OK
Been reading about this as far as ye olde 1100 motors are concerned. In summary, for my simple mind.
Fuel Injection
For:
Doesnt seem to go wrong very often and leave you stranded
Against:
Bit of a faff to get it running well and keep it running well at low engine speeds, trickling through traffic is often mentioned. Many dealers seem incapable of acheiving this although many independents get things running very sweetly.
Carburettors
For:
Most people who've had the conversion done professionally seem to think that the bike is far better to 'ride' in the real world. I say professionally done as it seems fair to compare it to a professionally installed, ie BMW, fuel injection system.
Against:
Costs the best part of £1k for the parts, installation and set up to do the conversion professionally. Possibility of spares, circuit boards etc not being available in the future.
Now what if the advantages of a Carb set up could be acheived for say £100-200 without having to bin what has proved to be quite a reliable, if basic, fuel injection system with its inherent spares availability?
Thinking a bit further about getting the best of both worlds without the cost, got me wondering about carbs with TPS so that the OE ECU continues to work for timing etc ............. carbs are still going to be expensive though.
Mmmmm........ If you go down the route of using CV carbs, then the airbox needs modifying as well as in its standard form it provides positive air pressure due to the forward motion of the bike. This of course doesnt matter with fuel injection as the ECU takes care of it. ( Altough, as an aside, maybe using a bleed from the airbox to the CV carb would overcome this by eqalising the pressure?)
So, distilling my thoughts of keeping things as close to original as possible (for spares and reliability) but wishing to have the advantage of the smooth power delivery from low revs you get from carbs, all without costing very much ................. and this is where I would appreciate feedback from all the collected wisdom out there ............... I thought this may be worth looking at.
Replace one throttle body ( the one without the TPS) with one 40mm carb ( probably non CV)
The fuel for the carb would need to be sorted, maybe a T off the fuel return, something low pressure anyway.
The means of operating the carb would need to be sorted, maybe use the existing throttle cable.
The necessity of a choke for the carb for cold starting, maybe the fast idle on the remaining throttle body will be enough until the engine warms up.
CMon guys, comments please .............. Have I really lost the plot or might something along these lines actually work?
Been reading about this as far as ye olde 1100 motors are concerned. In summary, for my simple mind.
Fuel Injection
For:
Doesnt seem to go wrong very often and leave you stranded
Against:
Bit of a faff to get it running well and keep it running well at low engine speeds, trickling through traffic is often mentioned. Many dealers seem incapable of acheiving this although many independents get things running very sweetly.
Carburettors
For:
Most people who've had the conversion done professionally seem to think that the bike is far better to 'ride' in the real world. I say professionally done as it seems fair to compare it to a professionally installed, ie BMW, fuel injection system.
Against:
Costs the best part of £1k for the parts, installation and set up to do the conversion professionally. Possibility of spares, circuit boards etc not being available in the future.
Now what if the advantages of a Carb set up could be acheived for say £100-200 without having to bin what has proved to be quite a reliable, if basic, fuel injection system with its inherent spares availability?
Thinking a bit further about getting the best of both worlds without the cost, got me wondering about carbs with TPS so that the OE ECU continues to work for timing etc ............. carbs are still going to be expensive though.
Mmmmm........ If you go down the route of using CV carbs, then the airbox needs modifying as well as in its standard form it provides positive air pressure due to the forward motion of the bike. This of course doesnt matter with fuel injection as the ECU takes care of it. ( Altough, as an aside, maybe using a bleed from the airbox to the CV carb would overcome this by eqalising the pressure?)
So, distilling my thoughts of keeping things as close to original as possible (for spares and reliability) but wishing to have the advantage of the smooth power delivery from low revs you get from carbs, all without costing very much ................. and this is where I would appreciate feedback from all the collected wisdom out there ............... I thought this may be worth looking at.
Replace one throttle body ( the one without the TPS) with one 40mm carb ( probably non CV)
The fuel for the carb would need to be sorted, maybe a T off the fuel return, something low pressure anyway.
The means of operating the carb would need to be sorted, maybe use the existing throttle cable.
The necessity of a choke for the carb for cold starting, maybe the fast idle on the remaining throttle body will be enough until the engine warms up.
CMon guys, comments please .............. Have I really lost the plot or might something along these lines actually work?
