Turbo angle

[FST4RD]

What is the maximum you would want to tip a turbo up at the front with out having oil issues or any other issues for that matter? Would 45 degrees be too much?
I did see a turbo mounted 90 degrees pointing straight up once, but I assume they had done something to combat the potential oil issues.

[siren676]

Usually you'll have to rotate the core of the turbo so the oil drain is around 0-15° from vertical so that it can freely flow down to the sump

[RS13]

Some turbos (aircraft turbochargers, Subaru WRC cars I think as well) are designed with their own oil reservoir so that they can be mounted with the shaft vertical. However, I believe the rule of thumb with 99% of automotive turbos is that the oil drain needs to be within 35° of vertical, otherwise you run into flow (lubrication and heat) and internal leakage issues. What did you have in mind?

[FST4RD]

In the Starion the turbo sits quite a bit forward of the firewall, and the firewall has a decent recess in it.
I was thinking I could make up an adapter to tilt the turbo up at the front which would allow me to run a straight pipe off the back of the turbo. Then once its under the floor pan, a 45 degree bend toward the back of the car. Then I could do away with the downpipe all together.
Cars going to be a track car, so kinda want things as simple and straight forward as possible.
I might even be able to get away with slightly less angle.

[RS13]

Cool idea. Could you mount the turbo lower to reduce the angle? Would you run a flexi? You'd probably be best asking a turbo specialist for clarification.

[FST4RD]

Cool idea. Could you mount the turbo lower to reduce the angle? Would you run a flexi? You'd probably be best asking a turbo specialist for clarification.

Yeah I would run a flexi, and I could get a low mount manifold, never thought about that.

[Akane]

Garrett recommends 20degree on each side being the maximum allowed.

http://www.turbobygarrett.com/turbobyga ... ooling.pdf

[evil_si]

Akane that particular link is referring to optimium setup of watercooling lines. And is talking about 20' core rotation on the water outlet side,

Garrett had another write up on oil feed and drain angles which i cant find

[Akane]

I can't find it neither
I do recall it's either 15 degrees +/- or 20...

[DexGT]

I'm also pretty sure it's 15 deg as I remember reading it on the install sheet on my GTX turbo.
The exhaust seal is just a labyrinth type so if you tip the turbo far enough you will submerge it and have a very smokey car.
It sounds like it would be easier to just put a 45 bend off the turbo ,than making the adapter to tilt the turbo .

[FST4RD]

Cool. It was just an idea, I was looking in the engine bay and thought about it.
Plus if possible it would be the least restrictive exhaust as well.
I could probably run a 45 from the turbo with another 45 under the floor, a few mufflers or what have you and the I want it to exit just in front of the rear wheel.
From what I've read and talked to wof guys, as long as the exhaust exits behind the most rear seat it's fine, being the car only has the front seats this will be good. Plus then I don't have to worry about going up and over things at the back of the car.

[GDII]

Do you mean door rather than seat? Either way you can do that with your car but some cars are 4 door and even if it only has 2 front seats the back of the rear doors are above the rear wheels. That means the exhaust would have to exit behind the wheels.

[Stott69]

Weld rear doors, problem fixed?

[FST4RD]

It's 2 door and 2 seat, and there is a decent gap back to the wheels, so either way I should be fine.

[cat007]

Put it any angle you like - just use of these:

http://www.ebay.com/itm/NEW-Electric-Oi ... 0782665954

[FST4RD]

Seems to good to be true... so you could just run a feed from the sump as well as a return and then run your turbo with the intake pointing straight up. That way you could face the exit of the intake housing straight at the intercooler removing the need for a 90° bend...

[Bling]

Less chance a 90° bend is going to fail on you down the track though