best place for turbo oil return line
09-05-2012, 01:54 PM
#23
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nice, been considering this instead returning my oil in the valve cover via the STS style return. does it matter exactly where on the oil pan as long as its above the oil level in the pan? been thinking right over the drain bolt.
09-11-2012, 09:18 AM
#26
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i did alittle research and heres what i found, i actually thank you cause i anwsered my own question lol
The correct bit for any tap should be 90% of the tap size.
NPT requires an 50% increase adjustment since it is measured differently than drill bits.
Therefore, 1/2 * 1.5 (50% increase) = 0.75
0.75 * 90% (tap to drill bit conversion factor) = 0.675
Drill bit sizes in that range
21/32 = 0.6563
11/16 = 0.6875
23/32 = 0.7188
11/16 is the closest and the correct size for that tap.
1/2” NPT is compatible with up to –10 AN (5/8” hard line)
heres a link for aeromotive explaining it alot better then i ever could.
http://aeromotiveinc.com/2010/01/an-vs-npt/
the reason i use the 1/2 NPT cause usually thats what is on a 10an fitting thats used on non AN parts, other then welding of course lol so if you get a 1/2 to 10an adaptor fitting, BAM!!! you got yourself a fitting to go in you oil pan, which is what im going with
The correct bit for any tap should be 90% of the tap size.
NPT requires an 50% increase adjustment since it is measured differently than drill bits.
Therefore, 1/2 * 1.5 (50% increase) = 0.75
0.75 * 90% (tap to drill bit conversion factor) = 0.675
Drill bit sizes in that range
21/32 = 0.6563
11/16 = 0.6875
23/32 = 0.7188
11/16 is the closest and the correct size for that tap.
1/2” NPT is compatible with up to –10 AN (5/8” hard line)
heres a link for aeromotive explaining it alot better then i ever could.
http://aeromotiveinc.com/2010/01/an-vs-npt/
the reason i use the 1/2 NPT cause usually thats what is on a 10an fitting thats used on non AN parts, other then welding of course lol so if you get a 1/2 to 10an adaptor fitting, BAM!!! you got yourself a fitting to go in you oil pan, which is what im going with
Last edited by JoshuaGrooms83; 09-11-2012 at 09:42 AM.
10-25-2015, 04:35 PM
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10-25-2015, 04:37 PM
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09-20-2016, 12:21 PM
#34
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Old thread I know.
I'm using a -10 bung welded to the timing cover at the passenger side about 7 o'clock. Also using a truck pulley since my only accessory is a low mount drivers side alternator. My turbo is mounted high on the passenger side. Question is for guys with similarly located oil return locations, are you using a 90 or a 45 coming out of the timing cover? Any issues with a 90 in that location?
I'm using a -10 bung welded to the timing cover at the passenger side about 7 o'clock. Also using a truck pulley since my only accessory is a low mount drivers side alternator. My turbo is mounted high on the passenger side. Question is for guys with similarly located oil return locations, are you using a 90 or a 45 coming out of the timing cover? Any issues with a 90 in that location?
