dry sump on a C3
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
Cold pressures aside, if you've significantly more than 10 PSI / 1000 RPM at redline (or any other RPM), I'd seriously consider adjusting your relief spring to bring hot pressures back down to the 10/1000, to reduce sump evacuation at high revs.
Filter wise for such an application, I highly suggest you stick with Canton, Moroso or other reputable manufacturer's racing filters with higher flow and burst ratings than their street counterparts. Biggest plume of flames I've ever seen out of my rear view mirror were due to a non-bypassed filter that failed.
Filter wise for such an application, I highly suggest you stick with Canton, Moroso or other reputable manufacturer's racing filters with higher flow and burst ratings than their street counterparts. Biggest plume of flames I've ever seen out of my rear view mirror were due to a non-bypassed filter that failed.
Thread Starter
Melting Slicks
Joined: Mar 2002
Posts: 2,164
Likes: 7
From: Beringen
Cold pressures aside, if you've significantly more than 10 PSI / 1000 RPM at redline (or any other RPM), I'd seriously consider adjusting your relief spring to bring hot pressures back down to the 10/1000, to reduce sump evacuation at high revs.
Filter wise for such an application, I highly suggest you stick with Canton, Moroso or other reputable manufacturer's racing filters with higher flow and burst ratings than their street counterparts. Biggest plume of flames I've ever seen out of my rear view mirror were due to a non-bypassed filter that failed.
Filter wise for such an application, I highly suggest you stick with Canton, Moroso or other reputable manufacturer's racing filters with higher flow and burst ratings than their street counterparts. Biggest plume of flames I've ever seen out of my rear view mirror were due to a non-bypassed filter that failed.
Filter has a relief valve and is functioning correct. It has a burst pressure of 200 psi which far removed from the bypass setting of 75 psi.
Burning Brakes
Joined: Oct 2008
Posts: 955
Likes: 50
From: Jersey Shore
Refresh my memory. In addition to the accumulator do you already have a baffled/gated RR pan (including rear main baffle), a decent windage tray and crank scaper, is your valley deberred and sealed (Glyptal), and how are you on pickup to sump clearances and oil pressures (10/1000)?
Myself, having long fought with this issue, I'm leaving no stone unturned this time around in hopes I can ultimately avoid the trouble and expense of a dry sump system before giving up. In addition to everything mentioned above, I've also got a bottom-feed, submerged pump setup which virtually eliminates any requirement to lift oil up to the spur gears (in addition to height, pickup tube design and length can also come into play with lateral G's). And, I'll most likely mount a low-pressure warning light under the cowl (L88) out in front of the windshield, and have been considering a no-pressure cut-off. My $.02, FWIW.
Myself, having long fought with this issue, I'm leaving no stone unturned this time around in hopes I can ultimately avoid the trouble and expense of a dry sump system before giving up. In addition to everything mentioned above, I've also got a bottom-feed, submerged pump setup which virtually eliminates any requirement to lift oil up to the spur gears (in addition to height, pickup tube design and length can also come into play with lateral G's). And, I'll most likely mount a low-pressure warning light under the cowl (L88) out in front of the windshield, and have been considering a no-pressure cut-off. My $.02, FWIW.
Ive also got a low pressure (20 psi) warning light in place of my headlight open warning lamp (under the door ajar light). I just sprayed a yellow tint over a piece of lexan cut out to fit the stock hole.
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
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Last edited by TheSkunkWorks; Aug 9, 2013 at 10:58 PM.
Pro
Joined: Jun 2009
Posts: 613
Likes: 3
From: Fleetwood PA
Oh....dry SUMP on a C3.....musta misread that title, glad I didn't post a pic
I have to say the V 12 is a really cool project, looks like the dry sump was one of the easier things to get worked out on that build. Very nice
I have to say the V 12 is a really cool project, looks like the dry sump was one of the easier things to get worked out on that build. Very nice
Racer
Joined: Sep 2010
Posts: 302
Likes: 14
From: Northern Ca.
Yes, the whole set up is a 2010 Grand Sport LS3 Dry Sump. We had to extend the accessories 7/8 to account for the extended crank. Oil pan fit perfectly. 2002 Accessories from a Camaro to clear the lower control arm. Water pump modified. etc. etc. Getting very close to starting. Check some codes and trouble shooting my spark issue, but should be very soon.
Thread Starter
Melting Slicks
Joined: Mar 2002
Posts: 2,164
Likes: 7
From: Beringen
Yes, the whole set up is a 2010 Grand Sport LS3 Dry Sump. We had to extend the accessories 7/8 to account for the extended crank. Oil pan fit perfectly. 2002 Accessories from a Camaro to clear the lower control arm. Water pump modified. etc. etc. Getting very close to starting. Check some codes and trouble shooting my spark issue, but should be very soon.
Racer
Joined: Sep 2010
Posts: 302
Likes: 14
From: Northern Ca.
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Thread Starter
Melting Slicks
Joined: Mar 2002
Posts: 2,164
Likes: 7
From: Beringen
Also the amount of oil in the tank and the size of the pan is the determining factor.
Race engines with dry sump usually need priming which is prohibitive for an engine that sees the street.
I see some aftermarket tanks holding up to 2-3 gallons of oil and due to the fact that the tank has to be higher to gravity feed the pump, it will drain all of the oil to the engine. You can guess the results with a shallow pan.
The rep at Peterson's also advised strongly against a valve (electric or not) in the line.
Race Director
Joined: Aug 1999
Posts: 18,126
Likes: 174
From: WI
Melting Slicks
Joined: Jan 2000
Posts: 3,326
Likes: 523
From: home
I have expereinced that condition on a ARE dry sumped C5. Was doing a clutch change, took out a flywheel bolt and out poured the oil. Seems (at least on the ARE setup) oil drains past the seal for the fitting that goes into the oil pump inlet. I don't think the OEM C6 does that.
Le Mans Master
Joined: May 2003
Posts: 8,877
Likes: 3,556
From: Fernandina Beach FL
2023 Restomod of the Year finalist
2020 C3 of the Year Winner - Modified
What kind of filter are you looking at using. It's mounted between the output of the pump and engine. My stock BMW external oil filter canister has a drain back valve - and you can find these cheap at the junkyard- I simply welded on an AN fitting to the stock tube...OR you could mount your filter higher up to eliminate the tank draining...
Richard
