carburetors

1. dan_dan_the_saxo_man Frequent Poster Joined: Dec 2009 England Posts: 574 1998 saxo 1.1 sx 2001 saxo vtr

   #1 12th November 2011, 14:41

   hello there
   
   i was having a hard conversation with my dad the other night...i was going on about loads of people on this site using throttle bodies and stuff.
   
   he said, throttle bodies? whats wrong with carbs?
   
   
   
   ...and let me get this straight i know nothing about carbs...so i listened to him and hes made me wonder about them. he actually said back in his day a ford escort xr3 was supposed to be faster than an xr3i.
   
   
   whats the opinion about carbs on here? and can i have a little more info on them please? he seemed to say they would give nice power increase? but im not certain, but then again im not the most knowledgeable about this.
   
   
   cheers dan.
2. f13sta Established Member Joined: Sep 2010 loughborough Posts: 2229 1988 ford fiesta mk2 1.4- 2001 black saxo furio (d

   #2 12th November 2011, 15:01

   bike carbs is what you want. if your considering carbs.
   
   don't loose the free reving of the multi-point injection, almost same mpg.
   
   as for converting a ecu engine to run carbs.
   
   (only going from converting a ford zetec)
   
   you'll need atlease to run mega-jolt on the original edis + coil pack system (maybe a conversion for the saxo engine.)
   
   a custom inlet manifold will need to be made.
   and the carbs re-jetting for your engine. something like cbr 1000 carbs work well on a 1600.
   
   it's not as simple as just putting carbs onto your engine.
   most injection to carb systems are designed for the zetec install into old skool fords but can also be used on other cars. however there are some people who have fitted twin 40's to saxo engines.
   hate to think what its like m.o.t time.
   if the xr2 was injection back in the day it would have been quicker than the xr3 but iirc the xr3i had a little more power but alot of it would be due to the driver.

   1 user thanked this post: dan_dan_the_saxo_man
3. Ryanp Super Moderator Joined: Feb 2004 Tonbridge United Kingdom (England) Posts: 38236 Vtr, 172, throttle bodied track slut

   #3 13th November 2011, 08:53

   Bike carbs are still carbs.
   
   
   Bike bodies are with injector.
   
   Carb tuning is out dated, hence why people use bodies for the better package
4. Grant187 Infrequent Poster Joined: Oct 2011 Stone Cross Posts: 184

   #4 14th November 2011, 03:01

   If carbs were better we would just use them in every day right ???
5. dan_dan_the_saxo_man Frequent Poster Joined: Dec 2009 England Posts: 574 1998 saxo 1.1 sx 2001 saxo vtr

   #5 14th November 2011, 10:20

   Quote:

   Originally Posted by Grant187 If carbs were better we would just use them in every day right ???

   thats why im asking..
6. Grant187 Infrequent Poster Joined: Oct 2011 Stone Cross Posts: 184

   #6 14th November 2011, 18:00

   Quote:

   Originally Posted by dan_dan_the_saxo_man thats why im asking..

   lol ok
7. f13sta Established Member Joined: Sep 2010 loughborough Posts: 2229 1988 ford fiesta mk2 1.4- 2001 black saxo furio (d

   #7 14th November 2011, 18:04

   `depends what you mean on 'being better', injection is more fuel efficiant and better for turbos.
   carbs are more tuneable and less to go wrong.
   
   but alot of it has to do with what your are more comfortable with.

   1 user thanked this post: dan_dan_the_saxo_man
8. dan_dan_the_saxo_man Frequent Poster Joined: Dec 2009 England Posts: 574 1998 saxo 1.1 sx 2001 saxo vtr

   #8 14th November 2011, 18:08

   Quote:

   Originally Posted by f13sta `depends what you mean on 'being better', injection is more fuel efficiant and better for turbos. carbs are more tuneable and less to go wrong. but alot of it has to do with what your are more comfortable with.

   i see...im thinking it was the way my dad was putting it...made them sound godly haha...doesnt sound so good now
9. Kyza Established Member Joined: Apr 2010 Posts: 1016

   #9 14th November 2011, 18:08

   Throttle bodies > Carbs.
   
   Keyless start > wrench thing you spin on front of car
   
   etc.
10. dan_dan_the_saxo_man Frequent Poster Joined: Dec 2009 England Posts: 574 1998 saxo 1.1 sx 2001 saxo vtr

    #10 14th November 2011, 18:16

    Quote:

    Originally Posted by Kyza Throttle bodies > Carbs. Keyless start > wrench thing you spin on front of car etc.

    ye i see the sense in that
11. dan_dan_the_saxo_man Frequent Poster Joined: Dec 2009 England Posts: 574 1998 saxo 1.1 sx 2001 saxo vtr

    #11 14th November 2011, 18:17

    i was mainly wondering if they had better performance figures but i guess not
12. Ryanp Super Moderator Joined: Feb 2004 Tonbridge United Kingdom (England) Posts: 38236 Vtr, 172, throttle bodied track slut

    #12 14th November 2011, 19:00

    Quote:

    Originally Posted by dan_dan_the_saxo_man i was mainly wondering if they had better performance figures but i guess not

    If carbs were better for performance we wouldnt all be spending thousands on TBs/ECU/good mapping
13. Jon_Doe Regular Poster Joined: Jan 2007 Bathford.com Posts: 319 Saxo VTS Mk1

    #13 18th November 2011, 17:49

    With throttle bodies and an ecu running then a good system can have loads of things adjusted- mapping.
    Carbs can be set up nicely- Weber DCOE system uses a few different channels for different things going on (idle, wide open throttle etc) and you can change all the jets etc... but its manual adjustment rather than setting up a multi dimensional map.

    1 user thanked this post: dan_dan_the_saxo_man
14. axsaxoman Saxperience Forum Bum Joined: Jan 2003 Scotland Posts: 3380

    #14 18th November 2011, 23:46

    Quote:

    Originally Posted by f13sta `depends what you mean on 'being better', injection is more fuel efficiant and better for turbos. carbs are more tuneable and less to go wrong. but alot of it has to do with what your are more comfortable with.

    totally wrong
    carns are far harder to get RIGHT than injection
    they have no advantage in performance at any point in the rpm range,car will never pass an mot ,on hort days are you going to rejet them to compensate for air density ?
    
    there are lots of reasons why carbs are not the best -too many to list simply
    injection systems go wrong 1--times less than carbs do
    
    I would like to know how you would propose to use a carb with any form of boost as they rely on having a good vacum sgnal to pull the fuel up the jets --there is no vacum with boost
    you have to start using pressurised float chambers and things --more problems
    
    I,m old enough to have worked on both and in the days when twin +triple carbs were fitted it was a regular job to recalibrate them --
    used to be a good money maker for the garage
    injection you fit +set up +forget