Piston Orientation in Series 3 205 engine?
  • Help
Results 1 to 7 of 7
  1. #1
    VIP Sponsor
    Join Date
    Aug 2000
    Posts
    9,548

    Default Piston Orientation in Series 3 205 engine?

    I have noticed that the tops of the pistons in both my Series 3 engines are marked with an arrow and the letters DIST.
    According to the Haines manual the arrows should point towards the camshaft sprocket and this is the way the pistons are fitted to the engine at present.
    I guess "DIST" refers to something else than distributor? Something to do with camshaft timing probably.
    Could be a trap for the unwary.
    Has anyone tried "Gapless" rings in a 205 engine?
    I intend to buy quality rings from Australian Precision Engine Parts, just trying to decide on gapless or not.
    I've had the head rebuilt with new valve guides, a three angle valve job, and a bit of porting, including manifold matching.
    Graham

    Advertisement

  2. #2
    1000+ Posts Wildebeest's Avatar
    Join Date
    Oct 2004
    Location
    Perth Western Australia
    Posts
    2,712

    Default Pistons..

    Quote Originally Posted by GRAHAM WALLIS
    I have noticed that the tops of the pistons in both my Series 3 engines are marked with an arrow and the letters DIST.
    According to the Haines manual the arrows should point towards the camshaft sprocket and this is the way the pistons are fitted to the engine at present.
    I guess "DIST" refers to something else than distributor? Something to do with camshaft timing probably.
    Could be a trap for the unwary.
    Has anyone tried "Gapless" rings in a 205 engine?
    I intend to buy quality rings from Australian Precision Engine Parts, just trying to decide on gapless or not.
    I've had the head rebuilt with new valve guides, a three angle valve job, and a bit of porting, including manifold matching.
    Graham
    Graham,
    I have to hurry up, Top Gear is starting.

    "Dist" may be a reference to the inlet side of the engine. "Distribution" ?

  3. #3
    Budding Architect ???? pugrambo's Avatar
    Join Date
    Jul 2000
    Location
    Parkes - N.S.W - Australia - Earth
    Posts
    12,283

    Default

    Quote Originally Posted by GRAHAM WALLIS
    I have noticed that the tops of the pistons in both my Series 3 engines are marked with an arrow and the letters DIST.
    According to the Haines manual the arrows should point towards the camshaft sprocket and this is the way the pistons are fitted to the engine at present.
    I guess "DIST" refers to something else than distributor? Something to do with camshaft timing probably.
    Could be a trap for the unwary.
    Has anyone tried "Gapless" rings in a 205 engine?
    I intend to buy quality rings from Australian Precision Engine Parts, just trying to decide on gapless or not.
    I've had the head rebuilt with new valve guides, a three angle valve job, and a bit of porting, including manifold matching.
    Graham

    PRV engines also have this arrow on the piston crowns and they are supposed to face towards the front of the engine

    i just took dist to mean front but my knowledge of french isn't the greatest
    3 x '78 604 SL

    1 x 2018 3008

    1 x 2000 Citroen XM,

    1 x '98 306 GTi6 sadly sold

    1 x secret project

    1 x '98 406 STDT troop carrier and i don't care if it stinks, i don't sniff it's arse Death by wank tank

    1 x '99 406SV 5spd wagon, time to burn more fuel

    1 x 1994 605 SV3.0

  4. #4
    Fellow Frogger!
    Join Date
    Aug 2005
    Location
    Athens, Greece
    Posts
    661

    Default

    Quote Originally Posted by GRAHAM WALLIS
    I've had the head rebuilt with new valve guides, a three angle valve job, and a bit of porting, including manifold matching.
    Graham
    With apologies, Graham, I have a question instead of an answer: What is manifold matching?

    Thank you

    Thanos

  5. #5
    Budding Architect ???? pugrambo's Avatar
    Join Date
    Jul 2000
    Location
    Parkes - N.S.W - Australia - Earth
    Posts
    12,283

    Default

    without knowing exactly what he has done i would say he has match ported the manifolds to the ports on the head to have everything flow evenly without restrictions
    3 x '78 604 SL

    1 x 2018 3008

    1 x 2000 Citroen XM,

    1 x '98 306 GTi6 sadly sold

    1 x secret project

    1 x '98 406 STDT troop carrier and i don't care if it stinks, i don't sniff it's arse Death by wank tank

    1 x '99 406SV 5spd wagon, time to burn more fuel

    1 x 1994 605 SV3.0

  6. #6
    VIP Sponsor
    Join Date
    Aug 2000
    Posts
    9,548

    Default

    Quote Originally Posted by pugrambo
    without knowing exactly what he has done i would say he has match ported the manifolds to the ports on the head to have everything flow evenly without restrictions
    Yes, that's right.
    On the XN "AV" is used to signify front.
    Graham

  7. #7
    Fellow Frogger!
    Join Date
    Aug 2005
    Location
    Athens, Greece
    Posts
    661

    Default

    Quote Originally Posted by GRAHAM WALLIS
    Yes, that's right.
    On the XN "AV" is used to signify front.
    Graham

    Great thank you. The machine shop informs me this has already been done with my XN6 head/DCOE manifold.

    Thanos

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

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