Compound 3.0TDI

[v8 coupe]

I am trying to plan my 3.0TDI swap and I want both power and mileage.

I have a 10' Touareg 3.0TDI from Canada. The engine has 200k on it so I was going to do all the maintenance on it and upgrades now. I was planning on going bigger turbo, but I very much love the 3.0bitdi power levels.

Could I swap an upgraded 3.0bitdi turbo setup onto an upgraded 3.0TDI?

I was not planning on keeping the CP4 pump, EGR, or DPF on the engine. I do already plan on head studs, main studs, and rod bolts along with injectors and CP3 pump conversion. I also want a flash tunable ECU so was looking at early B8 harness and ECU. This is going in a early manual B8 Coupe for reference.

I'm looking at a "500hp" hybrid turbo upgrade for the 3.0bitdi. Dynos show 450-510hp with over 800+nm (590ft-lbs) at 2.2k - 4.2k. That sounds great to replace the old tired v8.

 

[Freakoboost1]

Following

 

[adamss24]

I wonder why ? Single turbo push power over 450 bhp with stock like response…the v6 tdi is perfect displacement for driving big turbos !
Even the gtb2260vk based hybrids work well on them big torque lumps and they have gearboxes able to take the bump in power !

 

[v8 coupe]

I wonder why ? Single turbo push power over 450 bhp with stock like response…the v6 tdi is perfect displacement for driving big turbos !
Even the gtb2260vk based hybrids work well on them big torque lumps and they have gearboxes able to take the bump in power !

The gtd2263vz is only capable of ~350-400hp and ~550-580ft-lbs to get more than that requires a step up to the GTD2872VRK which does have a reduction in low rpm torque. I'm also swapping to a European TDI 6-speed manual so it is geared so 60mph (my normal cruise limits) would be ~1700rpm. So I would like torque in that region which a big single does lack.

I'm not really looking to reinvent the wheel here just wondering if the 3.0BiTDI upgrade turbos could be put on a standard CAPA 3.0TDI. I have tried Google, and such with not much luck. I have already looked into compounds for my tow vehicle, an 08 6.7L Cummins Ram3500 C&C 6-speed manual, and just looks like the best option for it's purpose. I am looking for a more performance based setup on my S5 3.0TDI. 450hp seems to be the limit before you have to look at huge singles with a match in lag and compromised low and torque.

 

[adamss24]

The gtd2263vz is only capable of ~350-400hp and ~550-580ft-lbs to get more than that requires a step up to the GTD2872VRK which does have a reduction in low rpm torque. I'm also swapping to a European TDI 6-speed manual so it is geared so 60mph (my normal cruise limits) would be ~1700rpm. So I would like torque in that region which a big single does lack.

I'm not really looking to reinvent the wheel here just wondering if the 3.0BiTDI upgrade turbos could be put on a standard CAPA 3.0TDI. I have tried Google, and such with not much luck. I have already looked into compounds for my tow vehicle, an 08 6.7L Cummins Ram3500 C&C 6-speed manual, and just looks like the best option for it's purpose. I am looking for a more performance based setup on my S5 3.0TDI. 450hp seems to be the limit before you have to look at huge singles with a match in lag and compromised low and torque.

After taking a drive In a couple of v6 tdi with hybrid gtb2260vk and even taking a passenger ride in bobbys a4 I can tell you that an s300v with the right mapping is mental !
500-600 bhp is a fricking lot of power in any car (regardless if diesel or petrol) and the 1/4 mile times/terminal speed prove it as well !
Compounds can be made to work well (not entirely sure the edc16 can handle it but edc 17 can for sure) but they are a pain to dial in properly ! While you are keen on the factory setup, it comes with a few bypass flaps and valves which might be difficult to make work on early engine setups…

 

[v8 coupe]

I am not fixed on any particular ECU I know the C7 had the 3.0BiTDI. I don't know how easy that would be to integrate into an early B8, but I suspect it won't be that hard. I am sure a big single is a blast, just isn't quite what I am looking for.

