Paxton Kit woes

[robwclark]

DC Performance is a great organization and has helped lots of people here.

I am beginning to think the same about Robert!

Cleburne...hehehe, I had a girl friend from there...she and I were at TCU, she taught me a lot!

Really what was her age & name? I was raised here, been here my whole life. Where are you at?

Yea I remember having problems with vehicle issues when I was younger, and really needing help. I remember not even being able to get help, so I try and help anyone who I can. I am be no means a professional, but I know these trucks and Viper cars fairly well now, but you will still see me post needing advice from others who have been down the road I'm currently traveling. These forums are absolutely wonderful. I wish they were around when I was younger.

 

[RedSrt007]

I would be very careful @ 12.1 a/fs @ 7psi, your playing with fire

 

[fastbill]

l would def look at your PCV setup again.. not sure what truck you have, but l know the manual specifically says for an 04RC you have to put valve on the passenger side cover. 06QC's go on front of drivers valve cover. Not sure why the difference, maybe because of the automatic's dipstick? The way you have yours sounds like it could be just sucking oil right out of the valve cover. Can go to paxtonauto.com and download manual to look at if you don't have it.
also, fuel pressure sounds way too low. Mine is at 45-50lbs at idle, and increases dramatically under boost. l'll have to look to see where l'm picking up my reading from. Usually watching the rapidly approaching objects when l'm under boost, ,so l can't tell you for sure how high, but l know it goes way up real fast. A/F is a little high, too, in my opinion, l would think your tuner would want it lower, as others have said.

 

[Prof]

Really what was her age & name? I was raised here, been here my whole life. Where are you at?

Yea I remember having problems with vehicle issues when I was younger, and really needing help. I remember not even being able to get help, so I try and help anyone who I can. I am be no means a professional, but I know these trucks and Viper cars fairly well now, but you will still see me post needing advice from others who have been down the road I'm currently traveling. These forums are absolutely wonderful. I wish they were around when I was younger.

No names...well maybe over a beer some time...it was in the early 70's!

And thanks for your technical input...you are always helpful.

Roy

 

[robwclark]

If the supercharger was leaking wouldn't there be more oil on the supercharger side than on the egine side? Mine is wetest from the throttle blades to the aftercooler:dontknow:

If your getting oil all over your a/c drier you have oil issues away from the engine side. You need to find where the oil is coming from on that part of the system. You should not have oil coming out of the blow-off valve.

Also, there is an easy way to tell if you have engine blow-bye. Make sure the engine is good and warm, then:
1. Take your oil cap off with the engine running.
2. Put your right hand over the oil filler hole.
3. Use your left hand and rev the engine up hard from idle to 4500 or so.
4. See if you get any air or smoke blowing out on your right hand.

If you have any considerable air or smoke coming out, you have a ring failure. You'll know if it does because the air will blow on your hand or you will see smoke puffing like a train coming out of the oil filler hole. I doubt this is your problem yet.

And yes, get rid of the hose going from the intake hose to the valve cover. It is possible your sucking oil out of the valve cover under sudden boost drop(but I still doubt it). I think you have an oil leak in the paxton unit itself. It is possible the oil travels quick enough to not leave large amounts until it gets to the blowoff valve or gets close to the intake manifold. At those points it could be "bunching up" and residing there.

 

[robwclark]

l would def look at your PCV setup again.. not sure what truck you have, but l know the manual specifically says for an 04RC you have to put valve on the passenger side cover. 06QC's go on front of drivers valve cover. Not sure why the difference, maybe because of the automatic's dipstick? The way you have yours sounds like it could be just sucking oil right out of the valve cover. Can go to paxtonauto.com and download manual to look at if you don't have it.
also, fuel pressure sounds way too low. Mine is at 45-50lbs at idle, and increases dramatically under boost. l'll have to look to see where l'm picking up my reading from. Usually watching the rapidly approaching objects when l'm under boost, ,so l can't tell you for sure how high, but l know it goes way up real fast. A/F is a little high, too, in my opinion, l would think your tuner would want it lower, as others have said.

This is probably non-related to the oiling problem, but yes fuel pressure seems too low to be correct. I am assuming your not using the paxton split-second box....RIGHT??? If you are, you have MASSIVE low fuel pressure, and thats needs to be corrected ASAP, and in which case is almost certainly your oiling problem.(you dont wanna know how the oil got there if this is the case)

Now, I am assuming your using some kind of computer tuning to fuel the engine under boost. He is my problem with 20 or 30 lbs of FP. . . . . . Stock fuel pressure is regulated from the fuel regulator back by the fuel tank. Stock fuel pressure is 58. ANYTIME you are tuning for boost you are simply widening the pulse of the injectors for extra fuel. For a correct tune to be performed, fuel pressure must stay fairly consistant with little or no drop at all. You stock fuel pump should support the paxton, but your FP is dropping you may need a stronger fuel pump.

OK now you have me nervous, let me know if your using the paxton split second box & dual in-line pumps?

 

[SANTEEN]

This is probably non-related to the oiling problem, but yes fuel pressure seems too low to be correct. I am assuming your not using the paxton split-second box....RIGHT??? If you are, you have MASSIVE low fuel pressure, and thats needs to be corrected ASAP, and in which case is almost certainly your oiling problem.(you dont wanna know how the oil got there if this is the case)

Now, I am assuming your using some kind of computer tuning to fuel the engine under boost. He is my problem with 20 or 30 lbs of FP. . . . . . Stock fuel pressure is regulated from the fuel regulator back by the fuel tank. Stock fuel pressure is 58. ANYTIME you are tuning for boost you are simply widening the pulse of the injectors for extra fuel. For a correct tune to be performed, fuel pressure must stay fairly consistant with little or no drop at all. You stock fuel pump should support the paxton, but your FP is dropping you may need a stronger fuel pump.

