As soon as i got off school i headed home, and parked the Caddy in the garage. Started out looking like this:
First thing there was on the list to do was get the cooling system all squared away. I was hoping that all i was going to have to do was put the hose I made on and call it good. Sadly... it was more complicated than that. When i went to test fit the carbs, the radiator and fan position didnt allow enough clearance.
What i had to end up doing was angle the radiator so that on the carburetor side it was hiding under the rad support. I also had to take off me pancake fans and go back to the single fan from my 77 rabbit. Once i got all of this done it was about three in the morning, and i called it a night.
New hose on, before i had test fitted the carbs and realized that the current set up wouldnt work:
First test fitting of the carbs, filters had to be squished to go in there and were touching one of the fans:
Lightbulb turned on in my head when i realized i could angle the rad:
Cooling system complete:
First thing i did was run the fuel lines. I ended up having to run them a different way because i didnt realize the pressure regulator wasnt a bypass regulator. If you are going to be doing this swap and using the stock CIS fuel pump, get a BYPASS REGULATOR. I was able to use my curent one temporarily, till i can save up for a bypass regulator. Ill take pictures and explain it tomorrow.
The reason i ran the fuel lines in the way pictured, on the driver side of the engine compartment, was so that if i couldnt get the carbs going i could just plug my CIS back in. This car is my daily so i had to make sure one way or the other i could drive it to school monday. Now that the carbs work, ill plum the fuel lines on the passenger side so that the engine compartment will be cleaner.
The fuel filter should be before the regulator but i wanted to be sure that nothing was coming from any of my plumbing.
Also check out the oil dipstick... To be able to get to it with the carbs on a had to bend the guide tube. I just did it carefully by hand.
First time i ran the fuel lines:
Next it was time to bolt on the manifold. I must say i did a pretty nice job on it, it bolted right up:
Notice I used a bit of foam air filter material to shove in to all of the vents on the carbs so that nothing but air can get in. First fitment of the carbs:
It was finally time to fire it up! I let the lines fill up with fuel by making the pump cycle a couple times, then turned the choke on... Vrooommmm! Fired right up! I let it warm up for a minute and then turned the choke off, but the engine died. My thought process was that choke richens the fuel mixture and the engine will only run with it on, so i enrichened the idle mixture screws and it fired right up with choke off. Be sure that when your adjusting idle mixture screws only go in small amounts and go the same amount on every carb. After i did this the engine was smoking a little so i leaned out the mixture till it didnt smoke any more.
Then for the first drive It drove great for a while then it would die. As soon as i would let the fuel pump cycle a couple times it would start right back up, drive for a while, and then die again. The issue was that i wasnt getting anough fuel pressure to the carbs and the float bowls were drying up faster than they could be refilled. The cause of the problem was my non return regulator. Which is why i suggest that you USE A BYPASS REGULATOR if you are going to be using the CIS pump. Like i said, i was able to temporarily fix my problem, but will be switching to a bypass regulator. As soon as i did the fix, the engine runs smoothly all of the time. Mission accomplished!
Final result: My car runs properly now. No fluctuating idle, no cranking for thirty seconds before it starts, and it sounds beautiful I am VERY happy with the result. It all seemed a little too easy!
There are a couple more posts still to come:
Throttle and choke cable explaination.
MPG's and thoughts on furter jetting.
Synching the carbs.
PROPER plumbing of fuel lines.
I think thats it...
If anyone has any questions about running these carbs i am happy to help! Bike carbs CAN be run successfully!
Modified by Miami Blue at 10:27 PM 1-3-2010