CTD2500
Brown Between the Cheeks
- Joined
- Aug 3, 2013
- Messages
- 454
Hi, I just got a used GTA4202 in the mail today. It was a $175 ebay find.
Anyway, I tore it down. Other than having some fairly bad corrosion, the bearings were pretty tight. It turned fine. Wastegate actuator was rotted out, a few small cracks in the turbine housing. (1.15 gated)
Anyway, to the point. When I pulled the compressor cover off, this is what the wheel looked like:
Obvious machine marks of a billet wheel...? My other GTA4202 and 4294 are cast as seen here:
02 left, 94 right
I was unaware that Garrett offered the GTA4202 in a billet version. From my memory and photos, it *looks* pretty much identical in design. Can anyone confirm this? Is it an aftermarket wheel? On the back, there is a number stamped in it: GTA8059
The Detroit Diesel part number on the tag is: R423528059
I Googled that part number just now with no results.
The main question I have is:
Is this billet wheel better than the cast wheel? Does it flow more?
The cast 4202 is currently installed in my truck, is it worth the trouble of swapping it out for the billet?
Thanks guys
Anyway, I tore it down. Other than having some fairly bad corrosion, the bearings were pretty tight. It turned fine. Wastegate actuator was rotted out, a few small cracks in the turbine housing. (1.15 gated)
Anyway, to the point. When I pulled the compressor cover off, this is what the wheel looked like:
Obvious machine marks of a billet wheel...? My other GTA4202 and 4294 are cast as seen here:
02 left, 94 right
I was unaware that Garrett offered the GTA4202 in a billet version. From my memory and photos, it *looks* pretty much identical in design. Can anyone confirm this? Is it an aftermarket wheel? On the back, there is a number stamped in it: GTA8059
The Detroit Diesel part number on the tag is: R423528059
I Googled that part number just now with no results.
The main question I have is:
Is this billet wheel better than the cast wheel? Does it flow more?
The cast 4202 is currently installed in my truck, is it worth the trouble of swapping it out for the billet?
Thanks guys
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