Crankshaft axial play - need advice
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    1. #1
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      Crankshaft axial play - need advice

      Hello all,

      On my 98 B5234T4 Manual, large axial play was diagnosed when replacing the (original, dmf) clutch. I mean large - about 2-3 mm (1/10 of an inch). Maximum is officially 2/100 mm or smth.

      300.000 km, original clutch totally worn, but Motor ran and runs fine, no weird noises, nothing. Recent new big end bearings and piston rings (didnít expect this issue).

      Now the questions...
      - what to expect when opening the engine wrt the crank and how to repair it?
      - Will I need a new crank for sure? Or has smth else worn.
      - Which cranks (years/engine types) will fit?
      - Consequential damages to other parts?
      - Any jobs to do when the engine is open anyway?
      - Upgrades?

      Thanks for any advice,

      Felix


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    3. #2
      Senior Member ScottishBrick's Avatar
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      Youíd be best to replace the motor. Cheaper and with more benefits


      Sent from my iPhone using Tapatalk
      2003 V70 T5 - Mystic/Graphite - M56LK - 201k - K24/Greens/Do88 IC/SMF & P2R Clutch/DW300C/H&R/Bilstein TC/Delrin/316mm & 308mm Brakes - SteveO Tuned
      1999 V70 T5 - Pewter/R Graphite & Alcantara - AW42 - 292k - Daily/Work Wagon
      1999 V70 T5 - Nautic/R Graphite & Alcantara - M56H - 174k - Rescued
      1999 V70 T5 - Emerald/Graphite - M56H - 119k - Garage Queen
      2000 V70 T5 - Mystic/Graphite - AW42 - 240k - Moms Unicorn
      2000 S70 GLT SE- Mystic/Graphite - AW42 - 215k - Sisters

    4. #3
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      Thanks, sad to hear..

      2 things keep me from doing that:

      - labour rates are very low here (I live in Hungary) and people know what they do
      - engines are scarce and I positively need a B...T4 as it is written in the papers and engine type changes are not (easily) allowed by law.

      So, still happy to hear any thoughts...


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    6. #4
      Senior Member ScottishBrick's Avatar
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      Quote Originally Posted by FKK View Post
      Thanks, sad to hear..

      2 things keep me from doing that:

      - labour rates are very low here (I live in Hungary) and people know what they do
      - engines are scarce and I positively need a B...T4 as it is written in the papers and engine type changes are not (easily) allowed by law.

      So, still happy to hear any thoughts...


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      Engine is technically identical to all 96-98 N block 2.3 turbos. The 4 designation is what makes it an R motor and thatís essential tune only.

      Any N engine 5 cylinder crank should fit afaik.


      Sent from my iPhone using Tapatalk
      2003 V70 T5 - Mystic/Graphite - M56LK - 201k - K24/Greens/Do88 IC/SMF & P2R Clutch/DW300C/H&R/Bilstein TC/Delrin/316mm & 308mm Brakes - SteveO Tuned
      1999 V70 T5 - Pewter/R Graphite & Alcantara - AW42 - 292k - Daily/Work Wagon
      1999 V70 T5 - Nautic/R Graphite & Alcantara - M56H - 174k - Rescued
      1999 V70 T5 - Emerald/Graphite - M56H - 119k - Garage Queen
      2000 V70 T5 - Mystic/Graphite - AW42 - 240k - Moms Unicorn
      2000 S70 GLT SE- Mystic/Graphite - AW42 - 215k - Sisters

    7. #5
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      Quote Originally Posted by ScottishBrick View Post
      Engine is technically identical to all 96-98 N block 2.3 turbos. The 4 designation is what makes it an R motor and thatís essential tune only.

      Any N engine 5 cylinder crank should fit afaik.


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      thx. Will I need any other expensive /scarce parts? consequential damages ? or just gaskets etc. Can big end bearings be re used (only about 20000 km old)?


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    8. #6
      Senior Member ScottishBrick's Avatar
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      Quote Originally Posted by FKK View Post
      thx. Will I need any other expensive /scarce parts? consequential damages ? or just gaskets etc. Can big end bearings be re used (only about 20000 km old)?


