Results 1 to 9 of 9

Thread: Flapper kaput

  1. 19th November 2011, 11:10 AM #1
    greybeard
    greybeard is offline Fossicker
    Join Date
    Aug 2010
    Location
    Australia
    Posts
    10
    Total Downloaded
    0

    Flapper kaput

    Hi all,
    the flapper on my 1988rr finally expired after a huge backfire.The truck runs on LPG and has survived numerous backfires.I have always managed to repair the flapper(Using a pin punch and a hammer)but this time it is beyond repair.

    Thanks,
    Greybeard
    Last edited by Scouse; 19th November 2011 at 08:00 PM. Reason: Wanted ad removed. Please use the Markets.
    Reply With Quote Reply With Quote
  2. 19th November 2011, 02:50 PM #2
    BigJon's Avatar
    BigJon
    BigJon is offline ForumSage
    Join Date
    Jan 1970
    Location
    Adelaide - Torrens Park
    Posts
    7,291
    Total Downloaded
    0
    I think XF Falcon ones are the same body, you just have to swap the electronics between them.
    Reply With Quote Reply With Quote
  3. 19th November 2011, 07:22 PM #3
    bee utey's Avatar
    bee utey
    bee utey is offline AT REST
    Join Date
    Apr 2009
    Location
    Crafers West South Australia
    Posts
    11,732
    Total Downloaded
    0
    You really should have a backfire protector valve downstream of a flapper. Much safer.

    Reply With Quote Reply With Quote
  4. 21st November 2011, 02:02 AM #4
    400HPONGAS's Avatar
    400HPONGAS
    400HPONGAS is offline Master
    Join Date
    Jan 2010
    Location
    Newman WA
    Posts
    889
    Total Downloaded
    0
    I thought the Flapper was more like the VL commodore one , same problem with the wiring though .
    Reply With Quote Reply With Quote
  5. 21st November 2011, 02:03 AM #5
    400HPONGAS's Avatar
    400HPONGAS
    400HPONGAS is offline Master
    Join Date
    Jan 2010
    Location
    Newman WA
    Posts
    889
    Total Downloaded
    0
    oops
    Reply With Quote Reply With Quote
  6. 21st November 2011, 09:43 PM #6
    crocky
    crocky is offline Fossicker
    Join Date
    Nov 2010
    Location
    Ravenswood, VIC
    Posts
    25
    Total Downloaded
    0
    have you tried to fix the backfire fault rather than fix what breaks? could be something as simple as a vacuum leak etc. just a thought
    cheers
    croky
    Reply With Quote Reply With Quote
  7. 23rd November 2011, 01:35 PM #7
    greybeard
    greybeard is offline Fossicker
    Join Date
    Aug 2010
    Location
    Australia
    Posts
    10
    Total Downloaded
    0

    Flapper kapoy

    Quote Originally Posted by BigJon View Post
    I think XF Falcon ones are the same body, you just have to swap the electronics between them.
    Thanks for that.I got one from the wreckers and it should be easy enough to swap the electrics.I also bought a XF engine fan and hub.I trimmed 5mm off the blades and it fits perfectly.
    AS for the cause of backfires,I put it down as an act of god after trying everything I and several forumists can think of.
    Cheers, Greybeard
    Reply With Quote Reply With Quote
  8. 30th November 2011, 09:26 PM #8
    POD's Avatar
    POD
    POD is offline ChatterBox Subscriber
    Join Date
    Jun 2008
    Location
    Drouin East, Vic
    Posts
    2,781
    Total Downloaded
    0
    Quote Originally Posted by greybeard View Post
    Thanks for that.I got one from the wreckers and it should be easy enough to swap the electrics.I also bought a XF engine fan and hub.I trimmed 5mm off the blades and it fits perfectly.
    AS for the cause of backfires,I put it down as an act of god after trying everything I and several forumists can think of.
    Cheers, Greybeard
    One thing that I haven't seen mentioned on the forum, that was the cause of many a destructive backfire in my old 88RR before I finally found it. The small 2-wire harness to the reluctor inside the distributor. These wires flex every time the vac-advance unit moves. On my car, the constant movement had eventually caused an internal fracture of one of the wires, resulting in intermittent backfires and even dead cuts upon change of throttle position. Worth a look if you haven't already.
    Reply With Quote Reply With Quote
  9. 5th December 2011, 04:59 PM #9
    greybeard
    greybeard is offline Fossicker
    Join Date
    Aug 2010
    Location
    Australia
    Posts
    10
    Total Downloaded
    0

    Flapper kaput

    Quote Originally Posted by POD View Post
    One thing that I haven't seen mentioned on the forum, that was the cause of many a destructive backfire in my old 88RR before I finally found it. The small 2-wire harness to the reluctor inside the distributor. These wires flex every time the vac-advance unit moves. On my car, the constant movement had eventually caused an internal fracture of one of the wires, resulting in intermittent backfires and even dead cuts upon change of throttle position. Worth a look if you haven't already.
    Hi Pod,yes,i played around with my multimeter and all seemed good.
    I have always suspected Lucas stuff and I did a Bosch conversion,ala
    Bee utey.No noticeable difference but at least I know where to get spares if it claps out.
    The ignition advance timing marks on the crankshaft pulley read in fractions of an inch instead of degrees so there is more scope to experiment.You have to love the old trucks,mine keeps me off the streets.
    Cheers, Greybeard
    Reply With Quote Reply With Quote
« source for 2-door rubber seals? | Identify this radius rod »

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules

Search AULRO.com ONLY!
 Search All the Web!