Turbo coolant bolt

[JD7]

Does the orientation of the coolant bolts with the holes in them matter? If oriented strait up and down it isnt tight enough and leaks.

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[19Eclipse90]

Orientation is much less important than new crush washers and torquing to the proper specification.

 

[Adam]

No. Its a banjo bolt. That's how its made. Just make sure its tight but don't over tighten it. And like was said, new crush washers are always good if yours are showing signs or wear.

 

[steve]

It doesn't matter because the other half of the fitting has a channel that wraps around the bolt that the fluid passes through. The crush washers seal the bolt head to the fitting and whatever it's being bolted to like the turbo or a brake caliper.

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[JD7]

Thanks everyone, the washers looked good when off so I didn’t replace them. She’s up and running now.

 

[DSMPT]

Those are crush washers, so just replace them with new. New washers will stop the leak. Don't try to over tighten the banjo bolt to stop the leak. You may end up snapping the bolt.

 

[motomattx]

To add to this, Garrett actually recommends that the turbo be tilted slightly on liquid cooled turbo's so that thermal siphoning can happen after turning off the engine, this prevents coking in the chra from heat buildup after the engine is no longer supplying coolant or oil to the turbo.

Water Cooling For Your Turbo

Water-cooling improves mechanical durability and lengthens the turbocharger’s life. Garrett GTX and G Series ball bearing turbos are designed to be cooled

www.garrettmotion.com

 

[pauleyman]

Thanks everyone, the washers looked good when off so I didn’t replace them. She’s up and running now.

Visual inspection of washers doesn't cut it. They can harden. If you develop leaks just replace them. They're super cheap. Cheap enough I keep an assortment handy.

 

[motomattx]

The real problem with those washers is that they crush, just like a head gasket does and they are single use for the same reason that a head gasket is.