Resend my activation email : Register : Log in 
BCF: Bike Chat Forums


whats the difference between fuel injection, and a carb

Reply to topic
Bike Chat Forums Index -> General Bike Chat
View previous topic : View next topic  
Author Message

RooRoo
Anal Intruder



Joined: 04 May 2004
Karma :

PostPosted: 14:59 - 10 Jun 2004    Post subject: whats the difference between fuel injection, and a carb Reply with quote

just wondering, it seems newer bikes have fuel injection, im guessing my rs will have a carb though?
 Back to top
View user's profile Send private message You must be logged in to rate posts

Mr Pants!
I Karma



Joined: 29 May 2004
Karma :

PostPosted: 15:01 - 10 Jun 2004    Post subject: Reply with quote

Carb = https://auto.howstuffworks.com/question377.htm

Injection = https://auto.howstuffworks.com/fuel-injection.htm

Cool
____________________
Mr Pants! (Alex or Al)
Its better to burn out, than to fade away....
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

mr.z
World Chat Champion



Joined: 04 Feb 2004
Karma :

PostPosted: 15:12 - 10 Jun 2004    Post subject: Reply with quote

Carbs - meer mortals can fix

Fi - You need a big pile of expensive diognostic equipment and a degree in neuclear physics

Generally i think fi is allot more efficient (and therefore powerfull) but can make powerdelivery in some cases very slightly delayed or jumpy..

Have a good read though those links there some really interesting things on there, epsecially the 2/4 stroke engine differences, brakes and clutches lots of stuff.. all very handy to know Thumbs Up
____________________
>RidingSkills<->Tech Tips<->MyBikes<
 Back to top
View user's profile Send private message Visit poster's website You must be logged in to rate posts

T.C
World Chat Champion



Joined: 05 Nov 2003
Karma :

PostPosted: 15:26 - 10 Jun 2004    Post subject: Reply with quote

Fuel injected bikes pass the emission controls and tests a lot easier than carbs, and it also means more money to the dealers when it goes wrong as most of us don't have the equipment for doing the diagnostics, whereas with a set of carbs they are dead easy to rip apart and repair.
____________________
It is better to arrive 30 seconds late in this world, than 30 years early in the next
 Back to top
View user's profile Send private message Send e-mail Visit poster's website You must be logged in to rate posts

Dr Nick
World Chat Champion



Joined: 20 Jun 2003
Karma :

PostPosted: 15:35 - 10 Jun 2004    Post subject: Reply with quote

It was on tele sometime, that Carbs actually deliver the mixture smoother to the engine than fi. Can't remember the whole thing but something about how the slide is the perfect shape or something. Confused
____________________
is that it
 Back to top
View user's profile Send private message Send e-mail Visit poster's website You must be logged in to rate posts

Visitor Q
$25 whore



Joined: 30 Apr 2004
Karma :

PostPosted: 17:06 - 10 Jun 2004    Post subject: Reply with quote

T.C wrote:
whereas with a set of carbs they are dead easy to rip apart and repair.


Fancy fixing mine then? Wont idle worth shite, runs rich (i think) and stalls (with clutch in) when i stop suddenly.

Bring on the fuel injection Sad
____________________
China traffic/travel bike vid - When I make a sweeping statement, please add the word 'statistically' in to the sentence before you bitch...
From September 2014 to January/February 2015 I will not be using any English, nor reading any. As such, I won't be on here. PM at will, but I won't be checking/posting unless in emergencies. Certainly not for the first couple of months. Please berate me savagely if I break that rule...
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

Kickstart
The Oracle



Joined: 04 Feb 2002
Karma :

PostPosted: 17:08 - 10 Jun 2004    Post subject: Reply with quote

Hi

Fuel injection is simpler than carbs really. Easier to design, but harder for someone to debug without the correct equipment.

No reason a fuel injected engine should not be as smooth as a carbed one. Trouble is that fuel injection is often added to get round emisions rules and that means pulling various tricks. For example on a closed throttle from higher revs a carb will still flow some fuel to the engine, and this will result in a smoother transition to an open throttle. However an injected engine will often cut the fuel totally while the throttle is closed, saving fuel and reducing emisions but making the power come in with a bit of a jerk when you open the throttle again.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

mr.z
World Chat Champion



Joined: 04 Feb 2004
Karma :

PostPosted: 17:14 - 10 Jun 2004    Post subject: Reply with quote

Quote:

Fancy fixing mine then?


Get yourself a vacum guage, carb adjusting tool and a manual then do it yerself! its nowhere near as difficult as you'd think..

