GTB1756vk in BV43 housing

duke21

Veteran Member
Joined
Jun 26, 2013
Location
Croatia
TDI
2.0 TDI BMN
I would only swap exhaust manifolds. So can i take BV43's exhaust housing from CR110/136/140/143 engines and fit GTB1756 core inside. Or if this does not work, can i take exhaust housing of GT1749vc?
 

duke21

Veteran Member
Joined
Jun 26, 2013
Location
Croatia
TDI
2.0 TDI BMN
Ok maybe mixing KKK housing and Garrett turbo doesnt work, but should 1749's housing with 1756...
 

shanky887614

Active member
Joined
Apr 29, 2017
Location
uk
TDI
vw caddy arl
wouldnt work.

the gt1749 and the gtb's have completly different internals.


the gtbs have a nozzle cage that is what is machined to fit the exhaust housing.



the gt1749 exhaust housing is machined to fit the exhaust wheel

Sent from my ASUS_X00ID using Tapatalk
 

Bambaataa

Veteran Member
Joined
Mar 2, 2012
Location
KW, On
TDI
06 Jetta BRM 6MT; '15 Golf Sportwagen TDI GSW
I believe this has already been done by someone here...

 

Bambaataa

Veteran Member
Joined
Mar 2, 2012
Location
KW, On
TDI
06 Jetta BRM 6MT; '15 Golf Sportwagen TDI GSW
Image i posted is a 1756 in a 1749 exhaust manifold. I don't know of a BV43
 

adamss24

Veteran Member
Joined
Nov 2, 2005
Location
Great Britain
TDI
audi a4 2.5 tdi 98 quatrro 6speed
Gtb1749vc turbochargers are not easy to find, you better off with a gtb style log manifold made out of 3mm stainless steel bends...
 

turbobrick240

Top Post Dawg
Joined
Nov 18, 2014
Location
maine
TDI
2011 vw golf tdi(gone to greener pastures), 2001 ford f250 powerstroke
Maybe a bv43d would fit the bv43a/bv43b exhaust housing.
 

duke21

Veteran Member
Joined
Jun 26, 2013
Location
Croatia
TDI
2.0 TDI BMN
I dont believe in custom made exhaust manifolds any more, that is the reason to try have stock one. Minimal chances for leaks and cracks...
 

Yucca

Veteran Member
Joined
Apr 13, 2007
Location
Finland
TDI
ALH 388bhp, Polo 6R 2.0TDI CR GTC1752VZ
I think GTB1756VK fit also to GT(B)1646V manifold...

GT1749VC is 16V manifold so 1646V is way to go if you need 8V manifold.
 

duke21

Veteran Member
Joined
Jun 26, 2013
Location
Croatia
TDI
2.0 TDI BMN
i suppose i cannot use BKD's gt1749va's exhaust housing on BMN engine (turbo positioned up side). Bolt pattern seems ok...
 

majesty78

Veteran Member
Joined
Dec 7, 2007
Location
Austria/ Europe
TDI
Skoda Superb 3T5 CFFB
No, wont work. Bolt pattern is asymetric, so you cant flip around.

If you have BMN engine, you have GT1749VC turbo which is Gen 3 VNT with seperate nozzle cage like on GT1756VK.

Bad thing about it: You cant use the 1756VK because the VNT lever arm is on the wrong side, so you would need to swap over all the 1756 internals to the 1749 CHRA and have the turbo balanced and afterwards VNT calibrated.

Aslo the 1756 is not the biggest possible GTB17 turbine.

But on the other hand, those BMN engines are not the best for tuning anyway. Way to much problems with Siemens PPD injectors...
 
Last edited:
Top