7AFTE Build!, This friday. Options

[Mynzeyes]

Random update: everything is basically on. Just have to run the IC piping, and hooker a few vac hoses. It took a while longer than anticipated because of finding someone to weld/braze the return fitting into the oil pan, and trying to find someone to do the exhaust work. Still have yet to get that made. We had to swap to a different manifold, luckily Jack brought all his turbo goodies over, and we just grabbed out of his what we needed. Finding a fitting for the oil feed line coming out of the block was quite a pain, but we finally got one. All that is hooked up. Also, we had to find some vac T's, and a couple of check valves. Hopefully what we got will work, but if not, we'll add one or so, and go from there. We just have a few more things to plug up, and then we'll be good. That's the only pain about working on something like this over the weekend. Finding places open to find the little special things you need. BLAH. Another update to come.

[presure2]

Random update: everything is basically on. Just have to run the IC piping, and hooker a few vac hoses. It took a while longer than anticipated because of finding someone to weld/braze the return fitting into the oil pan, and trying to find someone to do the exhaust work. Still have yet to get that made. We had to swap to a different manifold, luckily Jack brought all his turbo goodies over, and we just grabbed out of his what we needed. Finding a fitting for the oil feed line coming out of the block was quite a pain, but we finally got one. All that is hooked up. Also, we had to find some vac T's, and a couple of check valves. Hopefully what we got will work, but if not, we'll add one or so, and go from there. We just have a few more things to plug up, and then we'll be good. That's the only pain about working on something like this over the weekend. Finding places open to find the little special things you need. BLAH. Another update to come.

ahh the joys..lol
be sure and get LOTS of detailed pics guys, the 7A guys could really use a good writeup with good, detailed pics.

[nate95]

im getting ready to go work on the intercooler piping while johns at work, and connect the oil drian line. and we were talking about smoking out my back tail lights if we get the time

[nik]

[/quote]
ahh the joys..lol
be sure and get LOTS of detailed pics guys, the 7A guys could really use a good writeup with good, detailed pics.
[/quote]

Thanks manny

ahh the joys..lol
be sure and get LOTS of detailed pics guys, the 7A guys could really use a good writeup with good, detailed pics.

thanks manny

[Mynzeyes]

Yeah, actually, we've had to reference Nik's write-up a couple of times about some things. Although I do agree it could be a little more clear, especially in the FMU/vac area, but it's still a very good write-up. We'll have a lot of pics, and I'll do my own write-up in the near future. Anywho, hopefully it should be running tonight, pending everything goes somewhat smoothly.
-John-

[presure2]

[quote name='nik' date='Oct 9, 2006 - 3:04 PM' post='489498']
[/quote]
ahh the joys..lol
be sure and get LOTS of detailed pics guys, the 7A guys could really use a good writeup with good, detailed pics.
[/quote]

Thanks manny

[quote name='presure2' post='489390' date='Oct 9, 2006 - 6:38 AM']
[quote name='Mynzeyes' post='489293' date='Oct 9, 2006 - 12:29 AM']

[/quote]
ahh the joys..lol
be sure and get LOTS of detailed pics guys, the 7A guys could really use a good writeup with good, detailed pics.
[/quote]

thanks manny
[/quote]
sorry nik, it wasnt meant as a knock on you, the more pics and info we can acumulate about what people run into, and diffrent setups, the better off we'll all be.
if it came off as a knock on ya, im sorry, that was NOT my intention at all. i appreciate everything youve done for the site, including your 7afte writeup.

[nik]

manny im just messing with you lol

[nate95]

car has started!!!! how ever its running rough and we are trying to figure out how to tune it good.. its laging with throttle response, and when reved it and let off it drops really low and almost dies then comes back up? and the fpr reads 2, does any body know what it should read, or any advice on tuning it, thanks.

[Mynzeyes]

car has started!!!! how ever its running rough and we are trying to figure out how to tune it good.. its laging with throttle response, and when reved it and let off it drops really low and almost dies then comes back up? and the fpr reads 2, does any body know what it should read, or any advice on tuning it, thanks.