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      Bolts are going to add up quick. Canít reuse


      Sent from my iPhone using Tapatalk
      2003 V70 T5 - Mystic/Graphite - M56LK - 201k - K24/Greens/Do88 IC/SMF & P2R Clutch/DW300C/H&R/Bilstein TC/Delrin/316mm & 308mm Brakes - SteveO Tuned
      1999 V70 T5 - Pewter/R Graphite & Alcantara - AW42 - 292k - Daily/Work Wagon
      1999 V70 T5 - Nautic/R Graphite & Alcantara - M56H - 174k - Rescued
      1999 V70 T5 - Emerald/Graphite - M56H - 119k - Garage Queen
      2000 V70 T5 - Mystic/Graphite - AW42 - 240k - Moms Unicorn
      2000 S70 GLT SE- Mystic/Graphite - AW42 - 215k - Sisters

    9. #7
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      Any ideas on the root cause of this? Donít want to have the same issue again after x time..



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    10. #8
      Senior Member ScottishBrick's Avatar
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      Quote Originally Posted by FKK View Post
      Any ideas on the root cause of this? Donít want to have the same issue again after x time..



      Sent from my iPhone using Tapatalk
      Worn bearings indicate loss of lubrication over time occasionally. Update your oil pickup tube and reseal the pan and o ring system. Probably 20 years of cold starts?


      Sent from my iPhone using Tapatalk
      2003 V70 T5 - Mystic/Graphite - M56LK - 201k - K24/Greens/Do88 IC/SMF & P2R Clutch/DW300C/H&R/Bilstein TC/Delrin/316mm & 308mm Brakes - SteveO Tuned
      1999 V70 T5 - Pewter/R Graphite & Alcantara - AW42 - 292k - Daily/Work Wagon
      1999 V70 T5 - Nautic/R Graphite & Alcantara - M56H - 174k - Rescued
      1999 V70 T5 - Emerald/Graphite - M56H - 119k - Garage Queen
      2000 V70 T5 - Mystic/Graphite - AW42 - 240k - Moms Unicorn
      2000 S70 GLT SE- Mystic/Graphite - AW42 - 215k - Sisters

    11. #9
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      Can you maybe elaborate on that update? Is there a later year improvement or smth? Would a later year oil pump also help (somebody hinted that)

      Probably 20 years of cold starts with depressed clutch. Bad habit of mine, introduced by modern cars requiring you to do so.


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    12. #10
      Senior Member ScottishBrick's Avatar
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      Quote Originally Posted by FKK View Post
      Can you maybe elaborate on that update? Is there a later year improvement or smth? Would a later year oil pump also help (somebody hinted that)

      Probably 20 years of cold starts with depressed clutch. Bad habit of mine, introduced by modern cars requiring you to do so.


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      30650552 is the new style pickup. You need 2 longer bolts for it that are actually the same as the whiteblock waterpump bolts. Plus the pan reseal kit/oil pickup o rings.


      Sent from my iPhone using Tapatalk
      2003 V70 T5 - Mystic/Graphite - M56LK - 201k - K24/Greens/Do88 IC/SMF & P2R Clutch/DW300C/H&R/Bilstein TC/Delrin/316mm & 308mm Brakes - SteveO Tuned
      1999 V70 T5 - Pewter/R Graphite & Alcantara - AW42 - 292k - Daily/Work Wagon
      1999 V70 T5 - Nautic/R Graphite & Alcantara - M56H - 174k - Rescued
      1999 V70 T5 - Emerald/Graphite - M56H - 119k - Garage Queen
      2000 V70 T5 - Mystic/Graphite - AW42 - 240k - Moms Unicorn
      2000 S70 GLT SE- Mystic/Graphite - AW42 - 215k - Sisters

    13. #11
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      Thanks!


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    14. #12
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      So I understand that when the crank bearing is really gone, the block might need replacement (not repairable).

      Now I wonder, is it possible to diagnose from below (by only removing the oil pan) if the block is damaged to that extent or not? I.e without removing the engine from the car?

      Thanks again for any insights!


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    15. #13
      Senior Member ScottishBrick's Avatar
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      Quote Originally Posted by FKK View Post
      So I understand that when the crank bearing is really gone, the block might need replacement (not repairable).

      Now I wonder, is it possible to diagnose from below (by only removing the oil pan) if the block is damaged to that extent or not? I.e without removing the engine from the car?

      Thanks again for any insights!


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      I dont think so.

