Engines

Engines, fueling and tuning

  1. 8-valve

    Section for all 8-valve engines
    Discussions:
    3,975
    Messages:
    37,334
    Latest: white oil pressure switch part number references 1.6 bar Jwoodhe1, Jul 18, 2025 at 5:39 PM

  2. 16-valve

    Section for all things related to 16-valve engines
    Discussions:
    4,936
    Messages:
    61,711
    Latest: 16V ABF engine - very high emissions! Peffa, Jul 10, 2025

  3. 1.8 & 1.8T

    Section for all things related to the 20-valve 4 cyl engine
    Discussions:
    2,784
    Messages:
    26,384
    Latest: Open Circuits eddiedebo, Jul 16, 2025 at 8:09 AM

  4. VR5, VR6 & Wx

    Section for all things related to the VR6 & V6 engines
    Discussions:
    1,248
    Messages:
    10,867
    Latest: Mk2 12v VR6 Intake Piping JVNotts, Jul 15, 2025 at 3:09 PM

  5. FSI (inc. GTI 2.0T)

    Section for all things related to the new breed engines (EA888, EA113, FSI, TSI, TFSI - call them what you will)
    Discussions:
    149
    Messages:
    1,285
    Latest: FSI/TFSI into a mk2, best mounting solution? Toyotec, Jun 20, 2025

  6. Diesel

    Section for all things related to diesel engines
    Discussions:
    791
    Messages:
    6,816
    Latest: 1Z 1.9 tdi pump timing issue danster, Jun 29, 2025
Page 1 of 1120
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Title Start Date
Replies ↓ Views
Last Message
  1. rubjonny
    Sticky

    OEM MK4 management wiring => Mk1/2/3 harness install FAQ (Now with added dieselness!)

    rubjonny, Nov 8, 2013 ... 48 49 50
    Replies:
    981
    Views:
    496,267
    rubjonny
    Jun 17, 2025
  2. A.N. OTHER
    Sticky

    4 cylinder bore & stroke combinations + max bore & stroke list

    A.N. Other, Jan 20, 2011 ... 2 3
    Replies:
    43
    Views:
    51,558
    HPR
    Jun 11, 2020
  3. VW_SINGH
    Sticky

    Mk1 Golf - Fuel starvation on right hand bends.Analysis and conclusion

    vw_singh, Jun 30, 2009
    Replies:
    15
    Views:
    17,694
    vw_singh
    Jul 3, 2009
  4. A.N. OTHER
    Sticky

    The GTI Engine and its humble origins

    A.N. Other, Sep 28, 2010
    Replies:
    13
    Views:
    13,202
    A.N. Other
    Sep 30, 2010
  5. davkav
    Sticky

    Idle Stabilisation Valve (ISV) teardown

    davkav, Apr 17, 2018
    Replies:
    10
    Views:
    1,572
    xav
    Oct 9, 2022
  6. Toyotec
    Sticky

    Fuel pumps and flow capablity

    Toyotec, Apr 14, 2011
    Replies:
    9
    Views:
    8,045
    Dave
    Jul 3, 2024
  7. A.N. OTHER
    Sticky

    Technical Engine Performance Discussions Index

    A.N. Other, Nov 27, 2013
    Replies:
    0
    Views:
    3,347
    A.N. Other
    Nov 27, 2013
  8. CRISPY 8V
    Locked Sticky

    VAG COM Users in FAQ

    Crispy 8V, Jun 27, 2006
    Replies:
    0
    Views:
    11,634
    Crispy 8V
    Jun 27, 2006
  9. ambrose89

    best engine for high power/weight ratio? AKA Ben's Cab

    ambrose89, Jun 1, 2007 ... 18 19 20
    Replies:
    395
    Views:
    23,427
    fthaimike
    Sep 24, 2010
  10. Riley

    feckin g60...the end? seems so :-)

    Riley, Oct 15, 2005 ... 17 18 19
    Replies:
    377
    Views:
    20,222
    KeithMac
    Jan 9, 2006
  11. Nige

    Ebay / VMI Forged Conrods & Bolts. Never again..... !

