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Old July 18th, 2013, 07:56 AM   #1
knaffie
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Default oil starvation on startup with remote filter and accumulator

I'm getting some engine noise on startup until I see oil pressure on the gauge, which is usually 5 seconds or so. I have a Canton remote oil filter setup with the filter mounted pretty high in the car. I have a Moroso 3 quart accumulator plumbed into an adapter that replaces the factory oil bypass. I do not have an oil cooler, so the lines for the oil filter go out, to the filter, then back in.

I'm guessing since the filter is mounted pretty high that oil is draining back into the engine and I'm getting noise until the remote lines get full of oil again. I have done a lot of research on the M1-302 (Mobil 1) filter I have on there and found that while it does have an anti drain back valve in it, a few people have noted that it does not work all that well, based on informal (at home) tests and the same engine noise at startup I'm hearing.

So....... Different oil filter? Install a real check valve in the system? Else?

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Old July 18th, 2013, 08:04 AM   #2
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Valve on Accumulator?

Last edited by GearDrive; July 18th, 2013 at 08:13 AM.
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Old July 18th, 2013, 08:09 AM   #3
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try a different filter or maybe run the lines up over the mc and down to the filter to stop the drain back
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Old July 18th, 2013, 08:18 AM   #4
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Valve on Accumulator?
I have a manual ball valve on the accumulator. The only time I close it is to check the oil level or if I know I'm going to park it for a long time to trap the oil, then pre-lube before I start it.
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Old July 18th, 2013, 08:19 AM   #5
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try a different filter or maybe run the lines up over the mc and down to the filter to stop the drain back
How / why would re-routing the lines stop it?
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Old July 18th, 2013, 08:32 AM   #6
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Maybe an 12 volt, normally closed, electric valve, wired into ignition. When you shut off the engine, the valve closes, trapping oil and pressure. When you turn key on, valve opens, and pressurizes the system.

Or some other method of utilizing the accumulator to pressurize the system before startup.
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Old July 18th, 2013, 08:43 AM   #7
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That would work, however, it should be completely unnecessary if the rest of the system is working correctly. I'm really trying to avoid adding any more devices to this car that it doesn't need. Simple = more reliable.
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Old July 18th, 2013, 09:14 AM   #8
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Never though about oil from the accumulator going backwards to the filter instead of to the engine. This piece may solve two potential problems at once.

https://www.cantonracingproducts.com...-VALVE-12NPT/#
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Old July 18th, 2013, 09:20 AM   #9
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Since you want to keep it simple.. do you really need the accumulator for a rec rig? I get why the comp guys run them since shutting down and winching would make it noncompetitive, but for what you do, do you really hang off camber for extended periods?
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Old July 18th, 2013, 09:39 AM   #10
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How / why would re-routing the lines stop it?
right now from the pic the filter is the highest point you shut your engine off oil drains out of the lines and a bit out of filter, if you would run the lines higher then the filter then back down to the filter it can only drain the oil out of the lines from the high point to the engine, the high point to the filter will hold the oil in the lines and the filter
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Old July 18th, 2013, 09:40 AM   #11
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I absolutely need an accumulator. It has nothing to do with being a rec rig or a race rig. I take just as steep of lines as anybody else does. Sometimes an extra 30 seconds is all it takes to be able to drive out of a situation. I would say in my first two days out without it, I probably saw the oil pressure gauge hit zero 10 times. As soon as I put the nose up high, I had about 10 to 15 seconds before the oil pressure started to drop. This is why I put the accumulator on there in the first place. That problem is solved now. I have not seen the gauge drop since installing the accumulator. Not that it will never drop, but I have always been able to get back off the incline soon enough to prevent that from happening.

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Old July 18th, 2013, 10:11 AM   #12
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Oh, I figured it came with it. The Gen3/4 rigs I've been around have some time at angle before they start ticking or blowing smoke.

Continue on.
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Old July 18th, 2013, 10:37 AM   #13
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I appreciate the help. Fbody pans are the worst from what I can gather.

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