Oil drain for twins
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Car: 86 IROC
Engine: Twin turbo L31 HSR
Transmission: 700R4 w ProBuilt
Axle/Gears: 9 bolt 4.11
Oil drain for twins
I was over in TallTims twin GT35 build asking about oil feed/drain lines as I'm in the middle of a similar build. I've figured out that I can use -4AN lines off a tee from the oil pressure fitting for the feeds. As for the drains, he used two -10AN lines into the fuel pump block off plate. I have a later ('96) block so no plate. Is the oil pan my only option? Can I run a y fitting into the pan from the two lines or will that back up? Or is there enough real estate to put two 1/2" holes above the drain plug. I'd prefer not to yank the motor but... Thanks.
Here's the work in progress:
Here's the work in progress:
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Car: 86 IROC
Engine: Twin turbo L31 HSR
Transmission: 700R4 w ProBuilt
Axle/Gears: 9 bolt 4.11
Re: Oil drain for twins
Thanks, So I'll scrap the idea of running a two into one y fitting into the oil pan. I can't see much room on the passenger side ( to get a drill in there) but on the drivers' side of the pan it looks OK. Maybe a 90 degree drill. Just drill, tap and thread a fitting in. Sorry, that's a question, I've tapped other thicker stuff before but nothing as thin as a pan.
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Car: 86 IROC
Engine: Twin turbo L31 HSR
Transmission: 700R4 w ProBuilt
Axle/Gears: 9 bolt 4.11
Re: Oil drain for twins
I like the welded fittings idea better but I take it that means pulling the pan...
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: Oil drain for twins
Self contained turbos would be cool. I guess the packaging would be difficult.
-- Joe
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Car: 86 IROC
Engine: Twin turbo L31 HSR
Transmission: 700R4 w ProBuilt
Axle/Gears: 9 bolt 4.11
Re: Oil drain for twins
So the consensus being drill and tap at your own risk. And don't complain when it leaks... For a car that gets so little mileage, I think I'll try that route for starters with the plan to put weld in bungs next time the engine comes out. And that'll be when I get brave and turn up the boost.
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: Oil drain for twins
So the consensus being drill and tap at your own risk. And don't complain when it leaks... For a car that gets so little mileage, I think I'll try that route for starters with the plan to put weld in bungs next time the engine comes out. And that'll be when I get brave and turn up the boost.
I used some 'right stuff' on the threads when inserting the NPT to -10 AN adapter.
I'm not that concerned about leaks as much as I am metal getting into the oil.
-- Joe
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Car: 86 IROC
Engine: Twin turbo L31 HSR
Transmission: 700R4 w ProBuilt
Axle/Gears: 9 bolt 4.11
Re: Oil drain for twins
Got it, thanks for the help guys. I'll figure out all the hose and fittings I need for the feed/drains,order that, then start working on the new manual brake setup.
Brian
Brian
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