Reece7brown
Member
Hi guys so I thought it would be cool to do a thread on a upgrading the standard M57 GT2260 turbo to a N57 GTB2260 turbo.
Car is a 2007 E90 330D (M57D30TU2).
The turbo wheel shattered under a long highway pull and blew the compressor housing to piecesView attachment 8
View attachment 9
The next step was deciding to go the turbo systems hybrid or standard gt2260. The car is a daily so the turbo systems didnt make sense as injectors and fuel pump would need to be upgraded plus the car having 220xxxkms. The gearbox would definitely not appreciate it. The owner wanted a bit more kick so going standard GT2260 also didnt make sense. So along came the idea of fitting a GTB2260. The sizes of the wheels are identical however the GTB has better flowing vanes so it doesnt choke the exhaust side as easily as a GT does.
Although they very similar turbos they are so different in the way they mount and all the plumbing that goes with it. The V band flanges on the GTB are smaller than the GT measurments
GTB exhaust housing measurement View attachment 1
Instead of trying to change the exhaust manifold and downpipe to fit the GTB exhaust housing. I just swapped over the housings from the GT onto the GTB so we can retain the original manifold and downpipe as well as the mounting points.
Next was sending the GTB to Gabby from Fastec for a bigger compressor wheel and to balance and machine the housing.
We went for a 65 wheel which we got from Stallion turbos
View attachment 2View attachment 3View attachment 4
We had to machine the intake housing down and also fit a 57mm barb on the outlet as we upgraded all the boost line also. I wanted to use the standard air filter and maf setup so modding the inlet pipe was needed. The standard slip on design is rather silly in my mind so I would have changed it either way. I fitted a 63mm silicone hose with clamps so it has a perfect fit and seal. No more paying stupid amounts for silly bmw seals. View attachment 7
The power steering pump line was in the way so we had to move it in order to run our boost lineView attachment 6
We also had to have a new oil feed line made up and modify the oil return feed.
While we were doing boost lines we decided to do a race pipe and egr delete. Thanks to Nikky from MRP motorsport for the fab work.
View attachment 6
View attachment 8
View attachment 1
I wrapped the one part on the exhaust header as it was around 50mm from the actuator so I didnt want any excess heat on the actuator as it has plastic gears inside.
View attachment 9
New gaskets were fitted all round as well as new nuts.
Will get to the dyno and see what she is pushing. Feels very strong on the road and the sound she makes is great
Car is a 2007 E90 330D (M57D30TU2).
The turbo wheel shattered under a long highway pull and blew the compressor housing to piecesView attachment 8
View attachment 9
The next step was deciding to go the turbo systems hybrid or standard gt2260. The car is a daily so the turbo systems didnt make sense as injectors and fuel pump would need to be upgraded plus the car having 220xxxkms. The gearbox would definitely not appreciate it. The owner wanted a bit more kick so going standard GT2260 also didnt make sense. So along came the idea of fitting a GTB2260. The sizes of the wheels are identical however the GTB has better flowing vanes so it doesnt choke the exhaust side as easily as a GT does.
Although they very similar turbos they are so different in the way they mount and all the plumbing that goes with it. The V band flanges on the GTB are smaller than the GT measurments
GTB exhaust housing measurement View attachment 1
Instead of trying to change the exhaust manifold and downpipe to fit the GTB exhaust housing. I just swapped over the housings from the GT onto the GTB so we can retain the original manifold and downpipe as well as the mounting points.
Next was sending the GTB to Gabby from Fastec for a bigger compressor wheel and to balance and machine the housing.
We went for a 65 wheel which we got from Stallion turbos
View attachment 2View attachment 3View attachment 4
We had to machine the intake housing down and also fit a 57mm barb on the outlet as we upgraded all the boost line also. I wanted to use the standard air filter and maf setup so modding the inlet pipe was needed. The standard slip on design is rather silly in my mind so I would have changed it either way. I fitted a 63mm silicone hose with clamps so it has a perfect fit and seal. No more paying stupid amounts for silly bmw seals. View attachment 7
The power steering pump line was in the way so we had to move it in order to run our boost lineView attachment 6
We also had to have a new oil feed line made up and modify the oil return feed.
While we were doing boost lines we decided to do a race pipe and egr delete. Thanks to Nikky from MRP motorsport for the fab work.
View attachment 6
View attachment 8
View attachment 1
I wrapped the one part on the exhaust header as it was around 50mm from the actuator so I didnt want any excess heat on the actuator as it has plastic gears inside.
View attachment 9
New gaskets were fitted all round as well as new nuts.
Will get to the dyno and see what she is pushing. Feels very strong on the road and the sound she makes is great
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