is 7.2 that isnt a big thing to me, that is the fastest, its mainly like 7.38/7.4 like i said im used to big motor, carbed alot faster in 1/8. i said that to tell you how funky its running not to start anything. i dont know any of you so got no reaso to bs you im trying to make best out of what i have. i dont know how to tell if maf is calibrated for anything. i to be honest think he just bought the biggest one he saw. im wanting a toy out of it, dont need daily driver car, weekend at track here weekend at track there. night terror with friends. i thought the maf and tb had to be simular in size to work correctly. the reason i say are lean is the plugs showing leannnnnnn. so i went ok 19# injectors too small. yes the distributor is tightened down. and it moves just a lil with the plug out but alot with the spout out. someone told me to try it at a high rpm and see if it stabilizes, gonna try that in a min or two and he said to set it at 36 degrees total. hes a guy online that drag races only mustangs, and said for what is in the car, 7.2/7.4 is slow. im not out to get a specific time or beat anyone just dont feel fast enough. im just trying to tell everyone what i got and what its doing and what i should do to make it all work together. i couldnt tell you exactly what heads or on it, and yes ported out does not mean ported out right. been customizing cars and drag racing for long time, to know the mechanic duhhhhhh stuff and to be honest im damn good at what i do, but just dont know stangs and honest enough to admit it. if the numbers dont sound right to you, ok, but telling me it cant happen isnt gonna make me change what im telling you. just trying to learn and get info. i catch enough hell from people around me who are novice. if things dont sound right to you, sorry dont read it, but if you see something im doing wrong correct me, i wont get mad about that, obiously some things on the car are very wrong. im putting her up on my lift at my house to see if maybe i got a vacum leak or what. thanks to anyone who helped and ehh ok to those who didnt. take care either way.

matt

[Matt Cramer]

Originally Posted by lone5oh first off i pulled the spout, it moves all over at 15degrees with it out, and is all over 20 degrees with it in, it just moves around...

Sounds like you've got some pretty severe timing chain stretch, or the distributor isn't tightened down right. That much wander suggests there is something mechanical that's broken.

[lone5oh]

finally got ahold of a ford mechanic. he told me the timing normally moves around with the computer compensating, so no loose distributor, no left the spout out, no streched timing chain especially with it being brand new, no not tighenend down distributor, just normal ford thing that is with everycar.

hmm odd

[93mustank]

When the spout is out the computer does not control it....

[old gray fox]

what do you know about the fuel pump you have, (lean at top end)

[95StangMX]

+1 thats the whole reason for having the spout connector is to remove it to keep the computer from compensating while timing the motor....maybe a bad spout connector? and I am willing to bet that a 80 mm maf is def not calibrated for 19 lb injectors I am sure you are right and the kid just bought the biggest he could find and new nothing about it being callibrated...

[1slo5.0]

The timing jumping around could be a sloppy timing chain or more than likely a hunting idle. If the idle doesn't stay at a continuous rpm, the timing will jump around at idle. So if the idle is jumping around from 800 to 900 rpm the timing is going to move accordingly.