APS System Smoking - scavenge issues

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Oct 24, 2011 | 11:19 AM

FastBlackTA

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Racer

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APS System Smoking - scavenge issues

Have an APS C5 system installed on my C6. LG upgraded turbos, standard APS scavenge pump. Smokes at idle at times - especially when the oil gets hot. I run 20 W 50 oil in this thing. Sometimes it's not bad, other times I'm embarrassed.....makes 1000 hp and the freakin thing looks like its about to blow up.

Ive heard of people using the Exo pump. Does anybody have any suggestions? Louis says do not run restrictors, and I dont wanna starve the turbos anyway.....

Suggestions??????????

Oct 24, 2011 | 11:38 AM

Corvette-Chris

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From: Shreveport/Bossier Louisiana

St. Jude Donor '08

TurboWerx exapump and good SS braided lines for draining and smoking will be gone.

Oct 24, 2011 | 11:58 AM

FastBlackTA

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Racer

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Quote:

Originally Posted by Corvette-Chris

TurboWerx exapump and good SS braided lines for draining and smoking will be gone.

What banjo style fittings did you use on the turbos with the SS lines?

Thanks for the reply

Oct 24, 2011 | 12:03 PM

Corvette-Chris

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From: Shreveport/Bossier Louisiana

St. Jude Donor '08

Quote:

Originally Posted by FastBlackTA

What banjo style fittings did you use on the turbos with the SS lines?

Thanks for the reply

The local hydraulic shop I get all my hoses from silver soldered -10 male fittings on the APS curved banjo fittings and it works great.

Oct 24, 2011 | 12:20 PM

FastBlackTA

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Racer

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OK. Are the -10's bigger than the ones APS supplies? Thanks again for the help. Did your car smoke intermittantly too at stop lights and stuff?

Oct 24, 2011 | 12:30 PM

corvetteracer22

Burning Brakes

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From: Barrington IL

Quote:

Originally Posted by Corvette-Chris

TurboWerx exapump and good SS braided lines for draining and smoking will be gone.

This solved my problem and I had this same issue.

Oct 24, 2011 | 12:52 PM

Corvette-Chris

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From: Shreveport/Bossier Louisiana

St. Jude Donor '08

Quote:

Originally Posted by FastBlackTA

OK. Are the -10's bigger than the ones APS supplies? Thanks again for the help. Did your car smoke intermittantly too at stop lights and stuff?

I forget how big the APS hoses were but mine were oil soaked and swollen a little. -10 is a good size to run, just don't run anything smaller.
Yeah, my car smoked terribly and this cured it.

Oct 24, 2011 | 03:51 PM

Ronnie_W

Pro

Joined: Jan 2003

Posts: 638

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From: St. Johns Fl

Quote:

Originally Posted by Corvette-Chris

TurboWerx exapump and good SS braided lines for draining and smoking will be gone.

This pump cured mine also. I haven't changed any lines yet.

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Oct 24, 2011 | 04:44 PM

SteveDoten

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From: Farmington CT

Cruise-In VII Veteran

how many APS kits made it onto C5's before they left??

Is APS still around?

Thanks, I did an install back in early 2007, have heard much about them since

Oct 24, 2011 | 05:03 PM

#10

Corvette-Chris

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From: Shreveport/Bossier Louisiana

St. Jude Donor '08

Quote:

Originally Posted by SteveDotenMotorsports

how many APS kits made it onto C5's before they left??

Is APS still around?

Thanks, I did an install back in early 2007, have heard much about them since

They don't make them anymore nor do they offer support (allegedly). I've never reached out for any APS support because I've never needed it.

Oct 24, 2011 | 08:14 PM

#11

FastBlackTA

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Racer

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Just ordered the new pump.....thanks guys.

Dec 2, 2011 | 11:15 AM

#12

FastBlackTA

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Racer

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Update - I made an aluminum bracket to mount the pump but it hangs down way to low for my liking. The pump is larger than the weldon pump.

I will probably have to mount further forward and up next to my intercoolers. I called turbowerx and they seem to think it will be fine there.

Dec 2, 2011 | 12:47 PM

#13

Corvette-Chris

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From: Shreveport/Bossier Louisiana

St. Jude Donor '08

Quote:

Originally Posted by FastBlackTA

I removed the heat shielding from the pump and placed in right where the APS pump went. My car is really low and it never scrapes.

Dec 2, 2011 | 02:44 PM

#14

FastBlackTA

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Racer

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So you removed the heat sink?

Dec 2, 2011 | 04:20 PM

#15

Corvette-Chris

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From: Shreveport/Bossier Louisiana

St. Jude Donor '08

Quote:

Originally Posted by FastBlackTA

So you removed the heat sink?

That's correct. 2 years, no issues.

Dec 5, 2011 | 11:17 AM

#16

FastBlackTA

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Racer

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Because my car is a C6 I was unable to mount it in the standard APS location. Had to move it forward and up between my intercoolers. Unfortunately, the car smokes HORRIBLY with the exa pump in this location. I'm at a loss.

Going back to the weldon and trying restrictors. What size is recommended?

Dec 6, 2011 | 06:55 PM

#17

Slow Z06

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From: Houston TX

I mounted my Exo under the pass headlight.

Dec 6, 2011 | 06:57 PM

#18

Slow Z06

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From: Houston TX

If your smoking with an exo, you need to have your turbos checked out. Also do a leakdown test on the motor.

Dec 6, 2011 | 09:50 PM

#19

lingenfelter200

Racer

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Quote:

Originally Posted by Corvette-Chris

TurboWerx exapump and good SS braided lines for draining and smoking will be gone.

He is right. The problem is with your scavenge If your car were working fine and this happen just now, I had it in my Gen 3 Dodge viper. Here is a link where to buy a good scavenge that can stop this smoke at Idle:

http://www.ebay.com/itm/EXAPUMP-Exa-...item19cb7263b3

I've used this, but it was not good enough for my turbos:

Dec 12, 2011 | 02:26 PM

#20

FastBlackTA

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Racer

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Update: I talked to a few people and found my restriction to be in the banjo fitting itself. By drilling out two holes in the banjo bolt to 17/64 it increased flow back to the pump. I run my aps pump in standard location with no smoke. These are upgraded turbochargers.

Last edited by FastBlackTA; Dec 12, 2011 at 02:29 PM.

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