Razor

Trying to mount this unit up close to the firewall. Being able to tilt the *** end down will help with down pipe fabrication.

Has anyone mounted this unit at this angle (10°) or greater? Anything I can do to allow it to be tilted more?

Turbo is a BWS480 billet ETRHO 1.25 t4 race cover.


Thanks.

Forcefed86

iTrader: (4)

I think you'd be fine with 10*.

I read Garrett called out +/- 15* on most units.
Somewhere In the Maximum boost book I believe it indicated 30* was the max.

Razor

If I could do 30° and be good, that would be awesome.

I have read mention of the journal bearing turbos not taking as much of an angle as a ball bearing unit.

Still, I would like to hear someone with experience mounting a BW at an angle, how much of an angle, and if/how it affected its bearings.

Razor

Just found this on Garrett's site;

Quote:

Turbo tilted back on its axis past recommended 15°.

Basically I would need something like this but in 4". Or, have the down pipe pie cut to death..

Fat Jesus 808

iTrader: (5)

Tilting the turbo puts extra load on the thrust bearing in a JB setup. The BB units can take more angle as they handle the load better.

stevieturbo

I would highly doubt the concern is a bearing one.

But if it is tilted too far there is a likely hood of oil building up and bypassing the piston ring and causing a little smoking.

If you can live with that I wouldnt be too concerned

oscs

iTrader: (19)

This is what i was thinking. I was also under the impression it was a drain issue.

OP one of my JB turbos is tilted about 10 degrees and I have zero drain/smoking issues.

Razor

I am not concerned with oil drain. The turbo will have more than enough angle on the drain line to gravity evac and it is a -10 line. A little puff of smoke is a non issue for me as well.

I am just concerned about the bearings not liking the angle.

What is the maximum angle you think I could get away with and not have any adverse effects on turbo life? 30°?

cptinjak

Up to 30 degrees in either direction. That's the Borg specification.

Jack

oscs

iTrader: (19)

Regardless of how sharp your return hose angle is you will still lose a little bit of draining if the turbo isn't straight up and down. As minimal as it might be its still there. With my T/N turbos I believe 14* is the max allowed. I have -10 line with a 90 bend coming right off the bottom of the turbo. With that said I believe every specification has a little tolerance built in. So in my specific application I would not exceed 20*

If your turbo manufacturer says 30* is acceptable than go with 30* my .02 anyways.

Forcefed86

iTrader: (4)

-10AN line is on the small side in some cases. Esp. if the fitting ID isn’t a true -10. Check the actual drain port diameter on the turbo itself and ensure you don’t go smaller than that anywhere in the system. I believe BW suggests no smaller than a 19cm (3/4”!) ID drain. Copper tubing works well for this.

I’d be more than comfortable up to 30* assuming the drain is setup correctly.

oscs

iTrader: (19)

Good advice @ 30* angle

Razor

Good news.

Thank you.