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View Full Version : mount gt28 upside down (oil feed concern)?


kroos268
09-07-2009, 08:05 AM
I will mount my gt28 upside down, that is below the manifold rather than above.

I have inferred that the oil drain is the 2-bolt flange, and that the oil feed is the 1/8 NPT thread.

So then, this would place my oil feed on the bottom and return on the top!

I plan to reverse the connections so that oil feed is on TOP, ensuring proper amount of oil held in turbo. I have a 2-bolt flange with pin hole oil restrictor to make this happen.

Is this non-sense? Does it even matter?

thanks

steve

japslapsilvia
09-07-2009, 09:56 AM
WHAT?? are u doing a bottom mount?? kinda like how most t-28 are mounted??

in anycase you can clock the center section it will spin around 360*. so u can have the drain on the bottom and feed on top, regardless how the turbo is mounted

jspaeth
09-07-2009, 10:11 AM
WHAT?? are u doing a bottom mount?? kinda like how most t-28 are mounted??

in anycase you can clock the center section it will spin around 360*. so u can have the drain on the bottom and feed on top, regardless how the turbo is mounted

Hahaha yea I am confused......it is supposed to go on the bottom of the manifold!

bejota180sx
09-07-2009, 10:38 AM
i think they were trying to state that it's going on a bottom mount setup not a top mount... i THINK...

and just like JAPSLAPSILVIA stated... you dont reverse the connections... you clock it so it fits/sits where you want it to, search around for turbo reclocking or something similar to that...

japslapsilvia
09-07-2009, 12:35 PM
i think they were trying to state that it's going on a bottom mount setup not a top mount... i THINK...

and just like JAPSLAPSILVIA stated... you dont reverse the connections... you clock it so it fits/sits where you want it to, search around for turbo reclocking or something similar to that...


EDIT: i forgot to say that, i dont think where the inlet/drain are located really matters... oil system is a pressurized system, kinda like you can put a oil filter relocation any where and it won't matter (Even upside down... From what ive been told)

TurboByGarrett.com - Turbo System Optimization (http://www.turbobygarrett.com/turbobygarrett/tech_center/turbo_optimization.html#Oil%20Supply%20&%20Drain)



Oil Drain
In general, the larger the oil drain, the better. However, a -10AN is typically sufficient
for proper oil drainage, but try not to have an inner diameter smaller than the drain hole
in the housing as this will likely cause the oil to back up in the center housing. Speaking
of oil backing up in the center housing, a gravity feed needs to be just that! The oil
outlet should follow the direction of gravity +/-35° when installed in the vehicle on level
ground. If a gravity feed is not possible, a scavenge pump should be used to insure that
oil flows freely away from the center housing.


Avoid:

Undulations in the line or extended lengths parallel to the ground
Draining into oil pan below oil level
Dead heading into a component behind the oil pan
Area behind the oil pan (windage tray window) where oil sling occurs from crankshaft
When installing your turbocharger, insure that the turbocharger axis of rotation is parallel
to the level ground within +/- 15°. This means that the oil inlet/outlet should be within
15° of being perpendicular to level ground

Dousan_PG
09-07-2009, 01:27 PM
haha seriously?
wow
reclock it
done.

brewster240
09-07-2009, 02:05 PM
EDIT: i forgot to say that, i dont think where the inlet/drain are located really matters... oil system is a pressurized system, kinda like you can put a oil filter relocation any where and it won't matter (Even upside down... From what ive been told)

please re-edit that out, cause its completely wrong.

bejota180sx
09-07-2009, 03:37 PM
eliminated my error... sorry bout that...

Def
09-07-2009, 04:57 PM
Sounds like you're trying to feed oil through the oil drain in the CHRA...

Reclock the turbo so you're feeding through the feed and draining through the drain(duh).

waynehead05
09-09-2009, 11:13 PM
http://i14.photobucket.com/albums/a335/waynehead05/Funny/c66891a5.gif

fliprayzin240sx
09-10-2009, 08:14 AM
Wow...just wow...Oil feed is always on top and oil drain (gravity drained) is always on the bottom for that reason.

burnsauto
09-10-2009, 08:49 AM
someone do it upside down, i'd love to see the plumbing for the return line.

..plus im curious as to how long the turbo would last. (not saying it would fall short, but if it did..when would it)