BHW to BEW VNT-17 Compressor Housing Interchangeability

[PradoTDI]

Does anyone know if the compressor housing from a VNT-17 BEW turbo would fit on a GT1749va from a BHW? I have a 1749 on my ALH, but the compressor outlet is not in an ideal location and the 90º turn on the BEW compressor housing would be perfect.

 

[adamss24]

In theory yes, however there are a few variations on trim on the compressor wheels, best to measure with a micrometer to make sure !

 

[PradoTDI]

Good to know. Looks like I’ll have to read up on turbo measurements and keep an eye out for an old BEW turbo to scavenge parts from!

 

[turbocharged798]

A BEW turbo is NOT a VNT17.

 

[PradoTDI]

A BEW turbo is NOT a VNT17.

I've just been doing some reading about the different turbos and came across that fact. Looks like the BEW came with a BW KP39, which has a smaller compressor wheel and a different style of attaching the compressor housing. VNT-17's are available as an upgrade for the BEW, but from what I can tell they are the GT1749vb, which has a slightly larger compressor wheel than my GT1749va and therefore aren't interchangeable. Apparently the European PD130 turbo is a va, and should have the same compressor dimensions as mine with the right angle compressor outlet I need. The difficult part is finding one available in North America for a reasonable price!

 

[turbocharged798]

Correct, BEW comes with a Borg-Warner KP39 which is totally different from the Garrett VNT17. Not even close to the same.