A
Anonymous
Guest
Does anyone know if there is an automatic (electric) choke conversion kit available for the 1904 Holley?
Thanks
Gerry
ABQ,NM
Thanks
Gerry
ABQ,NM
MercuryMarc
Well-known member
I just came across this bit of info while researching carbs:
http://www.bob2000.com/carb.htm
"How to hook up electric chokes.
Many Holleys come with electric chokes. I don't like them. This is due to the fact that they cool down faster than necessary when you shut the engine down. Hot air chokes are better, but if you want to use an electric choke, here is what you need to know.
Make sure there is airflow through the choke spring housing. This is the most common error people make, and it ends up burning the bi-metal spring. Holleys draw air through the choke spring housing to keep the spring from overheating. You must make sure that there is a clear path for the carb to draw a little bit of vacuum through the housing (there is a small vacuum passage behind the housing), and that the air gets filtered somehow, either with an external filter, or through a hookup to the bottom of the air filter housing.
You will need a source of 12 volt power to heat up the bi-metal spring. This source must be energized ONLY when the engine is running, so make sure you don't hook up your wire to the accessory circuit. This, again, is how many bi-metal springs get burned up, because there is no airflow through the choke housing when the engine is not running. The hot side of the 12v wire hooks up to one tab on the choke, and the other tab of the choke goes to ground, usually one of the choke housing mount screws. I highly recommend putting a fuse of some sort in the line, because a failure of the bi-metal spring could cause an overload of the wire and a fire if there is no fuse in there somewhere, and typically ignition circuits are not fused."
http://www.bob2000.com/carb.htm
"How to hook up electric chokes.
Many Holleys come with electric chokes. I don't like them. This is due to the fact that they cool down faster than necessary when you shut the engine down. Hot air chokes are better, but if you want to use an electric choke, here is what you need to know.
Make sure there is airflow through the choke spring housing. This is the most common error people make, and it ends up burning the bi-metal spring. Holleys draw air through the choke spring housing to keep the spring from overheating. You must make sure that there is a clear path for the carb to draw a little bit of vacuum through the housing (there is a small vacuum passage behind the housing), and that the air gets filtered somehow, either with an external filter, or through a hookup to the bottom of the air filter housing.
You will need a source of 12 volt power to heat up the bi-metal spring. This source must be energized ONLY when the engine is running, so make sure you don't hook up your wire to the accessory circuit. This, again, is how many bi-metal springs get burned up, because there is no airflow through the choke housing when the engine is not running. The hot side of the 12v wire hooks up to one tab on the choke, and the other tab of the choke goes to ground, usually one of the choke housing mount screws. I highly recommend putting a fuse of some sort in the line, because a failure of the bi-metal spring could cause an overload of the wire and a fire if there is no fuse in there somewhere, and typically ignition circuits are not fused."
A
Anonymous
Guest
Thanks for all the useful info. guys.
MercuryMarc
Well-known member
I changed my water choke to an electric choke (from an online kit) and it works fine. Much easier to change/swap carbs that way since it does not lead to coolant leaking all over the place! That's the only reason why I did it on my HW 5200.
Good Luck!
Good Luck!
