Throttle Bodies
  • Register
  • Help
Results 1 to 6 of 6

Thread: Throttle Bodies

  1. #1
    twm
    twm is offline
    Fellow Frogger! twm's Avatar
    Join Date
    May 2005
    Location
    Hills/Sydney/NSW
    Posts
    209

    Default Throttle Bodies

    Hi There

    While I was searching around I came across "Throttle Bodies" looks like 4 ram tubes etc, can anyone shed anylight on what these are suppose to achieve and if they actualy do?

    Advertisement


    Cheers


    Terry
    Kurrajong

    Pug 206 CC 2litre

  2. #2
    1000+ Posts CHRI'S16's Avatar
    Join Date
    Jun 2002
    Location
    Sydney
    Posts
    3,298

    Default

    ... most cars already have a Throttle Body, that is the air entering the engine passes through an adjustable path. On most cars its a singular, round valve & mounted at the start of the intake manifold. Most throttle bodies comprise of a cable/servo attached to the accelerator via a cable. When this cable moves it opens the throttle valve letting more air into the engine, more air needs more fuel; hence revs & power increases.
    Now Quad, dual or mutiple throttle bodies means that instead of having 1 large unit feeding in the air, why not have one for each cylinder... hence for us 4 cylinder owners quad throttle bodies means 4 (quad) throttles. There is some performance gain in this, based around the fact/theories that air flows better/faster with less or particular restrictions; if the engine takes more air, you gotta have more fuel. More air + more fuel = bigger bang, hence the theory more power.
    The part that looks like 4 ram tubes is the in an essence just a mouth for the throttle. There is science around the harmonics of air (sound is modified air) that can make the air travel in different volumes at different speeds, these "ram tubes" are part of that science/tuning system that help any throttle body achive more power. Since they can look real cool people make them look cool, by polishing, carbon fibre, paint etc. Asthetics can be just as pleasing as dyno figures. Don't forget that these ram tubes are only 1 component of the throttle bodies; theres lots more. Such as the assembly, the manifolds, the butterfly valves, Injectors in some cases etc...
    Throttle bodies on their own do very little, but when combined with things like a good fuel & ignition map, extractors, cams, valves etc you get a 4 stroke engine making more power than it did before. But probably forsake something such as noise, driveablility or fuel consumption. This is were research or a good mechanic comes into play.
    Google things like EFI Hardware for pictures etc to get an idea.
    does that make sence, does any one think im blowing in the wind... - Chris
    Last edited by CHRI'S16; 9th September 2005 at 03:56 PM.
    ... ptui!

  3. #3
    Fellow Frogger!
    Join Date
    Aug 2005
    Location
    Athens, Greece
    Posts
    661

    Default

    Quote Originally Posted by CHRI'S16
    ... most cars already have a Throttle Body, that is the air entering the engine passes through an adjustable path. On most cars its a singular, round valve & mounted at the start of the intake manifold. Most throttle bodies comprise of a cable/servo attached to the accelerator via a cable. When this cable moves it opens the throttle valve letting more air into the engine, more air needs more fuel; hence revs & power increases.
    Now Quad, dual or mutiple throttle bodies means that instead of having 1 large unit feeding in the air, why not have one for each cylinder... hence for us 4 cylinder owners quad throttle bodies means 4 (quad) throttles. There is some performance gain in this, based around the fact/theories that air flows better/faster with less or particular restrictions; if the engine takes more air, you gotta have more fuel. More air + more fuel = bigger bang, hence the theory more power.
    The part that looks like 4 ram tubes is the in an essence just a mouth for the throttle. There is science around the harmonics of air (sound is modified air) that can make the air travel in different volumes at different speeds, these "ram tubes" are part of that science/tuning system that help any throttle body achive more power. Since they can look real cool people make them look cool, by polishing, carbon fibre, paint etc. Asthetics can be just as pleasing as dyno figures. Don't forget that these ram tubes are only 1 component of the throttle bodies; theres lots more. Such as the assembly, the manifolds, the butterfly valves, Injectors in some cases etc...
    Throttle bodies on their own do very little, but when combined with things like a good fuel & ignition map, extractors, cams, valves etc you get a 4 stroke engine making more power than it did before. But probably forsake something such as noise, driveablility or fuel consumption. This is were research or a good mechanic comes into play.
    Google things like EFI Hardware for pictures etc to get an idea.
    does that make sence, does any one think im blowing in the wind... - Chris
    actually, this is quite good...

  4. #4
    Member wtpug306's Avatar
    Join Date
    May 2004
    Location
    Melbourne
    Posts
    110

    Default

    any performance throttle body availiable for 306?

  5. #5
    Fellow Frogger! Kyle's Avatar
    Join Date
    Sep 2004
    Location
    Muswellbrook
    Posts
    873

    Default

    Quote Originally Posted by wtpug306
    any performance throttle body availiable for 306?
    You won't find anything off the shelf in australia. And places in the uk charge around 5k for a kit...

    For $1500 efi technology can supply all parts for the tb's, but then you need your inlet manifold modified... then you need an aftermarket ecu, then you need new injectors....

    If your 306 isnt a gti6 or s16, i'd maybe look at an engine swap instead of quad throttles first

  6. #6
    Fellow Frogger!
    Join Date
    Aug 2005
    Location
    Athens, Greece
    Posts
    661

    Default

    Quote Originally Posted by wtpug306
    any performance throttle body availiable for 306?
    I have seen this done on a 306 GTI Race here in Greece and the results were impressive, but you would also need to uprate a number of other components for the full benefit including injection, exhaust and ingnition, reprofiled cams and custom programming on a dyno after all the components are on. Done properly, it is quite an expensive conversion yielding a bit more than 35 hp and as many as 60 depending on the previous tune of your engine. I would not do it, opting for a complete 504 or 404 rally car for the same money I would spend on the conversion, but it's your money and your decision.

    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
  •