OK. After messing a little, and getting the minor fuel leak fixed, and capping off one of the three check-valves, the car idles and revs fine with a stable vac pressure(-20psi). However, under acceleration, the car acts like it is having the fuel cut, until around approximately 2700rpms, and then the rpms will climb, and the boost gauge shows positive boost (5psi). That's under 50% throttle at most, as I'm not going to press the turbo bc a) it's just a test run, and b) there's no downpipe yet. Anyway, any clues why it's getting premature fuel cut, but then leveling out and accelerating smoothly with boost?

-John-

[Mynzeyes]

On the list for tomorrow to check regarding issues at hand:
- Check valves: make sure they are installed in the right air-flow direction.
- Spark plugs: new, colder plugs.
- Downpipe: having one made.

I think that's about it. All tomorrow will consist of is a little bit of tuning and test driving, so Nate can make it home safely.

Any ideas regarding the issues, please post and lemme know your thoughts.

-John-

[nate95]

we are having some big problems now,, we can't get anybody to connect the turbo to the exauhst pipe. and the turbo is frying the alternator with out a DP.

[playr158]

did you buy a downpipe flange for them to use? or did you just say here is my car help!

oh btw did John check the check valves like i said?

This post has been edited by playr158: Oct 10, 2006 - 12:52 PM

[trd94]

car has started!!!! how ever its running rough and we are trying to figure out how to tune it good.. its laging with throttle response, and when reved it and let off it drops really low and almost dies then comes back up? and the fpr reads 2, does any body know what it should read, or any advice on tuning it, thanks.

OK. After messing a little, and getting the minor fuel leak fixed, and capping off one of the three check-valves, the car idles and revs fine with a stable vac pressure(-20psi). However, under acceleration, the car acts like it is having the fuel cut, until around approximately 2700rpms, and then the rpms will climb, and the boost gauge shows positive boost (5psi). That's under 50% throttle at most, as I'm not going to press the turbo bc a) it's just a test run, and b) there's no downpipe yet. Anyway, any clues why it's getting premature fuel cut, but then leveling out and accelerating smoothly with boost?

-John-

to much fuel , your fuel persure is not right it should be around 45-50 psi ,and check to make sure the fpr lines are hooked the right way if the are backwards the will cause cut because the fuel is not under the right persure

[playr158]

he doesn't have a FPR only using an FMU...
(from what John said while i was talking to him last night)

[trd94]

he doesn't have a FPR only using an FMU...
(from what John said while i was talking to him last night)

they said they installed a adjustable fuel persure regulator, of at least that is what i was told

[nik]

i think i have detailed pics in the how to turbo a 7afe on how i hooked my fmu up

also do you have one step hotter plugs in? and while on the dyno i adjusted my throttle plates and retared my timing also

here is a side shot


this shot shows the other side of the fmu and where i T'd into for my boost gauge


This post has been edited by nik: Oct 10, 2006 - 2:37 PM

[celicaST]

he doesn't have a FPR only using an FMU...
(from what John said while i was talking to him last night)

if im not mistaken, isnt that 2 ways to say the same thing? rrfpr is the same thing as an fmu.

[playr158]

no a fmu is much different in the way it functions from a FPR...

[celicaST]

no a fmu is much different in the way it functions from a FPR...

how so? not trying to be a smartass, just want to know because everywhere ive read an rrfpr and fmu are just two seperate terms for the same device like pop and soda.

[trd94]

no a fmu is much different in the way it functions from a FPR...

how so? not trying to be a smartass, just want to know because everywhere ive read an rrfpr and fmu are just two seperate terms for the same device like pop and soda.

a fmu or fuel management unit increases the fuel persure as the boost increases where a fpr or a fuel presure ragulator only keeps the amount of fuel presure in the fuel rail at a set psi ,a adjustable fpr just lets you adjust the psi but will not raise the presure past the setting you set it at , where the fmu will raise the fuel presure x times the boost like a 12:1 will raise 12psi per psi of boost 5 psi would be 60psi of fuel presure + your setting of the fpr witch lets say it is at 50psi so at 5 psi of boost your are running 110psi of fuel in your fuel rail and that lets the injectors take more fuel but they will only take as much as the are rated for , hope that helps and if i got some thing wrong please tell me as this is what i was told and what i have read