Going For 800 Rwhp

[05stroker]

Don't know yet. I do know the regulator never made up for the boost on the last pull. The WG didnt open either. I hit 19 psi with about 16 psi FP IIRC. Something happened and the regulator never made up for the boost. These road pulls leave very limited time for watching the gauges at these levels. I am on my way to get it back together though. I will not be able to do back to back results on the Comp 127550 cams vrs my custom grinds though, since I am installing them now with the new springs. I have to have a new #8 sleeve and piston, along with new rings and bearings since the metal got to the bearings. I have some diagnosis to do on the fuel system to see what actually caused this though.

Let me stress that this is NOT a tuning issue. I was dataloging when it happened. The fuel system never made up for the boost on the pull. This is a mech. failure of some sort. I just need to figure out what it was before I proceed.

I still think it has to be a leak somewhere, lines or even the regulator membrane itself, what makes me think that way is how it occurred when boost raised rapidly, after transmission shifted and raise rate was lower everything went back to normal and fuel pressure was back there.

Either way, redesigning the layout will only help.

This is the issue that we are looking into, while in fast RPM raise, regulator lost fuel control and did not compensate, once it shifted it recovered control.

Any help guys? I am open to suggestions...

I will not exclude any thing at this point. The new parts are all almost here and I still dont know 100% what happened.

Can fuel or oil puddle and the intake and cause something like this?

EDIT: All vac lines came off the bottom of the JPC intake.

 

[05stroker]

So everyone is clear on the issue, the fuel regulator and WG never saw the boost and the MAP sensor did even though the fuel regulator and the MAP sensor are teed from the same line and "ALL" the vac lines came from the same point on the bottom of the intake.

 

[toorbeenee]

last week i saw a brand new SX fuel regulator fail,,,,and WG you can do a simple check to make sure its working.

hmmmm you said MAP sensor? i didnt know that 05 mustang had them or do you have a stand alone?

 

[05mustang_TT_charged]

last week i saw a brand new SX fuel regulator fail,,,,and WG you can do a simple check to make sure its working.

hmmmm you said MAP sensor? i didnt know that 05 mustang had them or do you have a stand alone?

He has the MAP sensor on there to datalog boost with.


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[05mustang_TT_charged]

So everyone is clear on the issue, the fuel regulator and WG never saw the boost and the MAP sensor did even though the fuel regulator and the MAP sensor are teed from the same line and "ALL" the vac lines came from the same point on the bottom of the intake.

Need to tie wrap or hose clamp them things on there. I did all mine on my KB as the line going to the FRPS kept blowing off. I had hose clamps everywhere and tie wraps. I was only running 21 psi and they kept coming off.

EDIT: thanks for the heads up. I will make sure with the turbo kit to hose clamp the vac line on the bottom of my JPC intake.


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[Back@itagain]

Any progress? Sure would like to see this up and running again after all the hard work.

 

[05stroker]

Any progress? Sure would like to see this up and running again after all the hard work.

Getting close!

Last Sun.

Today.

I also desided to use the v10 vct deletes this time instead of my own cnc pcs. After looking at the v10 pcs I noticed they have some restrictions that Ford must have there for a reason.

 

[toorbeenee]

^^good choice, maybe some oil pass or something

 

[Back@itagain]

Looking real good...so was it ever clealy determined what caused the fuel/boost reference drop off?

 

[05stroker]

Looking real good...so was it ever clealy determined what caused the fuel/boost reference drop off?

Not yet, I am going to pull the fuel pumps later today and check everything out.

I was thinking the other day about this and I feel like there is something wrong there in the fuel system. I remember the car not wanting to take over 8 or 10 gal to fill up and the fuel pressure would take a little longer to pressurize my gauge when I turned the key on.

It could be possible that the siphon hose is disconnected or something and the drivers side of the tank is low on fuel even though my gauge shows a little less then a 1/2 tank. As for the WG not opening, that could be due to the fuel issue and the oil that was pushed into the intake and filling the vac line to the WG. Should know more tonight.

 

[lito]

^That makes some sense, either way I would suggest you to change the order of the components in the setup.

 

[05stroker]

^That makes some sense, either way I would suggest you to change the order of the components in the setup.

I have. The fuel goes from the fuel pumps to the engine bay and then tees to the rear of the rails. It then goes through the rails and does a 180 at the front of the rails to the rear of the intake where each side then goes to the sides of the regulator and then a return line to the tank.

 

[05stroker]

Pulled the pumps tonight. 1/2 of a tank on both sides. That rules out the siphon thought. I did however find this. Remember I was on two pumps with two MSD BAPs delivering power in line to the pumps. Looks a little burnt where the plastic is bubbled up wouldn't you say?

 

[lito]

No, you end passenger's tank first, then driver's. Actually, looks something is not right with the eductor line. When you have half tank, your driver's is full and passenger's is empty.

That pump does not look good. Any chance of testing in by itself?

Pulled the pumps tonight. 1/2 of a tank on both sides. That rules out the siphon thought. I did however find this. Remember I was on two pumps with two MSD BAPs delivering power in line to the pumps. Looks a little burnt where the plastic is bubbled up wouldn't you say?

 

[05stroker]

No, you end passenger's tank first, then driver's. Actually, looks something is not right with the eductor line. When you have half tank, your driver's is full and passenger's is empty.

That pump does not look good. Any chance of testing in by itself?

That's right! I knew that . lol ! Pass side should be empty now. I will put power to the car one day this week and check the fuel level on the gauge again.

I will definitely test that pump and the other two as well and post the results,

 

[05stroker]

I will definitely test that pump and the other two as well and post the results,

Checked the pump this morning and it is not working. The other one works fine though and I still have the third one that wasn't hooked up to use. So now the decision is, what to do with this pump setup. I think for now I will reinstall the two good pumps with the MSD BAPs hooked up with one to each pump instead of being in line with each other feeding both pumps. And install some kind of small LED lights (one for each pump) to let me know if the pump is running or not. Just need to figure that one out.

The thing I am afraid of now is, what if one of the components fail and it goes lean again? With three seperate pumps and two BAPs, there are 5 components to make up this fuel system. If any one of them goes bad, there is an issue. Sure makes me think about a single noisy ass big pump.

This is the same issue that killed my motor in 2008 at Ennis FFW. A fuse to one of the BAPs was not pushed in the holder and the pump only saw voltage intermittently causing the car to run on one pump and go lean and melt a piston. Only difference is this time it was a pump that went out.

I am open to suggestions if anyone has an idea that could work better.

 

[Mike K]

I would go the safest route and like you said one noisy ass pump. Its not like you'll hear it over the procharger and exhaust. Lol

 

[05stroker]

I would go the safest route and like you said one noisy ass pump. Its not like you'll hear it over the procharger and exhaust. Lol

That brings me to my next question. What if the large single pump goes out under boost, would the car just shut off or would it still lean the cylinders on its way out under 20 psi and still melt everything down?

 

[Mike K]

Calling Lito! Lol

 

[lito]

If it quits completely then it will shut off, but not all pumps go out that way so it would not be a solution, a big ass pressure referenced warning light would be of help.

In my setup, I have the aeroforce set to lit if deltaP comes below 40psi, having the system set to 50psi and in the current config of injectors and boost, system still works with 40 psi and a little under that pressure so it will lit before it goes lean because of it.

I know autometer has oil pressure warning lights, don't know if there is something configurable to be set at say 40psi with a gas/oil compatible sensor.