Does anyone know how hard it is to rebuild an Greddy 18g. feels like bearings are lose and turbines show signs of wear. how hard is ti to rebuild these. is this something you would reccomend to diy or send to a shop?

 

I'm not mechanically inclined so I had mine rebuilt professionally, cost was $585 for both turbos.

 

where did you get them done at?

 

There's a shop in Kent, WA called Alamo turbocharger that does rebuilds. If you just have the center sections rebuilt it's about $295 each. If you can wiggle the compressor wheel far enough out to contact the compressor housing then the journal bearings are defiantly shot. It should have some movement, because there's a .002 gap between the turbine shaft and the bearings. This gap is usually filled with oil during engine operation, so the shaft doesn't really move while it's in operation. But while the turbo's are off the car the wheels should move a little bit.

 

But should the bolts holding the wheels on have any movement?

 

Your turbo compressor and turbine wheel look like this inside your turbo



there's a solid shaft that runs the length of the turbo and the wheel on the hot side is connected to it. on the cold side, the compressor wheel slides over the top and bolts to the other end of the shaft. when you wiggle one side or the other with your finger it'll move the whole shaft inside. So there isn't any bolts on the wheels themselves.

He's a breakdown of just the turbine wheel itself



In the first picture you can see the orange journal bearings on the shaft, those are where the shaft 'play' comes from. if the nut on the end of the shaft is loose, that's a different story entirely. But yes, the 'bolt' on the cold side should move a little bit from side to side and about ~.003" in and out. It should however feel completely solid with the wheel assembly. They shouldn't move independently from eachother.

 

Greddy's Headquarters here in California.

 

Did they redo everything or just part?

 

They replaced the majority of the items that comes in the rebuild kits.

 

How can I get in touch with them?

 

I was on there website and couldn't find it.

 

This website? http://www.greddy.com/contact/. Their number is on there.

 

Oh. I thought I had to look for service or something