I've had this debate for a while on my Cummins Truck. After going for several long runs in trucks similar to mine setup in a variety of ways. I just really love the way compounds respond. I've got gas cars for my big lag thrills, I'm looking for that economical fun. I feel compounds are a good way to achieve that. I'm putting this in a Sports Coupe I intend to daily in summer. The tuning will probably take a while I'm sure, but Rome wasn't built in a day.

 

[adamss24]

I am on the principle Kiss (keep it simple, stupid !), with the way component protection works nowadays it will be many summers before you get reliable power out of your a5 !
Compound da are nice when are tried and tested, mapping them right is another kettle of fish ! Good luck with your project and keep us updated ! However the gtd2060vz will make a good Hp turbo in a compound setup ! Add an s300v and have your cake and eat-it !

 

[The Jargen]

The BI-TDI swap into an Audi A4 B8 has already been done before. That should be your starting point.

 

[v8 coupe]

I am on the principle Kiss (keep it simple, stupid !), with the way component protection works nowadays it will be many summers before you get reliable power out of your a5 !
Compound da are nice when are tried and tested, mapping them right is another kettle of fish ! Good luck with your project and keep us updated ! However the gtd2060vz will make a good Hp turbo in a compound setup ! Add an s300v and have your cake and eat-it !

I'm trying to for go the experimental portion by just getting a pre-made setup for what my goal is for the car. I am swapping an S5 to diesel so it is sort of plug and play, but at the same time still not.

Currently the car has a damaged 4.2L V8 FSI 6-speed manual in it with 230k on it. The engine needs and pain reseal which means changing the chains for the timing. The clutch is also about due. I want at least 400hp for it's replacement.

Yes a GTD2872VRK could do that. I was already planning hardware upgrades in the form of main studs, rod bolts, and head studs. I was also planning to CP3 convert it as I did on my Jetta Sportwagen TDI. I am currently planning to use a 6.7L Cummins pump as the basis of my conversion, because I have one here available for mock up and know where to get a 750hp capable unit for reasonable price. Now I'm sure that is over kill for the V6 since that's 750HP in a truck so well over double the torque possible from the 3.0TDI at the same boost to displacement ratio.

I'm trying to get info on if the engines are close enough to be compatible from a hardware standpoint. I'm sure tuning is all dependant on what ECU I go with. I am not using the current Touareg ECU as it is not port tunable. I like what I'm seeing for results on the 3.0bitdi. Running the turbo I'm looking at it's like 600ft-lbs+ from like 1800-2600 and over 450hp. Now I might have to compromise a little since the 3.0TDI is slightly higher compression than the 3.0bitdi by .8:1, but I can deal with that.

 

[altz1]

Swap in a 4.2tdi with hybrids. Can make 500 all day long.

 

[Scott_DeWitt]

It's likely easier just to transplant the entire engine. Looking at the parts catalog, lots of part numbers are different.

 

[altz1]

Thats what i suggest. 4.2tdi engine and hybrids.

 

[Scott_DeWitt]

Thats what i suggest. 4.2tdi engine and hybrids.

V8 Coupe likes dong things the difficult way.

 

[v8 coupe]

I was looking for info on how they were different or the same, the 3.0TDI and 3.0BiTDI.

I did tried lots of Google searches and other sources before asking here. After I've Watched many videos by tuners explaining some of tuning stuff I don't know if it's worth it.

Now I do not know if this is correct or accurate but what I found. The system sounds like it starts out as a typical compound turbo setup. Exhaust goes out of the engine into the small turbo which is a VNT. Goes from there to the big turbo which is a WG turbo. The intake goes in big turbo then the small. There is a bypass valve between the cold stages. It sounds like after a certain point the smaller turbo is semi bypassed making it a big single up top.

To me that sounds like a mess to start with. I like compounds I just don't see a good option right now. I'll just go with the GTD2263VZ to start with a sorted 3.0TDI.

The 4.2TDI does look very enticing, they just aren't readily available here. Maybe some day I'll import one, but for now a 3.0TDI is what I've got.