    Nige, Sep 3, 2014 ... 9 10 11
    Replies:
    205
    Views:
    55,281
    Magnata820
    Sep 27, 2018
  12. FABVR6

    10k boost

    FABVR6, Mar 2, 2004 ... 7 8 9
    Replies:
    175
    Views:
    17,815
    Matt82
    Aug 7, 2007
  13. Matt82

    60-100mph

    Matt82, Oct 15, 2006 ... 6 7 8
    Replies:
    154
    Views:
    9,858
    dubst16v
    Nov 13, 2006
  14. A.N. OTHER

    4 cyl big block oil pumps - how many versions? FAQ added p2. Updated p4.

    A.N. Other, Aug 18, 2009 ... 6 7 8
    Replies:
    148
    Views:
    62,920
    pingman
    Aug 23, 2016
  15. THE_GOG

    ***update*** think i've cured it!!

    ThE_gOg, Aug 29, 2007 ... 6 7 8
    Replies:
    147
    Views:
    7,575
    Mike_H
    Apr 8, 2008
  16. Riley

    Please help my G60.still not right - UPDATE VIDS PAGE 5

    Riley, Sep 4, 2005 ... 6 7 8
    Replies:
    146
    Views:
    8,513
    Riley
    Aug 18, 2008
  17. DCB 16V
    Locked

    MK2 16V Head Gasket Renewall...!

    DCB 16V, Nov 21, 2003 ... 6 7 8
    Replies:
    146
    Views:
    7,469
    Trev16v
    Nov 24, 2003
  18. MK1MATT

    50mm Inlet

    mk1Matt, Jan 19, 2005 ... 5 6 7
    Replies:
    136
    Views:
    13,232
    gti_kev
    Aug 24, 2005
  19. Riley

    DESPERATE PLEA FOR HELP from someone in north west. RE:My rado g60.

    Riley, Jul 14, 2007 ... 5 6 7
    Replies:
    135
    Views:
    5,639
    Riley
    Jul 21, 2007
  20. PRASH

    AIR FILTER

    Prash, Nov 15, 2004 ... 5 6 7
    Replies:
    120
    Views:
    9,735
    Demons_UK
    Feb 10, 2008
  21. THESECONDCOMING

    Fecking stumped! (1990 8v Gti)

    TheSecondComing, Jan 17, 2004 ... 5 6 7
    Replies:
    120
    Views:
    7,931
    TheSecondComing
    Mar 7, 2004
  22. A.N. OTHER

    Crank pulley vibration dampers & harmonics. Update: Lightweight crank pulleys = Bad

    A.N. Other, Jan 18, 2010 ... 4 5 6
    Replies:
    119
    Views:
    23,783
    mec82
    Feb 21, 2012
  23. dan_1987

    Starting Problem - Lack of Power?

    dan_1987, Sep 1, 2007 ... 4 5 6
    Replies:
    103
    Views:
    6,013
    mattkh
    Jan 3, 2009
  24. GOLFVR6
    Locked

    9A block from VW

    Golfvr6, Jan 6, 2004 ... 4 5 6
    Replies:
    103
    Views:
    6,015
    Dex
    Jan 7, 2004
  25. DEAJAM

    8v and 16v torque

    deajam, Sep 7, 2004 ... 4 5 6
    Replies:
    101
    Views:
    7,165
    fthaimike
    Sep 17, 2004
  26. NICKH89GTI

    Digifant Idle at 2.5-3k When Warm

    nickh89GTi, Jul 3, 2008 ... 3 4 5
    Replies:
    98
    Views:
    6,597
    nickh89GTi
    Jan 27, 2009
  27. HEHEHH

    Golf 2 GTI - fuel enters the oil - help!

    hehehh, Jan 3, 2004 ... 3 4 5
    Replies:
    98
    Views:
    4,378
    hehehh
    Jan 13, 2004
  28. copeidge

    8v or 16v

    copeidge, Feb 28, 2008 ... 3 4 5
    Replies:
    95
    Views:
    5,464
    luminosa
    Mar 7, 2008
Showing threads 1 to 20 of 22,383

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