Firewall Forward / Props / Fuel system

Let's talk engines, engine mounts, props, and plumbing. * Note * For specific questions about 2-Strokes and Auto-conversions, please see those areas.

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  1. poormansairforce

    Simple lightweight muffler

    poormansairforce, May 1, 2018 ... 2
    Replies:
    26
    Views:
    1,187
    12notes
    Mar 24, 2019 at 6:04 PM
  2. erkki67

    Engines to replace the dominance of Rotax

    erkki67, Oct 13, 2018 ... 2 3 4
    Replies:
    67
    Views:
    2,124
    choppergirl
    Mar 24, 2019 at 3:09 AM
  3. 12notes

    Fuel syste for Hummelbird with header and wing tanks.

    12notes, Jan 7, 2019 ... 2
    Replies:
    24
    Views:
    661
    Dan Thomas
    Mar 21, 2019 at 2:44 PM
  4. rv6ejguy

    Continental 4A084 SDS EFI Installation

    rv6ejguy, Oct 13, 2018 ... 2
    Replies:
    21
    Views:
    1,045
    rv6ejguy
    Mar 20, 2019 at 1:42 AM
  5. blane.c

    Formula for 4 blade prop

    blane.c, Mar 18, 2019 at 10:48 PM
    Replies:
    0
    Views:
    70
    blane.c
    Mar 18, 2019 at 10:48 PM
  6. TXFlyGuy

    Whirlwind Propeller Company, El Cajon, CA

    TXFlyGuy, Nov 19, 2018
    Replies:
    14
    Views:
    665
    TXFlyGuy
    Mar 15, 2019
  7. flyboy2160

    Oil pan for O-320/360 equivalent without any air induction?

    flyboy2160, Mar 11, 2019
    Replies:
    6
    Views:
    176
    TFF
    Mar 15, 2019
  8. Scheny

    Integrated aerobatic fuel tank with exotic engine

    Scheny, Mar 6, 2019
    Replies:
    16
    Views:
    479
    Monty
    Mar 12, 2019
  9. Hot Wings

    Industrial engine electronic management system development - HBA style

    Hot Wings, Jan 4, 2019 ... 5 6 7
    Replies:
    124
    Views:
    2,420
    rv6ejguy
    Mar 8, 2019
  10. Armilite

    DYNO TESTING A 13HP HONDA

    Armilite, Feb 25, 2019
    Replies:
    15
    Views:
    533
    Armilite
    Mar 4, 2019
  11. BoKu

    Superior buys back all XP-382 and XP-400 engines

    BoKu, Feb 28, 2019 ... 2 3
    Replies:
    47
    Views:
    1,318
    BBerson
    Mar 3, 2019
  12. GESchwarz

    How to seal and secure an AN bulkhead fitting.

    GESchwarz, Feb 27, 2019
    Replies:
    4
    Views:
    108
    GESchwarz
    Feb 27, 2019
  13. Armilite

    Tuned Exhaust Header for a 4 Stroke!

    Armilite, Feb 15, 2019
    Replies:
    18
    Views:
    412
    pictsidhe
    Feb 21, 2019
  14. Armilite

    Tuned Exhaust Header for a 4 Stroke!

    Armilite, Feb 15, 2019
    Replies:
    0
    Views:
    83
    Armilite
    Feb 15, 2019
  15. Dana

    O-100-- interesting new engine

    Dana, Jul 19, 2012 ... 39 40 41
    Replies:
    814
    Views:
    76,536
    addicted2climbing
    Feb 15, 2019
  16. Toobuilder

    Inexpensive Stick On Sump Heater

    Toobuilder, Feb 11, 2019
    Replies:
    12
    Views:
    260
    BJC
    Feb 12, 2019
  17. Caltard13

    new engine supplier: based on suzuki engines

    Caltard13, Feb 4, 2019 ... 2
    Replies:
    31
    Views:
    985
    Vigilant1
    Feb 9, 2019
  18. wsimpso1

    Pre-Flight Sump Check and Drain for Header Tank

    wsimpso1, Feb 3, 2019 ... 2
    Replies:
    33
    Views:
    437
    wsimpso1
    Feb 8, 2019
  19. Scarecrow56

    Kawasaki 440 vs Rotax 447

    Scarecrow56, Feb 1, 2019
    Replies:
    8
    Views:
    212
    pictsidhe
    Feb 4, 2019
  20. 13brv3

    Old HKS engines?

    13brv3, Jan 30, 2019
    Replies:
    19
    Views:
    516
    13brv3
    Feb 3, 2019
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