OK now you have me nervous, let me know if your using the paxton split second box & dual in-line pumps?

Rob,
He and I are using very similar setup's. Larger 65lb injectos, stock fuel pump and SCT with Torrie's tuning. I can confirm his low fuel pressure readings and still being able to maintain good A/F numbers. As I'm experiencing the same phenomenom. I'll be adding the Boost-a-pump soon, just for piece of mind. But after Torrie's dyno tuning last night, I'm at 11.8 - 12.0 A/F at WOT and full beast.

 

[McLuvin]

Thanks for all the advice...
I am planning on forged internals and duel intank walboro's but not for 6 or 8 months still. I am hitting low 12's a/f on max boost but I dont think there is any timing advance on this tune. With that said, shouldn't I be safe?

As far as the pcv. I have the driver side valve cover fitting free to the atmoshere and the intake vac blocked. Ive made a few hard runs like to see if there is any oil on the valve cover or external intake. There is none.
The paxton manual has the pass side hose going straight to the pre charger pipe. No pcv valve. Thats how I have mine. I really hope this chager isn't the problem. According to the seller it only had 500 miles on it!!!!!!

 

[34bud]

Make sure you have plumbed your breathing system as per Paxton instructions. The R/C and the Q/C plumb differently. Instruction are avalible on line. Also in most cases when you blow a hose off the ducting its because your compessor bypass is turned in to far and not letting it get rid of the boost presure when you nail it WOT and lift. Loosen the jamb nut on the bypass housing and back the stud out a few turns.Normaly the stud sticks out about a half inch past the nut the stud controls how far the valve opens These are set when new but because its used someone probably screwed with it thinking they were loosing boost because it opened to far. You want it to open completely. The valve will close when your making boost

 

[McLuvin]

I will check that. Thanks

 

[McLuvin]

How can I verify the supercharger is blowing oil? Remove the intake tubes and run the truck. Place a hand over infront of the discharge and rev the motor? Anyone see a problem with this?

 

[FerrariTruck]

How can I verify the supercharger is blowing oil? Remove the intake tubes and run the truck. Place a hand over infront of the discharge and rev the motor? Anyone see a problem with this?

no, the flow of air and suction created will evacuate the oil...But to be certain of where its coming from you can purchase dye at an auto parts store and put in the supercharger oil reservoir. Run the truck around a lil bit and then inspect it with a flourescent light. If you see dye you have your answer...

But jeez guys, i would not want my a/f past 11.5 tops! on the stock cardboard pistons! I would also not want fuel psi lower then 50psi..My truck would be parked until that issue is fixed

 

[JTS VENOM PERFORMANCE]

Luvin, believe me when I say I am not tryin to be an as#, but seek proffessional help at a local shop

 

[robwclark]

Luvin, believe me when I say I am not tryin to be an as#, but seek proffessional help at a local shop

Yea I agree its tough to diagnose on the keyboard. Just be sure whoever you get help from is HONEST as most shops are after one thing.....$$$$$$$

 

[Prof]

...
But jeez guys, i would not want my a/f past 11.5 tops! on the stock cardboard pistons! I would also not want fuel psi lower then 50psi..My truck would be parked until that issue is fixed

Patrick said this, as have several others...detonation is a consequence of too little fuel...detonation is the beginning of the end of stock pistons.

You will probably want to check the top of your pistons and your plugs for signs of detonation...I would also do a leak down test...

see a professional ASAP

 

[McLuvin]

I am ASE certified with round 20-25grand in tools. I have no real expiriance with supercharger but, I am working on learning it. Sorry guys. No shop for me other than my garage. This project is mine only. It would ruin it to pay for help. I'll tear into it and let you know what I find

 

[Prof]

Forced induction on stock Viper internals is very very dicey...

The tune is key as you have probably surmised from the comments above.

Enjoy the process, the piston lands are the weakest point...many of us have discovered cracks in the lands, even without distruction...blow-by is the initial symptom, and it is "assumed" that the combination of additional pressure, elevated heat and the consequential detonation is the cause.

Great having you with us...keep us posted on your progress...and check the top of those pistons...if you find a diamond mine...be concerned...

 

[4DR VYPR]

I've got the Paxton setup on a QC with 7lbs of boost. I had to switch to the good clamps to keep the hose from blowing off also.

The oil everywhere that you're talking about-does it look like its coming from the small breather supplied from Paxton on the passenger side? If so, you can do what I did. I put an accumulator on it and I have to empty it every once in a while. Before I got that thing, I had a little oil after hard runs.

 

[SANTEEN]

I've got the Paxton setup on a QC with 7lbs of boost. I had to switch to the good clamps to keep the hose from blowing off also.

The oil everywhere that you're talking about-does it look like its coming from the small breather supplied from Paxton on the passenger side? If so, you can do what I did. I put an accumulator on it and I have to empty it every once in a while. Before I got that thing, I had a little oil after hard runs.

Do you have a pic of the setup?

 

[McLuvin]

I have alot of oil. I really dont think its comming from the pcv, though thats what I originally thought. Im going to play with it later today..I hope!!