      Probably time to find a new long block and just run the current one as is until it fails or your fresh motor is ready for transplant.
      2003 V70 T5 - Mystic/Graphite - M56LK - 201k - K24/Greens/Do88 IC/SMF & P2R Clutch/DW300C/H&R/Bilstein TC/Delrin/316mm & 308mm Brakes - SteveO Tuned
      1999 V70 T5 - Pewter/R Graphite & Alcantara - AW42 - 292k - Daily/Work Wagon
      1999 V70 T5 - Nautic/R Graphite & Alcantara - M56H - 174k - Rescued
      1999 V70 T5 - Emerald/Graphite - M56H - 119k - Garage Queen
      2000 V70 T5 - Mystic/Graphite - AW42 - 240k - Moms Unicorn
      2000 S70 GLT SE- Mystic/Graphite - AW42 - 215k - Sisters

    16. #14
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      Indeed, thatís going to be the way forward. Thanks.


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    17. #15
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      What would be the best engine to start a (mild) performance rebuild with? Some say a B5234T5 of 2001 (longer rods?) others say an even later T9... What engines would have forged pistons?

      I donít mean super performance, just nice road behaviour, 19t or so, 300-350 hp. Currently a tuned 18t with Do88 RIP and H-beam rods for low end torque. R clutch with M58...


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    18. #16
      Senior Member ScottishBrick's Avatar
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      Crankshaft axial play - need advice

      Quote Originally Posted by FKK View Post
      What would be the best engine to start a (mild) performance rebuild with? Some say a B5234T5 of 2001 (longer rods?) others say an even later T9... What engines would have forged pistons?

      I donít mean super performance, just nice road behaviour, 19t or so, 300-350 hp. Currently a tuned 18t with Do88 RIP and H-beam rods for low end torque. R clutch with M58...


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      Any 03+ t5 engine either t3, t9 or t5.

      T3 is the p2 chassis t5 03-04 and wonít have the valve lash ports the earlier cars do that leak.

      T9 is the C70 03-05 engine that has the light crank, long rods, short pistons but isnít stroked.

      T5 is the stroked 05+ 81mm bore engine.

      T9 can be made into T5 by changing the rods and crank.

      Since you have H beam rods already and a nice supporting setup I would say get a clean T3. Itíll be the easiest (most common) block and usually attached to a dead aw55 trans and can be had for cheapish.


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      Last edited by ScottishBrick; 01-22-2020 at 08:15 AM.
      2003 V70 T5 - Mystic/Graphite - M56LK - 201k - K24/Greens/Do88 IC/SMF & P2R Clutch/DW300C/H&R/Bilstein TC/Delrin/316mm & 308mm Brakes - SteveO Tuned
      1999 V70 T5 - Pewter/R Graphite & Alcantara - AW42 - 292k - Daily/Work Wagon
      1999 V70 T5 - Nautic/R Graphite & Alcantara - M56H - 174k - Rescued
      1999 V70 T5 - Emerald/Graphite - M56H - 119k - Garage Queen
      2000 V70 T5 - Mystic/Graphite - AW42 - 240k - Moms Unicorn
      2000 S70 GLT SE- Mystic/Graphite - AW42 - 215k - Sisters

    19. #17
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      thanks. would the current head fit on it (the t3) ? I donít think the me4.4 will understand the vvt setup? or is there another way to deal with that? coolant channels etc different? motor mounts?


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    20. #18
      Senior Member ScottishBrick's Avatar
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      Quote Originally Posted by FKK View Post
      thanks. would the current head fit on it (the t3) ? I donít think the me4.4 will understand the vvt setup? or is there another way to deal with that? coolant channels etc different? motor mounts?


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      You need the front motor mount bracket from a 99+ p80. Thats it.

      N head is pretty poorly designed, you'll do much better with the solid lifter smaller valve better flowing later heads. Just leave the VVT alone and intact as a cheap solution. Otherwise block off the oil covers and use hub deletes if you have to have "solid" cam hubs.
      2003 V70 T5 - Mystic/Graphite - M56LK - 201k - K24/Greens/Do88 IC/SMF & P2R Clutch/DW300C/H&R/Bilstein TC/Delrin/316mm & 308mm Brakes - SteveO Tuned
      1999 V70 T5 - Pewter/R Graphite & Alcantara - AW42 - 292k - Daily/Work Wagon
      1999 V70 T5 - Nautic/R Graphite & Alcantara - M56H - 174k - Rescued
      1999 V70 T5 - Emerald/Graphite - M56H - 119k - Garage Queen
      2000 V70 T5 - Mystic/Graphite - AW42 - 240k - Moms Unicorn
      2000 S70 GLT SE- Mystic/Graphite - AW42 - 215k - Sisters

    21. #19
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      How about the coils on plug vs the coil/distributor?


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