toytech93

iTrader: (2)

I'm doing a mockup for my twin turbo chevelle and have a question about drain line fitting and angles. I'm tapping a holley oil pan for dual drains. i was trying to fit -10an 45 degree 1/2npt fittings but its very tight on frame clearance.
Can i use a -10 90 degree 1/2 npt fitting ?
A couple people have told me not to use 90 degree fitting in the drain back if i can avoid it.

Preston99WS6

iTrader: (7)

Yes a 90 can be done but its not optimal in some cases it can cause oil to back up AN10 should be more than large enough to prevent backup in the drain line make sure no portion of the drain hose is lower than the fitting if gravity draining, make sure the fitting has an upward angle when installed(like a 11 or 1 o-clock position when looking at oil pan from the side).

ACCLR8N

If your turbo is mounted high enough it will not be a problem. My oil drain is poorly placed resulting in a horizontal section of hose and 90* hose end entry into the pan.

SPRAYED 01

iTrader: (22)

Mine is only an inch lower then turbo and uses a 90 at the pan., no issues.

Wicked69

I have a twin turbod chevelle also. I did -10's but used a 45 and a straight. I tried 90's but mine was backing up. Using the moroso pan this time and tapped the front of my timing chain cover in the bottom L and R hand corners with -10's and 45's. Ill update once I see how it does.

CameronVic

iTrader: (5)

i have a 90 and it's perfectly fine. The oil coming back from the turbo is not coming in like a firehose. And I only used a 3/8 npt male that I tapped the pan for.

toytech93

iTrader: (2)

Hey Wicked, would you be able to post a picture of that front cover drain setup ? I don't have the FEAD setup yet so i have no clue if i have the room there.