Jump to content

Forums

  1. General Chit Chat

    1. Sideways Has a New Home

      368
      posts

    2. Welcome and News

      Let us know who you are and give us a link to your site. No linkbacks required i just like to be nosy :)

      3.2k
      posts

    3. General Discussions on anything

      Chit chat about anything for want

      34.5k
      posts

    4. The Coventry Inn

      Think of it as your digital pub.  Be warned, it has an Aussie barman...

      3.8k
      posts

    5. Members Cars and Project threads

      Post pics of your car here, also make a thread and show us how you are doing with upgrades and repairs etc!

      22.6k
      posts

    6. Ranting Arena

      Anything go's in here so please feel free to rant and rave about anything within reason....
      Parental Advisory maybe required.

      12.1k
      posts

    7. Alternative Hobbies

      Board for non-car related hobbies, sports etc.

      3.3k
      posts

    8. Events and Motorsports

      Going somewhere interesting, want to meet up with anyone. Shows, trackdays etc.

      6k
      posts

    9. Forum Queries and Suggestions

      Got a suggestion or question? post it here!
      Input welcomed from members.

      820
      posts

  2. Technical discussion boards

    1. General Technical Discussions

      Can't work out where to post? Try here.
      Talk about anything technical, any subject.

      10.2k
      posts

    2. General Engineering / Workshop Discussions

      Engineering or Workshop Questions, tools etc.

      3.6k
      posts

    3. Engine and Ancillary talk

      Talk about anything related to engines or engine ancillaries or engine swaps.

      11.2k
      posts

    4. Carburettors

      Ask any resident gurus about ANY carb questions.
      Any car, any fitment, don't be shy.

      3.2k
      posts

    5. Electrics

      1.5k
      posts

    6. Ignition, ECU and Fuel Injection

      Distributers, Megajolt, aftermarket injection etc

      7.3k
      posts

    7. Bodywork and Trim

      941
      posts

    8. Drivetrain

      Gearboxes, Diffs, Propshafts and the likes.

      2.6k
      posts

    9. Suspension, Handling, Tyres and Brakes

      Want your car to handle, corner and stop?

      6.2k
      posts

    10. Interchangeable Parts

      Post any interchangeable parts here.

      472
      posts

    11. General TrackDay and Race Prep

      Discuss GENERAL track prep here

      547
      posts

    12. Technical Articles & Reviews

      My personal area.
      You may submit your own tech articles.
      Email them to me!

      90
      posts

    13. Triumph Small Chassis Archive

      The best posts from the small chassis section from the past.
      Read Only

      8.6k
      posts

  3. General Car Discussions

    1. Triumph Spitfire / GT6 / Herald / Vitesse

      Talk about your small chassis triumph

      1.8k
      posts

    2. Triumph TR Series

      Talk about your TR Series Triumph

      1.3k
      posts

    3. All Other Triumphs

      TR2-8, Saloons, Dolomites.
      Standard, Fast Road, Race.

      928
      posts

    4. General BMC car chat

      Standard, Fast Road, Race. All welcome.

      227
      posts

    5. K Series Specials

      Rover K Series powered road rockets

      4
      posts

    6. Lotus, Caterham, Marcos, Morgan etc

      Chat about any of the main "small company" road rockets. ALL cars welcomed.

      206
      posts

    7. Other Marques

      Other cars that aren't Triumphs?!

      1.3k
      posts

    8. Modern Cars

      Talk about your modern hack...

      1.1k
      posts

  4. Trading Area

    1. WANTED OR SALE. Cars, Parts and Spares

      List any Cars, Parts and Spares for sale or wanted.
      FOR FREE (unless trade). READ the RULES first.

      3.3k
      posts

    2. Links to Ebay or Anywhere

      See something cool for sale?
      List it here. Also link your Ebay items.

      3k
      posts

    3. GT's Classic Claims

      25
      posts

  • Forum Statistics

    10.3k
    Total Topics
    156.5k
    Total Posts

  • Chatbox

    You don't have permission to chat.
    Load More

  • Recent Posts

    • egret
      Wideband AFR kit

      By egret · Posted

      I went for an AEM one on the basis that the sensor itself was more robust. It plays nicely with the Speeduino and between the cold starts, fuelling issues, and oil burning my engine experiences I figured I'd give myself the best chance that I wouldn't immediately kill it!
    • yorkshire_spam
      Wideband AFR kit

      By yorkshire_spam · Posted

      Thanks for the pointers guys... hopefully Santa can sort one out for me! 😉  
    • yorkshire_spam
      Range Rover Classic

      By yorkshire_spam · Posted

      My second car was a 1991 Vogue SE 3.9 I miss that car, but I don't miss the fuel bills, even on LPG! I would have given body parts for a factory 200tdi! 
    • michaeljf
      Range Rover Classic

      By michaeljf · Posted

      Hello, Now more wheels are good (don't ask me how I know )........but we must not forget the ones that are in the queue! Regards, Michael.
    • Escadrille Ecosse
      Andrew's Mk IV Spitfire

      By Escadrille Ecosse · Posted

      Sorry Nick when I said vacuum it was the kind of induction imbalance you mention i was thinking about. Although wasn't sure if that would just arise from throttle balance or from the various joints in tje inlet tract and vacuum connections. 
    • egret
      Andrew's Mk IV Spitfire

      By egret · Posted

      Those are fine very good points, thanks you. I spent this evening cutting out gaskets and replacing the rubber o ring spacers between manifold and throttle bodies.  It now all bolts up tight so hopefully that'll reduce any vacuum leaks. Next up will be to check the linkage settings (only one link as I have two shafts each containing two butterflies).  Change the fuel filters and try some more driving and troubleshooting.
    • Nick Jones
      Andrew's Mk IV Spitfire

      By Nick Jones · Posted

      Could be a vacuum leak. Though this would likely mess up the idle as well. One of the “joys” of ITBs is setting both the static idle (throttle stops) balance, but also getting the linkage to  pick them all up equally and simultaneously. This is also a thing with carbs, but the added wrinkle with injection (as touched on previously) is that while unbalanced carbs will maintain roughly the right AFR as each barrel sorts itself according to airflow, injection won’t. This because (unless you have a really flash system), the load signal (either MAP or TPS) will be an average (ish) of all cylinders and the ECU will dose all cylinders equally based on that. So if the air isn’t equal too, those with more air will be lean, and those with less will be rich. This effect will be most pronounced at small throttle openings and also, if your idle balance is good but linkage pickup is not, you’ll have a decent idle but it’ll still run like crap just off idle. (Guess how I know this ).  If you have 4 pots with paired throttles it should be reasonably simple. 4 individual a bit less so. 6 individual, with both settings separate on each is a bit of a bugger….
    • Escadrille Ecosse
      Andrew's Mk IV Spitfire

      By Escadrille Ecosse · Posted

      Seems very plausible Nick. You have a lot more experience of this injection malarky (notdifficult as mine is effectively zero). However I was thinking about the problem this morning after reading the post and my thought was that is felt like an induction/vacuum type problem too.
    • Nick Jones
      Wideband AFR kit

      By Nick Jones · Posted

      I used an Innovate LC1 for many years in the Vitesse. It became a bit cantankerous and got swapped for an AEM, which was very problematic, so it got returned and swapped for a Zietronics one, which seems good.
    • Nick Jones
      Interesting YouTube channels

      By Nick Jones · Posted

      That’s very cool  And educational….. I’d never heard of rock cannons before, Welsh or otherwise.

  • Topics

×
×
  • Create New...