converting an 05 automatic B5.5 tdi to 4motion

50harleyrider · Nov 3, 2018

Is this feasible? I have a complete 2002 B5.5 4motion with a bad V6 for all the parts. I assume I would have to source a Euro automatic 4motion BHW tdi tranny if one was ever offered. Hopefully Mike at TDtuning could get my ecu to work. My ecu has a stage 2 tdtuning tune.

Uberhare · Nov 3, 2018

Very doable, but as a manual. I am planning to convert a W8 4m to TDI 6 speed M/T. I have all the parts now, just need the time.

You will want to check what the ratio of your rear diff is and find a gearbox to match with TDI ratios.

50harleyrider · Nov 3, 2018

why only a manual? Was my hunch right that no 4motion euro tdi BHW automatics were offered over there?

bbob203 · Nov 4, 2018

I’m doing this swap with an automatic 5hp19fl with a center differential grafted onto it. You can also get a 2.5 TDI 5hp19fla from europe.

Uberhare · Nov 4, 2018

I just despise autotragics so I never explored the options

You will have to get a box with ratios to match the TCM or it will always be in limp mode.

MEgearhead · Nov 4, 2018

Interested in the "5hp19fl with a center differential grafted onto it." Is this a 5hp19fl with 5hp19fla rear section and gears, or another combination?

bbob203 · Nov 5, 2018

MEgearhead said:
Interested in the "5hp19fl with a center differential grafted onto it." Is this a 5hp19fl with 5hp19fla rear section and gears, or another combination?

According to the guy who built it it’s the input shaft from the FLA and the center diff from the FLA installed onto the FL using the TDI gears, case, valve body etc. Not sure if it’s actually going to work but no reason it won’t as it’s functionally and effectively the same as the FLA now.

otty · Nov 5, 2018

My Passat was a W8 auto and is now a TDI 6 speed manual. I know the engine and tranny came out of an Audi from Europe. I didn't do the swap but I don't think it was that difficult switching it over to a manual. Some issues fitting the third pedal but people here know how to do that already with all the regular auto to manual swaps happening.

bbob203 · Nov 5, 2018

otty said:
My Passat was a W8 auto and is now a TDI 6 speed manual. I know the engine and tranny came out of an Audi from Europe. I didn't do the swap but I don't think it was that difficult switching it over to a manual. Some issues fitting the third pedal but people here know how to do that already with all the regular auto to manual swaps happening.

I toyed with manual swap but since I found a basically brand new auto that will work I decided to go this route for now I’m ageing and an auto ain’t so bad after all.

50harleyrider · Nov 6, 2018

bbob203 said:
I’m doing this swap with an automatic 5hp19fl with a center differential grafted onto it. You can also get a 2.5 TDI 5hp19fla from europe.

The 5HP19FLA is a 4motion tranny that will bolt onto a BHW ie 2.5 tdi and BHW have the same bolt pattern? If so, just get Frans to source it for me along with the TCM?

Uberhare · Nov 6, 2018

Manual swap is easy with all the correct parts. I've done one in a day start to finish with just a few loose ends to finish up. Pedal is easy part.

JonnyObnoxious · Apr 19, 2019

Where did this go? I'm looking at a 04 V6 4mo wagon with a broken timing belt. Can what's the gearing difference? Can I swap the TDI into it? If so, what will be needed to swap?

converting an 05 automatic B5.5 tdi to 4motion

50harleyrider

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