3000W Chinese Gensets Info.
professor95 wrote: EDIT ADDED 45/5/2013- When this thread started in March of 2005, I never expected to see it survive this long or amass the quantity of information that has been shared here. In...
Forum Discussion
olephart wrote:
Say Professor, I'm collecting parts for a propane conversion of my 3000W Champion. Could you confirm a few things? I'll be following your excellent instructions.
1. A 1/4" O.D. Copper tube with a 3/16" I.D is recommended for the feed.
2. A $10 BBQ pit regulator that outputs 11" w.c (about 1/2 pound) will feed the Garretson KN 039-122 correctly.
3. Will the feed tube used on the Champion work on a 8 HP Briggs?
Not sure which feed you are referring to on #1. If it is the feed that goes up through a drilled main jet the answer is yes. But the hose to that piece needs to be larger (see #3).
#2 sounds good. Pressure to the Garretson should be no more than 4 psi.
#3 Back to #1. If the feed tube is the actual carburetor tube you should be OK. The major piece is the load block with the adjustment screw. In all of my successful projects it needed to be bigger - The feed hose from the Garretson to the load block and then to the engine needs to be between 5/16 to 1/2" ID depending on engine size and length of the tube. For an 8 h.p with over 12" of hose I would suggest a minimum of 3/8" ID. At the end of this hose transition to a fiting with a larger OD and the 1/4" ID - something like a barbed or screw-in air hose fitting. Remember - High volume, low pressure, after the Garretson. The photo below is LPG certified hose 13" long from the load block to the fed tube with an inside diameter of 5/16" as used on a 200 cc engine. This is an example of the smallest sizing and length that will work.
How did an 8 hp Briggs sneak in here? Anyway, go by engine displacement, not HP, for sizing. Better to have a hose too big than too small. Also, this set up works best for engines run at a constant speed - like generator engines.
