Need help identifying sled engine sze

[unbeatable1243]

I have a 1971 scorpion stinger 2, that i found in a field and am restoring. The only identification that it has on it, is the name "stinger ii". i've determined its from 1971 by way of the vin, but i am unsure weather it is a 440 or 293 ccw. (i also know that it is a ccw motor) any help would be appreciated.

[oldscorpman]

on a ccw engine the id tag is attached to the cooling fan housing, normally on the exhaust side. there will be a serial number also.

[unbeatable1243]

thank you very much, turns out it is a 400

[unbeatable1243]

I also have a problem, the sled will not pull fuel through the lines, iv rebuilt the carburetor and inspected the rings on the pistons (it has a ton of compression). i'm thinking it could be how i have the fuel lines set up. I found this sled in a field and the lines were rotted away so i had no reference. i cant find a fuel line diagram for this carb anywhere, any help works. (the carb is a tillitson hr98a)

[oldscorpman]

Oct 29, 2018 11:24:10 GMT -5 unbeatable1243 said:

I also have a problem, the sled will not pull fuel through the lines, iv rebuilt the carburetor and inspected the rings on the pistons (it has a ton of compression). i'm thinking it could be how i have the fuel lines set up. I found this sled in a field and the lines were rotted away so i had no reference. i cant find a fuel line diagram for this carb anywhere, any help works. (the carb is a tillitson hr98a)

did you check and replace the lines in the fuel tank? they are known to get brittle and break off in the tank causing to fuel not to pull thru. one line is the pick up in the tank, this line will be about 14'' long with a filter on the end. this line goes into the pump part of your carb. the other line is the return and does not have a long hose in the tank. this gets hooked up to the return nipple on the carb.

rick

[unbeatable1243]

the fuel will suck through from the tank, i know this cause the primer works. but i am a bit confused on your description of the line placement? do you have a picture by any chance?

[unbeatable1243]

so i read your description a couple times more, and understand now what your saying. my pick up line from the tank has to be a bit longer that 14 inches (gas tank is in the very front of sled) also my tank only has one line in it (the pick up line) so i'm not sure where the return goes then. There is a little nipple on the motor, that is for a line, but not sure what line (possible return) a picture would really be helpful. ill try to get one of my own.

[unbeatable1243]

his is before i rebuilt the carb. the line that has all the fittings on it was the line that was going to the tank. the line with the filter was going to the nipple on the engine. (ive also restored everything you see here) from what i understand of what your saying, the line attached to the filter should be the pick up line and the other one should be the return correct. so what is the engine nipple for? The engine nipple is connected to the right cylinder but the left doesn't have one. it just has a bolt in the hole. let me know, anything helps. Thanks

-Parker

[weverat]

ok, it gets tricky because they made those little Tillys a couple different ways.

The gas line from the tank definitely goes to the fuel filter nipple.

Does your carb have another nipple, if so, it is for a return line or a pulse line.

I am guessing in your case it is a pulse line, so connect a short little gas line from that nipple on your engine to the other nipple on the carb. This creates the pulse to make the pump work.

Also, if the sled has been sitting for 10 years, the carb may not work properly until cleaned and tweeked.

Oh ya, like Oldscorpman said, the fuel pick up line inside the gas tank has to be changed, it will be brittle and break off for sure.

[unbeatable1243]

thanks, that is the way iv had it set up for awhile. the tank line that could be brittle is replaced now. and the carb has been rebuilt. I tested it with all the hoses hooked up but it still wont pull the fuel through the lines? any suggestions?

[unbeatable1243]

oh wait it might work i just realized that the line that hooks to the engine is not the right one, ill get back to you with the results when i work on it next. thanks

[unbeatable1243]

so i did what you suggested, and it did pull the fuel, but then pushed it back down. the pulse seams to be pushing the gas right back through the lines when i pull the starter cord. any suggestions