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Old 04-08-2011, 10:19 AM   #1
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Default oil drain line backing up using moroso oil pan.

i have a GSR engine with 4 QT Moroso oil pan.

http://www.moroso.com/catalog/catego...?catcode=10911

i was taking off my turbo and when i disconnected the -10 oil drain i had oil come out of the line and from the pan. i used 4 quarts of oil which, according to my dipstick, was the correct amount, top dot. my drain comes STRAIGHT down out of my gt35r and then into a 90 degree fitting once the line is on the same plane as the bung for the oil pan.


my thinking is that oil is only partially backing up into my line and still has room to drain but cant drain completely because the bung is slightly below the oil level.


does this sound like a problem or is this normal?

thanks, doug.
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Old 04-08-2011, 10:30 AM   #2
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Default Re: oil drain line backing up using moroso oil pan.

its most likely your 90 degree fitting causing the problem.
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Old 04-08-2011, 10:41 AM   #3
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Default Re: oil drain line backing up using moroso oil pan.

Quote:
Originally Posted by kyden View Post
its most likely your 90 degree fitting causing the problem.
Either that, or I've also heard of the Moroso pans not reading correctly with the dipstick. I know it sounds weird, but I remember something about people not getting correct reading or something. BUT, if you're putting in 4 qts and it's reading good on the dipstick, then it's probably what that guy said about the 90 fitting
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Old 04-08-2011, 10:41 AM   #4
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Default Re: oil drain line backing up using moroso oil pan.

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Originally Posted by kyden View Post
its most likely your 90 degree fitting causing the problem.
yes. what size line is being used? the problem is that you are having a steady flow of oil come to an abrupt turn. think of it like driving, you are hauling *** down a stright, but have to slow way down to make the turn. same deal here, but the oil doesn't know to turn, so it all just stops at the turn and causes a build up of oil. if at all possible, try to use a straight or a 45* fitting to help the flow stay consistant

or, depending on the size line you are currently using, step up to the next larger size. i personally use -8 or -10 drain lines
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Old 04-08-2011, 10:48 AM   #5
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Default Re: oil drain line backing up using moroso oil pan.

My stock oil pan leaks oil w/ 4 quarts from my drain back -10 fitting when I take off th line and the motor hasn't been ran in a while....while the motor is running a lot of oil is sucked up into the head, turbo, etc and that level decreases. As long as you don't have the oil return line facing up-hill (at all) you should be fine.
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Old 04-08-2011, 12:49 PM   #6
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Default Re: oil drain line backing up using moroso oil pan.

Thanks for all the input.

I am using a -10 line.

I will likely use a 45 since that should be a simple solution.
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