 

[altz1]

I have one extra slightly used GTD2263vzk if you want. Location is eastern EU but can ship worldwide.

 

[adamss24]

Hi, how much you want for The gtd2063vzk please ? Regards
Chris

 

[altz1]

Hi, how much you want for The gtd2063vzk please ? Regards
Chris

Mine? I sold both of my gtd2263vzk.

 

[adamss24]

Mine? I sold both of my gtd2263vzk.

Thanks for replying ! Cheers !

 

[The Jargen]

Looks like someone has done a compound build:

 

[yrktreg]

Wonder what kind of power the compound kit makes, video is cool but lacking

 

[v8 coupe]

Looks like someone has done a compound build:

Interesting

Basically what I am looking to do is something similar to what is available for my Dodge Ram with the 6.7L Cummins an add a turbo kit. Basically it takes a bone stock 6.7L cummins with it's stock HE351ve VGT turbo and stacks an S475 or S480 on that. Fueling mods are recommended to enhance this kit, but stock Fueling can be uses.

Looking at the 3.0biTDI upgrade kits it looks like the small turbo is a gtb1752-2056 with a 60-64mm gt30 on top. I feel something like the GTD2056 or Gtd2060vz would be a good starting point and go from there.

Compound turbo Diesel trucks are what got me into these. The way they just pull so much smoother than a same power single turbo truck is wonderful. I want similar more of a linear surge of power from a broad torque curve. Ultimately I feel that the low pressure, or big turbo in this would Ultimately be wg controlled with electrical or analog controls.

 

[diffas]

Just use stock gtb2260vk or gtb2260vz and add bigger on top of that. LP needs to be quite a big. Minimum g35-900 or even better g40-900

 

[v8 coupe]

Just use stock gtb2260vk or gtb2260vz and add bigger on top of that. LP needs to be quite a big. Minimum g35-900 or even better g40-900

My thoughts exactly basically. The only thing I might add is and inter-stage cooler but thats just extra work.

 

[yrktreg]

Interesting

Basically what I am looking to do is something similar to what is available for my Dodge Ram with the 6.7L Cummins an add a turbo kit. Basically it takes a bone stock 6.7L cummins with it's stock HE351ve VGT turbo and stacks an S475 or S480 on that. Fueling mods are recommended to enhance this kit, but stock Fueling can be uses.

Looking at the 3.0biTDI upgrade kits it looks like the small turbo is a gtb1752-2056 with a 60-64mm gt30 on top. I feel something like the GTD2056 or Gtd2060vz would be a good starting point and go from there.

Compound turbo Diesel trucks are what got me into these. The way they just pull so much smoother than a same power single turbo truck is wonderful. I want similar more of a linear surge of power from a broad torque curve. Ultimately I feel that the low pressure, or big turbo in this would Ultimately be wg controlled with electrical or analog controls.

The BiTDi HP turbo is either a GTB or GTD1746 depending on when it was made, and the LP turbo is a GT3067R.

Lots of room for upgrades to both of those should you want to stick with the compact factory setup.

The turbine bypass from HP to LP is WG controlled, as is the WG on the LP turbo. Just the HP turbo is VGT controlled.

I'm thinking you should be able to shoehorn in a GTD1756 for HP, and G30-770 or mayyyyyyybe a 900 for the LP.

 

[v8 coupe]

The BiTDi HP turbo is either a GTB or GTD1746 depending on when it was made, and the LP turbo is a GT3067R.

Lots of room for upgrades to both of those should you want to stick with the compact factory setup.

The turbine bypass from HP to LP is WG controlled, as is the WG on the LP turbo. Just the HP turbo is VGT controlled.

I'm thinking you should be able to shoehorn in a GTD1756 for HP, and G30-770 or mayyyyyyybe a 900 for the LP.

My current idea is something like a gtd2056 as the small or high pressure turbo with like a G35-900 as the big or low pressure turbo. Wg control on the big turbo and a wg as a high Pressure turbo bypass to maintain emps.