Frequently Asked Questions
What size Lectron carb is correct for my application?
There are many variables but there is a good “rule of thumb”, first measure the size of your intake port (this is where the carb first enters the engine). The size of your port should match the size of your carburetor. ( 38mm port 38mm carburetor) It does not make any sense to have a carb bigger than the intake port. Some engine builders size the carb by the size of the intake valve. If you know your intake valve size let’s say “38mm” then you would want a 38mm carburetor. This method is very good but it gets tricky when you have a 4 valve type engine because you have two intake valves. (You can’t really add them up). Final note when sizing a carburetor for you application Bigger is not necessary always better.
Should I have a power jet carburetor or not?
This is a must for a two stroke engine. We prefer to have them on all types of engines two or four stroke. The power jet carburetor can give you a wider range on tuning and also helps you fine tune top end power.
What is a Lectron High Velocity carburetor?
The standard Lectron carburetor has a 2mm taper. For example a 40mm carburetor will start out 40mm taper down to 38mm at the fuel pick up then taper back up to 40mm. The Lectron High Velocity carburetor has a 4mm taper. For example, a 38mm HV carb will start at 40mm taper down to 36mm at the fuel pickup then back out to a 38mm. This carburetor was first designed for a racing classes that had a restriction on carburetors size. This was Lectron answer to have a small carb work like a big carb. The Lectron High Velocity carb is also used today for bikes that do not have much “port speed”. Engines with a small amount of port speed have trouble picking up fuel efficiently this carburetor corrects that. Final not many people put Lectron High Velocity carburetors on engines not understanding why? Just because the name “High Velocity” they think it is a better carburetor than the standard Lectron, don’t confuse the issue.
Can I convert my “gas” Lectron to an “alcohol” ?
Yes, first you must have a power jet carb to start with. When you are using the carb for a 2 stroke engine you must add an additional power jet. For a 4 stroke this is not necessary. The other modifications are you must change the needle & seat and the metering rod. We highly recommend using a fuel pump, we have found that in an alcohol application gravity feed is not sufficient.