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Thread: Bobby Singh's Audi A4 3.0 TDI Project car

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  1. Re: Bobby Singh's Audi A4 3.0 TDI Project car 
    #51
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    Quote Originally Posted by Gazwould View Post
    Still not as fast as a BITDI !



    Haha yes
    But it seems like he has now realised the difference between butt dyno and timed runs
     
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  2. Re: Bobby Singh's Audi A4 3.0 TDI Project car 
    #52
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    100 to 200 in 9.7seconds
     
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  3. Re: Bobby Singh's Audi A4 3.0 TDI Project car 
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    April 2018

    Been a while but been busy on other projects.
    I had a issue with a leak on the oil return line rubbing on a bolt:



    So decided on a banjo fitting @ 30deg which gave me perfect clearance with new a -10 hose





    Also, BW do a compressor housing which according to the compressor map had less surge so this was installed at the sametime:



    On a side note these are the best clamps I have ever come across - they apply fixed torque regardless of temperature changes.





    So far the results are very good I can demand more torq low down without going into surge

    Plenty air available top end.

    Next little project will be to measure cylinder pressures
     
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  4. Re: Bobby Singh's Audi A4 3.0 TDI Project car 
    #54
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    Excellent, as always.
    Quote "My tuner told me after he fitted the box that 0-60 should be around 2.6 seconds! "
     
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  5. Re: Bobby Singh's Audi A4 3.0 TDI Project car 
    #55
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    July 2018

    PCP findings are interesting, lets just say its amazing the heads are still on


    Cleaned out the intank fuel pump:





    When 4 bar map sensor is no longer enough - 6 bar sensor fitted.
    The probe is 18mm and the plastic hard pipe does not have enough material to drill it out.






    Cheers
    Bobby
     
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  6. Re: Bobby Singh's Audi A4 3.0 TDI Project car 
    #56
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    Very nice build where did you get your zf gearbox service kit do I have the same box as you myne is the 6 speed tiptronic Audi code is LMK
     
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  7. Re: Bobby Singh's Audi A4 3.0 TDI Project car 
    #57
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    Thanks
    Its was from a German ebay seller - look for zf 6hp 28 service kit we have a steel sump.

    Cheers
     
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  8. Re: Bobby Singh's Audi A4 3.0 TDI Project car 
    #58
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    September 2018
    Nothing new to report but now have covered 10k on the new the turbo set up.
    Done some more testing with a couple of new gearbox tunes:

    0 - 60 - best i can get is 4.2s (same as before)
    0 - 100 has improved 8.7secs (previously was around 9.3s)
    All timed with VCDS @ 20hz

    Looking at the 0 to 100 I would say high 11's is on the cards. Just need to find the time to do a few runs

    Cheers
     
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  9. Re: Bobby Singh's Audi A4 3.0 TDI Project car 
    #59
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    September 2018

    For the last few months I've been getting chain rattle on start up.
    Didn't think much of it as it cleared pretty quickly.
    However, before things got worse I thought I'd take a gamble and change the tensioners and guides on both banks before taking the engine out to do all the chains etc.

    Febi chain kit (oem)


    RHS bank


    LHS bank


    Wearing:



    The old tensioners appear to be leaking/not holding pressure until the engine oil pressure was enough.
    Covered approx 500 miles and no rattle so far.

    Worth doing these first I suggest if anyone gets the same issue.


    September 2018

    In preparation for some drag racing action. I found some private land and done some testing
    Gearbox tune is working well:

    Microsoft OneDrive - Access files anywhere. Create docs with free Office Online.

    Finally cracked sub 4s to 60mph (96km/h) ~ 3.9s
    0 to 100 is 8.3's

    I was looking at my 12.3s (best at Santa Pod 1/4 mile time logs and on that run I hit 0 to 100 in 9.79s so approx 1.5's quicker now

    Should be interesting

    Cheers
    Bobby
     
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  10. Re: Bobby Singh's Audi A4 3.0 TDI Project car 
    #60
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    Anyone watching this thread and wants big power you may want to consider this:

    https://www.audi-sport.net/xf/thread.../#post-3322627
     
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