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vw caddy 1.9 tdi bsu engine - What post can be used instead of bsu?

straznik55 14256 11
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  • #1 17001979
    straznik55
    Level 2  
    Posts: 4
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    Board Language: polish
    Hello
    I am looking for some information what kind of replacement engine (pillar) can I use instead of BSU? The car is Vw caddy 2008 1.9 tdi.
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  • #2 17002483
    Piasek80
    Level 31  
    Posts: 1845
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    What happened there with the wonderful junkvagen? The crank came out sideways?
    They fit BLS, BMT, BXE interchangeably
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  • #3 17003108
    straznik55
    Level 2  
    Posts: 4
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    Board Language: polish
    The crank didn't come out, it just knocks.
    He receives contradictory information, the internet "Fachman" claims that only BLS is perfectly replaceable ....
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  • #4 17003563
    Piasek80
    Level 31  
    Posts: 1845
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    When it knocks, replace the bushings, crank, grind the shaft as required - what is the cost of packing such costs as engine replacement.
    BKC, BXE and BLS are exactly the same engine: they differ only in the accessories and the models in which it was used.
    Post and head one iota. Basically, the differences are only between the blocks because the heads are identical to the Axx series.
  • #5 17003637
    straznik55
    Level 2  
    Posts: 4
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    Board Language: polish
    My head hurts from reading stupid things about shells with or without locks ... I'm a motorcycle mechanic and I don't know the cult "tdi" hehe
    I know one thing, this is a consequence of the vw service plan to change the oil every 30 thousand. I just want to repair my father's car wisely and I am inclined to grind and replace the bushings that are currently available for this engine in high quality. I'm not alpha and omega in this subject and I would like to read the opinions of wise people.
  • #6 17003699
    kakibara
    Level 35  
    Posts: 2373
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    Then go to the vw forum and check which model was dpefek and which was not.
    On the forum, if you search well, you will find a gentleman who inserts ax ... Instead of bls .... read convert - maybe you will spend something more, but for years, not six months.
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    #7 17004466
    Piasek80
    Level 31  
    Posts: 1845
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    There is no rule for this: BLS in Skoda had DPFs in Caddy for the Polish market - no.
    If the engine is still the whole thing, do only as much as you need to: dismantle and replace the set of bushings, surely and the shaft grinding will be required, from poverty you will insert the second stimulant. This post is replaced as soon as the hoof is exposed.
    The fact is that these engines were killed by the idle LongLife interval, but also unfortunately material changes. Axx series engines (that is, until 2004) were armored. Unfortunately, the Bxx series had many elements made of shit (like bushings or shafts).
    But renovate - do not replace. Even if you finally get the same amount of money as the replacement, because you always know what you have, you know what was inserted, how it was done and changing the oil every 10, up to 15 thousand km, you will fly hundreds of thousands of kilometers. A drug is always a lottery because you have no guarantee that you have not bought in a similar or worse condition than what you currently have.
  • #8 17026472
    straznik55
    Level 2  
    Posts: 4
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    Board Language: polish
    Gentlemen, the engine was dismantled and it turned out that the pivot is so damaged that it cannot be regenerated, my question is whether the shaft in the BSU is the same as the BLS ???
    Alledrogo offers a wider selection of shafts than the BLS.
  • #9 17026510
    Piasek80
    Level 31  
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    The same ... they differed only in the hardware (outside the engine) and the soft.
  • #10 17026582
    kakibara
    Level 35  
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    And they did not differ precisely in the fights - the difference whether they had dpf or not.
  • #11 17026663
    masay1
    Level 20  
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    crankshaft catalog number for BSU engine is;
    - 038105021Q
    and the same crankshaft is also found in engines with codes;
    BLS, BXE, BDJ, BST, BJB, BXJ, BKC, BXF, BMT
  • #12 17035161
    strucel
    Level 36  
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    Piasek80 wrote:
    Axx series engines (that is, until 2004) were armored. Unfortunately, the Bxx series had many elements made of shit (like bushings or shafts).
    .


    How long will the b series ... go? I have 2008 BVK in Sharan, I bought it a year ago with 500 thousand on the meter and the engine works flawlessly (but the Japanese machine crashed twice, anyway, thanks to this I managed to buy the car cheaply because it was not profitable for a German to spend a few thousand euros in the repair of the box )
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Topic summary

✨ The discussion revolves around finding a suitable replacement engine (pillar) for the VW Caddy 2008 1.9 TDI BSU engine. Participants mention that the BLS, BXE, and BKC engines are interchangeable with the BSU, with minor differences in accessories and models. Concerns about engine knocking lead to suggestions for replacing bushings and grinding the crankshaft instead of a full engine replacement. The discussion highlights the importance of quality repairs over replacements, especially given the material issues in the Bxx series engines compared to the Axx series. The crankshaft catalog number for the BSU engine is identified as 038105021Q, which is also compatible with several other engine codes.
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FAQ

TL;DR: One crankshaft part number covers 10 engine codes; "038105021Q" fits BSU and related 1.9 TDI variants. For swaps, reuse your ancillaries and match DPF/ECU. [Elektroda, masay1, post #17026663] Why it matters: This helps you choose a compatible replacement or rebuild path for a 2008 VW Caddy 1.9 TDI (BSU) with fewer surprises.