The problem with fi bikes/cars they rely on sensors, O2 sensors and all sorts, they are expensive, if any of them are broken you need the diognostic stuff to know which one is out. Sad
____________________
>RidingSkills<->Tech Tips<->MyBikes<
 Back to top
View user's profile Send private message Visit poster's website You must be logged in to rate posts

Ninja
Caption Abuser



Joined: 22 Apr 2004
Karma :

PostPosted: 17:21 - 10 Jun 2004    Post subject: Reply with quote

Injection - being electronically controlled, can be mapped to give the optimum fuelling for any given load or engine speed range

Carbs - 'fixed' in their ability to deliver fuel for given rev ranges
____________________
James
4 wheels transport the Body ... 2 wheels transport the SOUL
 Back to top
View user's profile Send private message You must be logged in to rate posts

mr.z
World Chat Champion



Joined: 04 Feb 2004
Karma :

PostPosted: 17:34 - 10 Jun 2004    Post subject: Reply with quote

Kickstart wrote:
However an injected engine will often cut the fuel totally while the throttle is closed, saving fuel and reducing emisions but making the power come in with a bit of a jerk when you open the throttle again.

Keith


Ah, that explains allot, so haveing the ecu remaped would cure these "quirks" but perhaps have you failing an mot on emissions?
____________________
>RidingSkills<->Tech Tips<->MyBikes<
 Back to top
View user's profile Send private message Visit poster's website You must be logged in to rate posts

Claud 14.7 to 1
World Chat Champion



Joined: 06 May 2004
Karma :

PostPosted: 17:49 - 10 Jun 2004    Post subject: Reply with quote

Quote:
Ah, that explains allot, so haveing the ecu remaped would cure these "quirks" but perhaps have you failing an mot on emissions?


True. some aftermarket ecus you can switch between fuel maps, ie one for mot, one for road fuel, one for race fuel, all giving optimum fueling for each senario. ignition timing can also be "mapped" but thats another story.

i though fi rule, and carbs suck, but some points raised about carb are quite vaild.

still rather have fi though, cant get blocked,doesnt need adjustment, more accurate, etc etc etc.
 Back to top
View user's profile Send private message You must be logged in to rate posts

Kickstart
The Oracle



Joined: 04 Feb 2002
Karma :

PostPosted: 18:47 - 10 Jun 2004    Post subject: Reply with quote

zero wrote:
Ah, that explains allot, so haveing the ecu remaped would cure these "quirks" but perhaps have you failing an mot on emissions?


Yes it can help, but the chances are that you will probably still pass an MOT in the UK (the UK MOT test uses a very simple and basic emisions test).

A fairly true saying about fuel systems used on the road is "Fuel injection gives an engine what it needs, carbs give it what it wants".

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

hugo-a-gogo
Trackday Trickster



Joined: 13 Feb 2004
Karma :

PostPosted: 21:25 - 10 Jun 2004    Post subject: Reply with quote

most of this applies to modern computer-controlled fuel injection, FI is just easier to make computer controlled
____________________
"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them - but I want one anyway, and on some days I actually believe I need one. That is why they are dangerous."
Hunter S Thompson
clicky 4 bikey
 Back to top
View user's profile Send private message You must be logged in to rate posts

WildGoose
White Van Man



Joined: 20 Mar 2002
Karma :

PostPosted: 22:06 - 10 Jun 2004    Post subject: Reply with quote

i like carbs, cos i understand the principle, and technically you can see the mechanics of whats happening

anything electronic that replaces anything mechanical is no friend of mine as far as mainteance goes

electronics makes me feel stupid if i'm honest, cos most of the time i find it a head fuck
____________________
So in other words, he stopped you for being flagrantly in posession of a motorcycle in direct contravention of the Hippies, Darkies and People Whose Face I Don't Like The Look of (Police Powers) Act. 1976
 Back to top
View user's profile Send private message You must be logged in to rate posts

mr jamez
World Chat Champion



Joined: 04 Aug 2003
Karma :

PostPosted: 22:09 - 10 Jun 2004    Post subject: Reply with quote

I like tinkering and you can do that with carbs, the less electronics the better.
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

loply
World Chat Champion



Joined: 24 Mar 2004
Karma :

PostPosted: 21:25 - 11 Jun 2004    Post subject: Reply with quote

Personally with a background in programming I find EFI completely natural, and I much prefer the option of being able to simply type in a number to set injection options for some particular RPM, rather then the dark art of messing with the various parts of carbs.

Tools for reprogramming EFI arent that much really - Not much more than the tools + books youll need to learn carbs. And you can change EFI at will, no need to buy new jets all the time.

Depends which way youre inclined though, I suppose.
 Back to top
View user's profile Send private message You must be logged in to rate posts
Old Thread Alert!

The last post was made 21 years, 205 days ago. Instead of replying here, would creating a new thread be more useful?
  Display posts from previous:   
This page may contain affiliate links, which means we may earn a small commission if a visitor clicks through and makes a purchase. By clicking on an affiliate link, you accept that third-party cookies will be set.

Post new topic   Reply to topic    Bike Chat Forums Index -> General Bike Chat All times are GMT
Page 1 of 1

 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

Read the Terms of Use! - Powered by phpBB © phpBB Group
 

Debug Mode: ON - Server: birks (www) - Page Generation Time: 0.06 Sec - Server Load: 0.73 - MySQL Queries: 14 - Page Size: 93.65 Kb