REMOVING INJECTION AND REPLACING WITH STD CARBS

[shrek51]

Has anyone removed the injection and replaced with std carbs if so how and carbs from what and set up
cheers

[richarddacat]

why? :spam:

[pdg]

I'm not sure I see the spam connection, maybe I view spam differently..........

It's been done on (afaik) all the flavours of brick.

How = unbolt injection gubbins and bolt carbs onto a suitable inlet manifold.

From what = a carbureted petrol engine.

Set up = to do it properly you need a dyno, to bodge it just experiment with jets/needles.

You'll need to do some playing with the electrics too.

HTH

[F14CRAZY]

fer wat?

[jacksdad1963]

Of course its possible.....but why?
Pointless exercise to me,  it can be done, but i doubt you'd see any power increase: more like the opposite!

[Elipten]

I would rather see the replacement with a newer more capable computer, sensors and modern fuel injection.  Why step back to the mid 20th century?

[johnny]

i heart spam... its some fine gelatinous pig...

also heart car drive shafts car shocks and car tiors on motobricks... i can see an eight pack rig hanging off there...

j o

[Chaos]

I remember seeing a K75 with a home made manifold and a single SU carb.  Looked pretty wonky, but it ran.  Also seen turbo conversions with a carb, that makes more sense.

[racinrich]

why not buy a Harley if you want to play with carbs  :hehehe

[K75RT Keith]

Luftmiester had a kit that put carbs on a brick.  But why would you want to?. If you want to play with carbs and spend a bunch of time adjusting them, go buy a CB900.  After about 20 miles you'll be dialing them back in. BTDT.

[bocutter Ed]

why not buy a Harley if you want to play with carbs  :hehehe

Strangely ... one of the 'lunch brothers' on a woodworking forum I frequent, converted his Harley, I think a Y2K er, from fuel injection back to carbs. He's happy with it so who am I to argue.

[jacksdad1963]

But you are overlooking one major point:
The Harley is an old tractor engine....and the BMW is a super-finely tuned piece of Internal Combustion Engine Wizardly-ness!  :hehehe

[wmax351]

Carbs would be tricky to set up on the K. The reason why the factory went with fuel injection is partially that it was easier to make work well than carbs. You would either need 3/4 very small form factor, but still large throated downdraft carbs, or you would need a complicated and heavy manifold and manifold heating system, paired with either a single carb (which saps low end throttle response in order to have good performance at higher rpm) or to have 3 sidedraft carbs in a very non-ideal configuration.


The L-jetronic is bulletproof. Just keep it on there.


I updated my fuel injection system to a megasquirt, a modern system, and went back to the Jetronic. It works plenty well, and is absolutely reliable.

[F14CRAZY]

If you could come up with a Megasquirt system using an oxygen sensor, a MAF or MAP sensor, then you'd be all set. But then again I don't see any issues with L-Jetronic that make it worth messing with. What I'd rather have is an extra gear

[wmax351]

If you could come up with a Megasquirt system using an oxygen sensor, a MAF or MAP sensor, then you'd be all set. But then again I don't see any issues with L-Jetronic that make it worth messing with. What I'd rather have is an extra gear

I had it with a wideband O2 sensor and a MAP/TPS blended tuning system. Having just ridden it back in stock config for the first time today, the only advantage of the Megasquirt was better low end throttle response.

[Cafe racer]

I saw it done by a bike mechanic he rejetted suzuki bandit 400cc carbs al,ost plug and play, the owner of the K said it had never run as good after the conversion...