Quick facts:

Quick Facts

Which engines can replace a BSU in a 2008 VW Caddy 1.9 TDI?

Common swaps include BLS, BXE, and BMT. Users report these fit interchangeably when you transfer your original ancillaries. Always verify emissions equipment to match your market. "They fit BLS, BMT, BXE interchangeably." [Elektroda, Piasek80, post #17002483]

Are BSU, BKC, BXE, and BLS actually the same long‑block?

Yes. They are the same base engine. Differences are mainly accessories and which models used them. Heads align within the family. This makes block-level swaps practical if you reuse your original bolt-ons. [Elektroda, Piasek80, post #17003563]

Do BSU and BLS use the same crankshaft?

Yes. The catalog lists crankshaft 038105021Q for BSU and also for BLS, BXE, BKC, and several others. If your crank is beyond grinding, this cross‑code part number widens sourcing options. [Elektroda, masay1, post #17026663]

What should I check before installing a non‑BSU replacement?

Match DPF presence, transfer your accessories, and be ready to adapt ECU software. One expert notes differences were in hardware outside the engine and the software. Plan coding accordingly after installation. [Elektroda, Piasek80, post #17026510]

Is it smarter to rebuild my BSU instead of swapping?

Rebuilding preserves known history and quality. Experienced users recommend machining the crank if possible, replacing bearings, and then shortening oil intervals. Used engines can hide equal or worse wear. [Elektroda, Piasek80, post #17004466]

The engine knocks—what is the minimum effective repair?

Address the root cause: replace bearings and grind the crank as required. Compare this cost to a full swap only after measuring journals and parts availability. [Elektroda, Piasek80, post #17003563]

Why do some B‑series 1.9 TDI engines suffer bearing and crank wear?

Two factors: long LongLife oil intervals and material changes versus earlier A‑series. Builders report B‑series shells and shafts are less durable, so shorter oil intervals help longevity. [Elektroda, Piasek80, post #17004466]

Does DPF equipment affect a BSU↔BLS swap?

Yes. BLS in some models included DPF, while certain Caddy markets did not. Align exhaust, sensors, and ECU coding to the vehicle’s emissions configuration during the swap. [Elektroda, Piasek80, post #17004466]

How do I identify a compatible crank quickly?

Use the part number. 038105021Q spans BSU plus nine other codes. Search by this number to compare prices and availability across listings. [Elektroda, masay1, post #17026663]

What oil change interval should I follow after rebuild?

Target 10,000–15,000 km intervals instead of 30,000 km LongLife. This reduces sludge and bearing wear risk on B‑series engines. "Change the oil every 10, up to 15 thousand km." [Elektroda, Piasek80, post #17004466]

Any edge cases that can derail an otherwise “plug‑and‑play” swap?

Yes. A donor with DPF into a non‑DPF car (or vice versa) can cause fitment and ECU faults. Also, buying an unknown used long‑block can replicate your current wear problems. [Elektroda, Piasek80, post #17004466]

What’s a simple 3‑step plan to proceed if my crank is too damaged to grind?

  1. Source crankshaft 038105021Q or a compatible long‑block by code (BLS/BXE/BKC).
  2. Transfer your ancillaries and align DPF/ECU configuration.
  3. Set post‑install oil changes to 10–15k km for longevity. [Elektroda, masay1, post #17026663]

Can I run a BMT or BXE long‑block in my Caddy without major modifications?

Yes, when you retain your original accessories and configure the ECU appropriately. Community reports confirm interchangeability among BLS, BMT, and BXE with this approach. [Elektroda, Piasek80, post #17002483]

Do cylinder heads differ across these 1.9 TDI codes?

Heads are effectively identical within this family and align with the earlier A‑series pattern. Most differences are in blocks and external hardware. [Elektroda, Piasek80, post #17003563]

If I buy a used engine, what’s the main risk to budget for?

Hidden wear. As one expert warns, a used engine is a lottery; you may end up with the same or worse condition. Budget for inspection and refresh parts. [Elektroda, Piasek80, post #17004466]
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