carbureted to fuel injection

killianb2001

Hi,
Im fairly new to biking and for a second motorcycle (as im moving up to an a2 licence) I'm set on an old zxr 400 but they are carbureted. I know it is physically possible to convert a carbureted engine to fuel injection but is it event worth it, very complicated, hard to do for( a mechanic), extremely expensive ect.

Any advice or help would be greatly appreciated.

LookBehindYou

Not worth it.
Just get the bike serviced by someone who know what they are doing.

Max Headroom

Easier to stick a modern lump in , if you want the classic look of the zxr

conor2469

Not worth the hassle. What is your issue with carbs anyway?

zubair

If you want a bike with FI just get one that is already. There's plenty of A2 options, including restricted A bikes, which might make it easier to move on when it's time for your A.

two wheels good

I've only ever seen the opposite conversion; FI to carb, which actually seemed straightforward on a boxer bmw.
I suppose your conversion is possible with access to specialist suppliers probably in the racing world. You'll need inlet manifold, injectors, fuel pump, fuel regulator, O2 sensor - oh and an ECU.
Be sure to take plenty of photos of the project and post them here.

CJhaughey

There is a company called ecotrons that sells complete kits to convert to FI including ecu.
Is it worth it ? I can’t answer that but if are willing to go down that road then I guess it must be worth it to you.
https://www.ecotrons.com/small_engine_fuel_injection_kit/400cc_to_800cc_engine_fuel_injection_kit/

two wheels good

Brilliant! FI-ing a DR650. Now that would be a useful project. Looking fwd to a closer read later.

Seems I forgot: MAF sensor and software to program the thing.

killianb2001

Im on a carbed bike at the moment and its a pain to start on a cold morning and just in general. Id like to just be able to start the bike and go.

killianb2001

CJhaughey wrote: »

There is a company called ecotrons that sells complete kits to convert to FI including ecu.
Is it worth it ? I can’t answer that but if are willing to go down that road then I guess it must be worth it to you.

I dont mind having to pay a good bit for it to have it done or the time it'd take to have done.

CJhaughey

killianb2001 wrote: »

I dont mind having to pay a good bit for it to have it done or the time it'd take to have done.

Its likely there will be a good bit of setup time to get a FI system running from scratch.
Cold start isn't a problem with carbs if everything is in good working order.
Make sure all your ignition system is good, plugs and coils.
Check and makes sure your carbs are clean, Air filter as well.
If everything is good then you should start fine.

Esel

Have you had it looked at by a mechanic?

Are you using the choke correctly?

IrishGrimReaper

I had a similar issue with my Varadero, it was a bitch and constantly needed the choke to get running. It was used daily too.

I bought Seafoam and it made such a difference. I thought it would be a farce but thankfully it worked wonders. The engine started easily and wouldn't really need help from the choke to idle unless it was bitterly cold.

Eventually, I bought a fuel injection bike and I'm glad I did.

two wheels good

As already mentioned a full tune-up and clean the carbs should sort out the starting problem. If the bike was idle for a while the fuel evaporates and the residue gums up the cards. Will be a small fraction of the cost and risk of FI-ing it.

I found this link from a racing specialist. Probably out of date but likely costs - $5000 plus labour.
So many bikes and so little time!

zubair

...Or a new battery, as it's more likely to be the cause of the problem.